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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q



|x | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ---------------------------------------------------------------------------------------

For the quarterly period ended March 31, 2006

OR



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

Commission File Number: 1-10982

Cross Timbers Royalty Trust

(Exact name of registrant as specified in its charter)



|                                                               |  |                                     
|-------------------------------------------------------------- |  | ------------------------------------
|Texas                                                          |  | 75-6415930                          
|(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)



|                                                      |  |           
|----------------------------------------------------- |  | ----------
|Bank of America, N.A., P.O. Box 830650, Dallas, Texas |  | 75283-0650
|(Address of principal executive offices)              |  | (Zip Code)

(877) 228-5084

(Registrants telephone number, including area code)

NONE

(Former name, former address and former fiscal year, if change since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter
period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x    No ̈

Indicate by check mark whether the registrant is a large accelerated filer, an
accelerated filer, or a non-accelerated filer. See definition of accelerated filer and large accelerated filer in Rule 12b-2 of the Exchange Act. (Check one):

Large accelerated filer ̈Accelerated filer x
    Non-accelerated filer ̈

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ̈No x

Indicate the number of units of beneficial interest outstanding, as of the latest
practicable date:

Outstanding as of April 1, 2006

6,000,000



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CROSS TIMBERS ROYALTY TRUST

FORM 10-Q FOR THE QUARTERLY PERIOD ENDED MARCH 31, 2006

TABLE OF CONTENTS



|         |  |                                                                                                      |  |     
|-------- |  | ---------------------------------------------------------------------------------------------------- |  | ----
|         |  |                                                                                                      |  | Page
|         |  | Glossary of Terms                                                                                    |  | 3   
|         |  |                                                                                                     
|PART I.  |  | FINANCIAL INFORMATION                                                                                |  |     
|         |  |                                                                                                     
|Item 1.  |  | Financial Statements                                                                                 |  | 4   
|         |  |                                                                                                     
|         |  | Report of Independent Registered Public Accounting Firm                                              |  | 5   
|         |  |                                                                                                     
|         |  | Condensed Statements of Assets, Liabilities and Trust Corpus at March 31, 2006 and December 31, 2005 |  | 6   
|         |  |                                                                                                     
|         |  | Condensed Statements of Distributable Income for the Three Months Ended March 31, 2006 and 2005      |  | 7   
|         |  |                                                                                                     
|         |  | Condensed Statements of Changes in Trust Corpus for the Three Months Ended March 31, 2006 and 2005   |  | 8   
|         |  |                                                                                                     
|         |  | Notes to Condensed Financial Statements                                                              |  | 9   
|         |  |                                                                                                     
|Item 2.  |  | Trustees Discussion and Analysis                                                                    |  | 11  
|         |  |                                                                                                     
|Item 3.  |  | Quantitative and Qualitative Disclosures about Market Risk                                           |  | 15  
|         |  |                                                                                                     
|Item 4.  |  | Controls and Procedures                                                                              |  | 15  
|         |  |                                                                                                     
|PART II. |  | OTHER INFORMATION                                                                                    |  |     
|         |  |                                                                                                     
|Item 1A. |  | Risk Factors                                                                                         |  | 16  
|         |  |                                                                                                     
|Item 6.  |  | Exhibits                                                                                             |  | 16  
|         |  |                                                                                                     
|         |  | Signatures                                                                                           |  | 17  



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CROSS TIMBERS ROYALTY TRUST

GLOSSARY OF TERMS

The following are definitions of significant terms used in this Form 10-Q:



|                                                   |  |                                                                                                                                                                                                                                                                                                                                                
|-------------------------------------------------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Bbl                                                |  | Barrel (of oil)                                                                                                                                                                                                                                                                                                                                
|                                                   | 
|Mcf                                                |  | Thousand cubic feet (of natural gas)                                                                                                                                                                                                                                                                                                           
|                                                   | 
|MMBtu                                              |  | One million British Thermal Units, a common energy measurement                                                                                                                                                                                                                                                                                 
|                                                   | 
|net proceeds                                       |  | Gross proceeds received by XTO Energy from sale of production from the underlying properties, less applicable costs, as defined in the net profits interest conveyances                                                                                                                                                                        
|                                                   | 
|net profits income                                 |  | Net proceeds multiplied by the applicable net profits percentage of 75% or 90%, which is paid to the trust by XTO Energy. Net profits income is referred to as royalty
income for income tax purposes.                                                                                                                                     
|                                                   | 
|net profits interest                               |  | An interest in an oil and gas property measured by net profits from the sale of production, rather than a specific portion of production. The following defined net profits interests were
conveyed to the trust from the underlying properties:                                                                                               
|                                                   | 
|                                                   |  | 90% net profits interests interests that entitle the trust to receive 90% of the net proceeds from the underlying properties that are royalty or overriding royalty interests in
Texas, Oklahoma and New Mexico                                                                                                                               
|                                                   | 
|                                                   |  | 75% net profits interests  interests that entitle the trust to receive 75% of the net proceeds from the underlying properties that are working interests in Texas and
Oklahoma                                                                                                                                                                
|                                                   | 
|royalty interest (and overriding royalty interest) |  | A nonoperating interest in an oil and gas property that provides the owner a specified share of production without any production expense or development costs                                                                                                                                                                                 
|                                                   | 
|underlying properties                              |  | XTO Energys interest in certain oil and gas properties from which the net profits interests were conveyed. The underlying properties include royalty and overriding royalty interests in
producing and nonproducing properties in Texas, Oklahoma and New Mexico, and working interests in producing properties located in Texas and Oklahoma.
|                                                   | 
|working interest                                   |  | An operating interest in an oil and gas property that provides the owner a specified share of production that is subject to all production expense and development costs                                                                                                                                                                       



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CROSS TIMBERS ROYALTY TRUST

PART I - FINANCIAL INFORMATION



|Item 1. | Financial Statements.
|------- | ---------------------

The condensed financial statements
included herein are presented, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in annual financial statements have been condensed or
omitted pursuant to such rules and regulations, although the trustee believes that the disclosures are adequate to make the information presented not misleading. These condensed financial statements should be read in conjunction with the financial
statements and the notes thereto included in the trusts latest Annual Report on Form 10-K. In the opinion of the trustee, all adjustments, consisting only of normal recurring adjustments, necessary to present fairly the assets, liabilities and
trust corpus of the Cross Timbers Royalty Trust at March 31, 2006, and the distributable income and changes in trust corpus for the three-month periods ended March 31, 2006 and 2005, have been included. Distributable income for such
interim periods is not necessarily indicative of distributable income for the full year.



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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Bank of America, N.A., as Trustee

for the Cross Timbers Royalty Trust:

We have reviewed the accompanying condensed statement of assets, liabilities and trust corpus of the Cross Timbers Royalty Trust as of March 31, 2006 and the related condensed statements of distributable income
and changes in trust corpus for the three-month periods ended March 31, 2006 and 2005. These condensed financial statements are the responsibility of the trustee.

We conducted our review in accordance with standards established by the Public Company Accounting Oversight Board (United States). A review of interim financial information consists principally of applying analytical
procedures to financial data and making inquiries of persons responsible for financial and accounting matters. It is substantially less in scope than an audit conducted in accordance with the standards of the Public Company Accounting Oversight
Board (United States), the objective of which is the expression of an opinion regarding the financial statements taken as a whole. Accordingly, we do not express such an opinion.

The accompanying condensed financial statements are prepared on a modified cash basis as described in Note 1 which is a comprehensive basis of accounting other than accounting principles generally accepted in the
United States of America.

Based on our review, we are not aware of any material modifications that should be made to the condensed financial statements
referred to above for them to be in conformity with the basis of accounting described in Note 1.

We have previously audited, in accordance with the
standards of the Public Company Accounting Oversight Board (United States), the statement of assets, liabilities and trust corpus of the Cross Timbers Royalty Trust as of December 31, 2005, and the related statements of distributable income and
changes in trust corpus for the year then ended (not presented herein), included in the trusts 2005 Annual Report on Form 10-K, and in our report dated March 16, 2006, we expressed an unqualified opinion on those financial statements. In
our opinion, the information set forth in the accompanying condensed statement of assets, liabilities and trust corpus as of December 31, 2005 is fairly stated, in all material respects, in relation to the statement of assets, liabilities and
trust corpus included in the trusts 2005 Annual Report on Form 10-K from which it has been derived.

KPMG LLP

Dallas, Texas

April 28, 2006



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CROSS TIMBERS ROYALTY TRUST

Condensed Statements of Assets, Liabilities and Trust Corpus



|                                                                                 |  |               |            |                  |   |           
|-------------------------------------------------------------------------------- |  | ------------- | ---------- | ---------------- | - | ----------
|                                                                                 |  | March 31,2006 |            | December 31,2005
|                                                                                 |  | (Unaudited)   |            |                 
|ASSETS                                                                           |  |               |            |                  |   |           
|Cash and short-term investments                                                  |  | $             | 2,398,638  |                  | $ | 2,111,521 
|Interest to be received                                                          |  |               | 3,708      |                  |   | 2,489     
|Net profits interests in oil and gas properties - net (Note 1)                   |  |               | 20,778,749 |                  |   | 21,204,723
|                                                                                 |  |               |            |                  |   |           
|                                                                                 |  | $             | 23,181,095 |                  | $ | 23,318,733
|                                                                                 |  |               |            |                  |   |           
|LIABILITIES AND TRUST CORPUS                                                     |  |               |            |                  |   |           
|Distribution payable to unitholders                                              |  | $             | 2,402,346  |                  | $ | 2,114,010 
|Trust corpus (6,000,000 units of beneficial interest authorized and outstanding) |  |               | 20,778,749 |                  |   | 21,204,723
|                                                                                 |  |               |            |                  |   |           
|                                                                                 |  | $             | 23,181,095 |                  | $ | 23,318,733
|                                                                                 |  |               |            |                  |   |           

The accompanying notes to condensed financial statements are an integral part of these statements.



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CROSS TIMBERS ROYALTY TRUST

Condensed Statements of Distributable Income(Unaudited)



|                                                |  |                            |           |      |   |          
|----------------------------------------------- |  | -------------------------- | --------- | ---- | - | ---------
|                                                |  | Three Months EndedMarch 31
|                                                |  | 2006                       |           | 2005
|Net profits income                              |  | $                          | 7,149,251 |      | $ | 4,462,096
|Interest income                                 |  |                            | 15,282    |      |   | 3,519    
|                                                |  |                            |           |      |   |          
|Total income                                    |  |                            | 7,164,533 |      |   | 4,465,615
|Administration expense                          |  |                            | 112,781   |      |   | 125,071  
|                                                |  |                            |           |      |   |          
|Distributable income                            |  | $                          | 7,051,752 |      | $ | 4,340,544
|                                                |  |                            |           |      |   |          
|Distributable income per unit (6,000,000 units) |  | $                          | 1.175292  |      | $ | 0.723424 
|                                                |  |                            |           |      |   |          

The accompanying notes to condensed financial statements are an integral part of these statements.



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CROSS TIMBERS ROYALTY TRUST

Condensed Statements of Changes in Trust Corpus(Unaudited)



|                                      |  |                            |            |   |      |   |            |  
|------------------------------------- |  | -------------------------- | ---------- | - | ---- | - | ---------- | -
|                                      |  | Three Months EndedMarch 31 |           
|                                      |  | 2006                       |            |   | 2005 |  
|Trust corpus, beginning of period     |  | $                          | 21,204,723 |   |      | $ | 22,847,694 |  
|Amortization of net profits interests |  |                            | (425,974   | ) |      |   | (436,676   | )
|Distributable income                  |  |                            | 7,051,752  |   |      |   | 4,340,544  |  
|Distributions declared                |  |                            | (7,051,752 | ) |      |   | (4,340,544 | )
|                                      |  |                            |            |   |      |   |            |  
|Trust corpus, end of period           |  | $                          | 20,778,749 |   |      | $ | 22,411,018 |  
|                                      |  |                            |            |   |      |   |            |  

The accompanying notes to condensed financial statements are an integral part of these statements.



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CROSS TIMBERS ROYALTY TRUST

Notes to Condensed Financial Statements(Unaudited)



|1. | Basis of Accounting
|-- | -------------------

The financial statements of
Cross Timbers Royalty Trust are prepared on the following basis and are not intended to present financial position and results of operations in conformity with U.S. generally accepted accounting principles (GAAP):



| |  |  | Net profits income recorded for a month is the amount computed and paid by XTO Energy Inc., the owner of the underlying properties, to Bank of America, N.A., as trustee for the
trust. Net profits income consists of net proceeds received by XTO Energy from the underlying properties in the prior month, multiplied by net profit percentages of 90% for the 90% net profits interests, and 75% for the 75% net profits interests.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Costs deducted in the calculation of net proceeds for the 90% net profits interests generally include applicable taxes,
transportation, marketing and legal costs, and do not include production expense or development costs. For the 75% net profits interests, costs deducted in the calculation of net proceeds include production expense, development costs, applicable
taxes, transportation, marketing and legal costs, operating charges and other costs.



| |  |  | Net profits income is computed separately for each of five conveyances under which the net profits interests were conveyed to the trust. If monthly costs exceed revenues for any
conveyance, such excess costs must be recovered, with accrued interest, from future net proceeds of that conveyance and cannot reduce net proceeds from the other conveyances.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Interest income, interest to be received and distribution payable to unitholders include interest to be earned from the monthly record date (last business day of the month) through
the date of the next distribution to unitholders.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Trust expenses are recorded based on liabilities paid and cash reserves established by the trustee for liabilities and contingencies.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Distributions to unitholders are recorded when declared by the trustee.
| | - |  | -----------------------------------------------------------------------

The financial statements of the trust differ from those prepared in conformity with U.S. GAAP because revenues are recognized when received rather than accrued in the month of production, expenses are recognized when
paid rather than when incurred, and certain cash reserves may be established for contingencies which would not be accrued under U.S. GAAP. This comprehensive basis of accounting other than U.S. GAAP corresponds to the accounting permitted for
royalty trusts by the U.S. Securities and Exchange Commission, as specified by Staff Accounting Bulletin Topic 12:E, Financial Statements of Royalty Trusts.

Most accounting pronouncements apply to entities whose financial statements are prepared in accordance with U.S. GAAP, directing such entities to accrue or defer revenues and expenses in a period other than when such
revenues were received or expenses were paid. Because the trusts financial statements are



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prepared on the modified cash basis, as described above, most accounting pronouncements are not applicable to the trusts financial statements.

The initial carrying value of the net profits interests of $61,100,449 represents XTO Energys historical net book value on
February 12, 1991, the creation date of the trust. Amortization of the net profits interests is calculated on a unit-of-production basis and is charged directly to trust corpus. Accumulated amortization was $40,321,700 as of March 31, 2006
and $39,895,726 as of December 31, 2005.



|2. | Contingencies
|-- | -------------

Several states have enacted
legislation to require state income tax withholding from nonresident recipients of oil and gas proceeds. After consultation with its state tax counsel, XTO Energy has advised the trustee that it believes the trust is not subject to these withholding
requirements. However, regulations are subject to change by the various states, which could change this conclusion. Should the trust be required to withhold state taxes, distributions to the unitholders would be reduced by the required amount,
subject to the unitholders right to file a state tax return to claim any refund due.



|3. | XTO Energy Inc.
|-- | ---------------

In January 2006, XTO Energy
announced that it will consider selling the underlying properties. Any sale is dependent upon XTO Energys ability to structure a tax-efficient transaction and receive sufficient consideration from a buyer it deems to be qualified.



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|Item 2. | Trustees Discussion and Analysis.
|------- | ----------------------------------

The following
discussion should be read in conjunction with the trustees discussion and analysis contained in the trusts 2005 annual report, as well as the condensed financial statements and notes thereto included in this quarterly report on Form
10-Q. The trusts Annual Report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K and all amendments to those reports are available on the trusts web site at www.crosstimberstrust.com.

Distributable Income

For the quarter ended March 31, 2006, net
profits income was $7,149,251 compared to $4,462,096 for first quarter 2005. This 60% increase in net profits income is the result of higher oil and gas prices and increased gas sales volumes. See Net Profits Income below.

After considering interest income of $15,282 and administration expense of $112,781, distributable income for the quarter ended March 31, 2006 was $7,051,752, or
$1.175292 per unit of beneficial interest. Administration expense for the quarter decreased 10% from the prior year quarter primarily because of the timing of expenditures related to the 2004 audit of the trusts internal control over financial
reporting. For first quarter 2005, distributable income was $4,340,544, or $0.723424 per unit. Distributions to unitholders for the quarter ended March 31, 2006 were:



|                  |  |                   |  |                      |         
|----------------- |  | ----------------- |  | -------------------- | --------
|Record Date       |  | Payment Date      |  | Distributionper Unit
|January 31, 2006  |  | February 14, 2006 |  | $                    | 0.397109
|February 28, 2006 |  | March 14, 2006    |  |                      | 0.377792
|March 31, 2006    |  | April 14, 2006    |  |                      | 0.400391
|                  |  |                   |  |                      |         
|                  |  |                   |  | $                    | 1.175292
|                  |  |                   |  |                      |         

Net Profits Income

Net profits income is recorded when received by the trust, which is the month following receipt by XTO Energy, and generally two months after oil production and three months after gas production. Net profits income is generally affected by
three major factors:



| |  |  | oil and gas sales volumes,
| | - |  | --------------------------



| |  |  | oil and gas sales prices, and
| | - |  | -----------------------------



| |  |  | costs deducted in the calculation of net profits income.
| | - |  | --------------------------------------------------------

Because
properties underlying the 90% net profits interests are royalty and overriding royalty interests, they generally bear no costs other than production and property taxes, related legal costs, and marketing and transportation charges. In addition to
these costs, the 75% net profits interests are subject to production expense and development costs, since the properties underlying the 75% net profits interests are working interests.



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The following is a summary of the calculation of net profits income received by the trust:



|                                |  |                               |  |                     |  |     
|------------------------------- |  | ----------------------------- |  | ------------------- |  | ----
|                                |  | Three MonthsEnded March 31(a) |  | Increase (Decrease)
|                                |  | 2006                          |  | 2005                | 
|Sales Volumes                   |  |                               |  |                     |  |     
|Oil (Bbls) (b)                  |  |                               |  |                     |  |     
|Underlying properties           |  | 68,822                        |  | 68,446              |  | 1%  
|Average per day                 |  | 748                           |  | 744                 |  | 1%  
|Net profits interests           |  | 32,708                        |  | 35,671              |  | (8%)
|Gas (Mcf) (b)                   |  |                               |  |                     |  |     
|Underlying properties           |  | 797,891                       |  | 604,843             |  | 32% 
|Average per day                 |  | 8,673                         |  | 6,574               |  | 32% 
|Net profits interests           |  | 692,084                       |  | 525,520             |  | 32% 
|Average Sales Prices            |  |                               |  |                     |  |     
|Oil (per Bbl)                   |  | $54.78                        |  | $42.25              |  | 30% 
|Gas (per Mcf)                   |  | $9.29                         |  | $6.96               |  | 33% 
|Revenues                        |  |                               |  |                     |  |     
|Oil sales                       |  | $3,770,355                    |  | $2,891,581          |  | 30% 
|Gas sales                       |  | 7,412,845                     |  | 4,207,937           |  | 76% 
|                                |  |                               |  |                     |  |     
|Total Revenues                  |  | 11,183,200                    |  | 7,099,518           |  | 58% 
|                                |  |                               |  |                     |  |     
|Costs                           |  |                               |  |                     |  |     
|Taxes, transportation and other |  | 1,707,099                     |  | 959,712             |  | 78% 
|Production expense (c)          |  | 1,058,352                     |  | 868,927             |  | 22% 
|Development costs               |  | 259,679                       |  | 100,822             |  | 158%
|                                |  |                               |  |                     |  |     
|Total Costs                     |  | 3,025,130                     |  | 1,929,461           |  | 57% 
|                                |  |                               |  |                     |  |     
|Net Proceeds                    |  | $8,158,070                    |  | $5,170,057          |  | 58% 
|                                |  |                               |  |                     |  |     
|Net Profits Income              |  | $7,149,251                    |  | $4,462,096          |  | 60% 
|                                |  |                               |  |                     |  |     

---

|(a) | Because of the interval between time of production and receipt of royalty income by the trust, oil and gas sales for the quarter ended March 31 generally represent oil
production for the period November through January and gas production for the period October through December.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | Oil and gas sales volumes are allocated to the net profits interests based upon a formula that considers oil and gas prices and the total amount of production expense and
development costs. Changes in any of these factors may result in disproportionate fluctuations in volumes allocated to the net profits interests. Therefore, comparative discussion of oil and gas sales volumes is based on the underlying properties.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(c) | Includes an overhead charge which is deducted and retained by XTO Energy. As of March 31, 2006, this charge was $26,493 per month (including a monthly overhead charge of
$2,413 which XTO Energy deducts as operator of the Penwell Unit) and is subject to adjustment each May based on an oil and gas industry index.
|--- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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The following are explanations of significant variances on the underlying properties from first quarter 2005 to 2006:

Sales Volumes

Oil

Oil sales volumes increased 1% from first quarter 2005 to first quarter 2006 primarily because of the timing of cash receipts, partially offset by natural production
decline.

Gas

Gas sales volumes increased 32% from
first quarter 2005 to first quarter 2006 primarily because of receipts from four purchasers related to prior period gas sales from new wells. Excluding the effect of these prior period gas sales, first quarter gas sales volumes decreased
approximately 9% primarily because of natural production decline.

Sales Prices

Oil

The first quarter 2006 average oil price was $54.78 per Bbl, a 30% increase from the first quarter 2005 average
price of $42.25 per Bbl. Oil prices increased from first quarter 2005 to first quarter 2006 primarily because of increasing global demand and supply shortage concerns, inadequate refining capacity, reduced production as a result of tropical storms
and hurricanes in the Gulf of Mexico in 2005 and political instability. NYMEX oil prices increased to record levels in April 2006, exceeding $75.00 per Bbl. Oil prices are expected to remain volatile. The average NYMEX price for February and March
2006 was $62.45 per Bbl. At April 26, 2006, the average NYMEX futures price for the following twelve months was $74.76 per Bbl. Recent trust oil prices have averaged approximately 10% lower than the NYMEX price.

Gas

The first quarter 2006 average gas price was $9.29 per Mcf, a
33% increase from the first quarter 2005 average price of $6.96 per Mcf. Gas prices increased from first quarter 2005 to first quarter 2006 primarily due to the effects of hurricanes on Gulf of Mexico production in 2005, as well as increased demand
and declining North American production. Prices will continue to be affected by weather, the U.S. economy, the level of North American production and import levels of liquified natural gas, and are expected to remain volatile. The first quarter 2006
gas price is primarily related to production from October through December 2005, when the average NYMEX price was $12.80. The average NYMEX price for January through March 2006 was $7.91 per MMBtu. At April 26, 2006, the average NYMEX futures
price for the following twelve months was $9.32 per MMBtu. Recent trust gas prices have averaged approximately 13% lower than the NYMEX price.

Costs

Taxes

Taxes, transportation and other increased
78% for the first quarter primarily because of higher production taxes related to higher revenues and increased property taxes related to the timing of disbursements.



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##### Table of Contents

Production Expense

Production expense was 22% higher for the first quarter primarily because of increased maintenance, power and fuel and other costs, as well as the timing of projects and disbursements.

Development

Development costs increased 158% for the first quarter
primarily because of increased activity and costs related to properties underlying the 75% net profits interests.

Reversion Agreement

Certain of the properties underlying the 90% net profits interests are subject to a reversion agreement between XTO Energy and an unrelated third party. The agreement
calls for XTO Energy to transfer 25% of its interest in those properties to the third party when net amounts received by XTO Energy from the properties subject to the agreement equal the purchase price of the properties plus a 1% per month
return on the unrecouped purchase price, known as payout. If payout were to occur and the 25% interest were to be transferred to the third party, net proceeds payable to the trust and trust distributions to unitholders would be reduced. Based on
recent prices and sales volumes, XTO Energy has informed the trustee that payout may occur within the next year, which would reduce monthly distributions by approximately 5%. Anticipated payout has recently been accelerated by higher product prices
and increased development of properties subject to the reversion agreement. Changes in product prices and sales volumes significantly affect when payout occurs.

Forward-Looking Statements

This report on Form 10-Q includes forward-looking statements within the meaning of Section 27A
of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements other than statements of historical fact included in this Form 10-Q including, without limitation, statements
regarding the net profits interests, underlying properties, development activities, development, production and other costs and expenses, oil and gas prices and differentials to NYMEX prices, supply shortages, distributions to unitholders, timing of
payout under the reversion agreement and industry and market conditions, are forward-looking statements that are subject to risks and uncertainties which are detailed in Part I, Item 1A of the trusts Annual Report on Form 10-K for the
year ended December 31, 2005, which is incorporated by this reference as though fully set forth herein. Although XTO Energy and the trustee believe that the expectations reflected in such forward-looking statements are reasonable, neither XTO
Energy nor the trustee can give any assurance that such expectations will prove to be correct.



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|Item 3. | Quantitative and Qualitative Disclosures about Market Risk.
|------- | -----------------------------------------------------------

There have been no material changes in the trusts market risks, as disclosed in Part II, Item 7A of the trusts Annual Report on Form 10-K for the year ended December 31, 2005.



|Item 4. | Controls and Procedures.
|------- | ------------------------

As of the end of the period
covered by this report, the trustee carried out an evaluation of the effectiveness of the design and operation of the trusts disclosure controls and procedures pursuant to Exchange Act Rules 13a-15 and 15d-15. Based upon that evaluation, the
trustee concluded that the trusts disclosure controls and procedures are effective in timely alerting the trustee to material information relating to the trust required to be included in the trusts periodic filings with the Securities
and Exchange Commission. In its evaluation of disclosure controls and procedures, the trustee has relied, to the extent considered reasonable, on information provided by XTO Energy Inc. There has not been any change in the trusts internal
control over financial reporting during the period covered by this report that has materially affected, or is reasonably likely to materially affect, the trusts internal control over financial reporting.



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##### Table of Contents

PART II - OTHER INFORMATION

Item 1.

Not applicable.



|Item 1A. | Risk Factors.
|-------- | -------------

There have been no material
changes in the risk factors disclosed under Part I, Item 1A of the trusts Annual Report on Form 10-K for the year ended December 31, 2005.

Items 2 through 5.

Not applicable.



|Item 6. | Exhibits.
|------- | ---------

(a) Exhibits.

Exhibit Number and Description



|     |  |                                                                                                                                                                                        
|---- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|(15) |  | Awareness letter of KPMG LLP                                                                                                                                                           
|     | 
|(31) |  | Rule 13a-14(a)/15d-14(a) Certification                                                                                                                                                 
|     | 
|(32) |  | Section 1350 Certification                                                                                                                                                             
|     | 
|(99) |  | Items 7 and 7A to the Annual Report on Form 10-K for Cross Timbers Royalty Trust filed with the Securities and Exchange Commission on March 16, 2006 (incorporated herein by
reference)



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##### Table of Contents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this Report to
be signed on its behalf by the undersigned thereunto duly authorized.



|                     |  |  |  |    |  |                                   |  |                                                     
|-------------------- |  |  |  | -- |  | --------------------------------- |  | ----------------------------------------------------
|                     |  |  |  |    |  | CROSS TIMBERS ROYALTY TRUST      
|                     |  |  |  |    |  | By BANK OF AMERICA, N.A., TRUSTEE
|                     |  |  |  |   
|                     |  |  |  |    |  | By                                |  | /s/ NANCY G. WILLIS                                 
|                     |  |  |  |    |  |                                   |  | Nancy G. Willis                                     
|                     |  |  |  |    |  |                                   |  | Vice President                                      
|                     |  |  | 
|                     |  |  |  |    |  | XTO ENERGY INC.                  
|                     |  |  | 
|Date: April 28, 2006 |  |  |  | By |  | /s/ LOUIS G. BALDWIN             
|                     |  |  |  |    |  |                                   |  | Louis G. Baldwin                                    
|                     |  |  |  |    |  |                                   |  | Executive Vice President and Chief Financial Officer



17