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|   | (a) | EXERCISE      OF WARRANT. |
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|   | (b) | RESERVATION      OF SHARES. The Company shall at all times reserve for issuance and/or      delivery upon exercise of this Warrant such number of shares of its Common      Stock as shall be required for issuance and delivery upon exercise of the      Warrants. |
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|   | (c) | FRACTIONAL      SHARES. No fractional shares or scrip representing fractional shares shall      be issued upon the exercise of this Warrant. With respect to any fraction      of a share called for upon any exercise hereof, the Company shall pay to      the Holder an amount in cash equal to such fraction multiplied by the      current market value of a share, determined as  follows: |
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|   | (d) | EXCHANGE,      TRANSFER, ASSIGNMENT OR LOSS OF WARRANT. This Warrant is exchangeable,      without expense, at the option of the Holder, upon presentation and      surrender hereof to the Company for other warrants of different      denominations entitling the holder thereof to purchase in the aggregate      the same number of shares of Common Stock purchasable hereunder. Upon      surrender of this Warrant to the Company at its principal office with the      Assignment Form annexed hereto duly executed and funds sufficient to pay      any transfer tax, the Company shall, without charge, execute and deliver a      new Warrant in the name of the assignee named in such instrument of      assignment and this Warrant shall promptly be cancelled. This Warrant may      be divided or combined with other warrants which carry the same rights      upon presentation hereof at the principal office of the Company together      with a written notice specifying the names and denominations in which new      Warrants are to be issued and signed by the Holder hereof. The term      "Warrant" as used herein includes any Warrants into which this Warrant may      be divided or exchanged. Upon receipt by the Company of evidence      satisfactory to it of the loss, theft, destruction or mutilation of this      Warrant, and (in the case of loss, theft or destruction) of reasonably      satisfactory indemnification, and upon surrender and cancellation of this      Warrant, if mutilated, the Company will execute and deliver a new Warrant      of like tenor and date. Any such new Warrant executed and delivered shall      constitute an additional contractual obligation on the part of the      Company, whether or not this Warrant so lost, stolen, destroyed, or      mutilated shall be at any time enforceable by  anyone. |
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|   | (e) | RIGHTS      OF THE HOLDER. The Holder shall not, by virtue hereof, be entitled to any      rights of a shareholder in the Company, either at law or equity, and the      rights of the Holder are limited to those expressed in the Warrant and are      not enforceable against the Company except to the extent set forth      herein. |
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|   | (f) | ANTI-DILUTION      PROVISIONS. The Exercise Price in effect at any time and the number and      kind of securities purchasable upon the exercise of the Warrants shall be      subject to adjustment from time to time upon the happening of certain      events as follows: |
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|   | (1) | In      case the Company shall (i) declare a dividend or make a distribution on      its outstanding shares of Common Stock in shares of Common Stock, (ii)      subdivide or reclassify its outstanding shares of Common Stock into a      greater number of shares, or (iii) combine or reclassify its outstanding      shares of Common Stock into a smaller number of shares, the Exercise Price      in effect at the time of the record date for such dividend or distribution      or of the effective date of such subdivision, combination or      reclassification shall be adjusted so that the Exercise Price shall be      proportionately increased (as in the case of (iii), above) or decreased      (as in the case of (i) or (ii), above). Such adjustment shall be made      successively whenever any event listed above shall  occur. |
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|   | (2) | Whenever      the Exercise Price payable upon exercise of each Warrant is adjusted      pursuant to Subsections (1) above, the number of Shares purchasable upon      exercise of this Warrant shall simultaneously be adjusted by multiplying      the number of Shares initially issuable upon exercise of this Warrant by      the Exercise Price in effect on the date hereof and dividing the product      so obtained by the Exercise Price, asadjusted. |
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|   | (3) | No      adjustment in the Exercise Price shall be required unless such adjustment      would require an increase or decrease of at least two cents ($0.02) in      such price; provided, however, that any adjustments which by reason of      this Subsection (5) are not required to be made shall be carried forward      and taken into account in and subsequent adjustment required to be made      hereunder. All calculations under this Section (f) shall be made to the      nearest cent or to the nearest one-hundredth of a share, as the case may      be. Anything in this Section (f) to the contrary notwithstanding, the      Company shall be entitled, but shall not be required, to make such changes      in the Exercise Price, in addition to those required by this Section (f),      as it shall determine, in its sole discretion, to be advisable in order      that any dividend or distribution in shares of Common Stock, or any      subdivision, reclassification or combination of Common Stock, hereafter      made by the Company shall not result in any Federal income tax liability      to the holders of Common Stock or securities convertible into Common or      Common Stock (including Warrants). |
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|   | (4) | Whenever      the Exercise Price is adjusted, as herein provided, the Company shall      promptly but no later than 20 days after any request for such an      adjustment by the Holder, cause a notice setting forth the adjusted      Exercise Price and adjusted number of Shares issuable upon exercise of      each Warrant, and, if requested, information describing the transactions      giving rise to such adjustments, to be mailed to the Holder at his last      address appearing in the Warrant Register, and shall cause a certified      copy thereof to be mailed to its transfer agent, if any. The Company may      retain a firm of independent certified public accountants selected by the      Board of Directors (who may be the regular accountants employed by the      Company) to make any computation required by this Section (t), and a      certificate signed by such firm shall be conclusive evidence of the      correctness of such adjustment. |
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|   | (5) | In      the event that at any time, as a result of an adjustment made pursuant to      Subsection (1) above, the Holder of this Warrant thereafter shall become      entitled to receive any shares of the Company, other than Common Stock,      thereafter the number of such other shares so receivable upon exercise of      this Warrant shall be subject to adjustment from time to time in a manner      and on terms as nearly equivalent as practicable to the provisions with      respect to the Common Stock contained in Subsections (1) to (4), inclusive      above. |
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|   | (6) | Irrespective      of any adjustments in the Exercise Price or the number or kind of shares      purchasable upon exercise of this Warrant, Warrants theretofore or      thereafter issued may continue to express the same price and number and      kind of shares as are stated in the similar Warrants initially issuable      pursuant to this Agreement. |
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|   | (g) | OFFICER'S      CERTIFICATE. Whenever the Exercise Price shall be adjusted as required by      the provisions of the foregoing Section, the Company shall forthwith file      in the custody of its Secretary or an Assistant Secretary at its principal      office an officer's certificate showing the adjusted Exercise Price      determined as herein provided, setting forth in reasonable detail the      facts requiring such adjustment, including a statement of the number of      additional shares of Common Stock, if any, and such other facts as shall      be necessary to show the reason for and the manner of computing such      adjustment. Each such officer's certificate shall be made available at all      reasonable times for inspection by the Holder or any holder of a Warrant      executed and delivered pursuant to Section (a) and the Company shall,      forthwith after each such adjustment, mail a copy by certified mail of      such certificate to the Holder or any such  holder. |
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|   | (h) | NOTICES      TO WARRANT HOLDERS. So long as this Warrant shall be outstanding, (i) if      the Company shall pay any dividend or make any distribution upon the      Common Stock  or (ii) if the Company shall offer to the holders      of Common Stock for subscription or purchase by them any share of any      class or any other rights or (iii) if any capital reorganization of the      Company, reclassification of the capital stock of the Company,      consolidation or merger of the Company with or into another corporation,      sale, lease or transfer of all or substantially all of the property and      assets of the Company to another corporation, or voluntary or involuntary      dissolution, liquidation or winding up of the Company shall be effected,      then in any such case, the Company shall cause to be mailed by certified      mail to the Holder, at least fifteen days prior to the date specified in      (x) or (y) below, as the case may be, a notice containing a brief      description of the proposed action and stating the date on which (x) a      record is to be taken for the purpose of such dividend, distribution or      rights, or (y) such reclassification, reorganization, consolidation,      merger, conveyance, lease, dissolution, liquidation or winding up is to      take place and the date, if any is to be fixed, as of which the holders of      Common Stock or other securities shall receive cash or other property      deliverable upon such reclassification, reorganization, consolidation,      merger, conveyance, dissolution, liquidation or winding  up. |
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|   | (i) | RECLASSIFICATION,      REORGANIZATION OR MERGER. In case of any reclassification,      capital reorganization or other change of outstanding shares of Common      Stock of the Company, or in case of any consolidation or merger of the      Company with or into another corporation (other than a merger with a      subsidiary in which merger the Company is the continuing corporation and      which does not result in any reclassification, capital reorganization or      other change of outstanding shares of Common Stock of the class issuable      upon exercise of this Warrant) or in case of any sale, lease or conveyance      to another corporation of the property of the Company as an entirety, the      Company shall, as a condition precedent to such transaction, cause      effective provisions to be made so that the Holder shall have the right      thereafter by exercising this Warrant at any time prior to the expiration      of the Warrant, to purchase the kind and amount of shares of stock and      other securities and property receivable upon such reclassification,      capital reorganization and other change, consolidation, merger, sale or      conveyance by a holder of the number of shares of Common Stock which might      have been purchased upon exercise of this Warrant immediately prior to      such reclassification, change, consolidation, merger, sale or conveyance.      Any such provision shall include provision for adjustments which shall be      as nearly equivalent as may be practicable to the adjustments provided for      in this Warrant. The foregoing provisions of this Section (i) shall      similarly apply to successive reclassifications, capital reorganizations      and changes of shares of Common Stock and to successive consolidations,      mergers, sales or conveyances. In the event that in connection with any      such capital reorganization or reclassification, consolidation, merger,      sale or conveyance, additional shares of Common Stock shall be issued in      exchange, conversion, substitution or payment, in whole or in part, for a      security of the Company other than Common Stock, any such issue shall be      treated as an issue of Common Stock covered by the provisions of      Subsection (1) of Section (f)hereof. |
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|   | (k) | RESTRICTIVE      LEGEND. Each Warrant Share, when issued, shall include a legend in      substantially the following form: |
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|   | THESE      SHARES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE      "ACT") NOR UNDER ANY STATE SECURITIES LAW AND MAY NOT BE PLEDGED, SOLD,      ASSIGNED OR OTHERWISE TRANSFERRED UNTIL A (1) REGISTRATION STATEMENT UNDER      THE ACT AND ANY APPLICABLE STATE SECURITIES LAW HAS BECOME EFFECTIVE WITH      RESPECT THERETO, OR (2) RECEIPT BY THE COMPANY OF AN OPINION OF COUNSEL TO      THE COMPANY TO THE EFFECT THAT REGISTRATION UNDER THE ACT OR APPLICABLE      STATE SECURITIES LAW IS NOT REQUIRED IN CONNECTION WITH THE PROPOSED      TRANSFER. |
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|                         | SPECTRASCIENCE,      INC.                        |
|------------------------------|--------------------------------------------------|
|                         |                                             |
| Attest:                      |          |
|                         | By:                                              |
| James      Hitchin           | James      Hitchin                               |
| Title:      Chairman and CEO | Title:  Secretary                      |

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