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                                                                   EXHIBIT 10.51



August 8, 1997

                                                        BY HAND

Mr. Robert M. Johnson
4397 Jett Place
Atlanta, GA 30327

RE:  EMPLOYMENT: CHIEF OPERATING OFFICER

Dear Bob:

We are pleased to offer you a position with the Company as Chief Operating
Officer pursuant to the terms outlined below. As discussed, your employment
commencement date will be not later than the week of August 25, 1997.

DUTIES, SALARY AND BONUSES:

You will serve full-time as Chief Operating Officer and perform all services and
duties as required.

Your starting salary will be $177,000.00 per annum. Annual salary increases and
stock options will be at the discretion of the Board. Your individual annual
bonus potential will be up to an aggregate of $50,000.00 based upon achievement
of specified milestones. Your individual first year bonus potential of up to an
aggregate of $50,000.00 will be based upon the following five milestones: PMA
accepted for filing by the FDA; ISO 9001 certification; securing necessary
regulatory certifications to support European product launch; launch of the
Biofield Diagnostic System in Europe; and introduction of the Biofield
Diagnostic System in one additional key worldwide market. Each of the
above-stated milestones will account for 20 percent of your first year bonus
potential.

In addition, upon commencement of employment with the Company, you will receive
a one-time payment of $10,000.00 (subject to "gross up").

BENEFITS\HEALTH INSURANCE:

The Company will provide you with medical, dental and disability insurance in
accordance with the Company's plans. In addition, the Company presently provides
executive officers an automobile allowance in the amount of $400.00 per month
(subject to "gross up").


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Mr. Robert M. Johnson
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STOCK OPTIONS:

In connection with your employment by the Company, you will be granted an
aggregate of 125,000 non-qualified stock options upon commencement of
employment. These options will have an exercise price equal to the closing price
on the NASDAQ stock exchange on the day prior to your commencement date and
shall vest in equal installments over a four year period. These options shall
become fully vested in the event of a change in control of the Company upon a
merger, sale or acquisition.

In addition, you will be eligible to receive up to an aggregate of 50,000
additional stock options upon achievement of any two out of following three
milestones (25,000 for each milestone): (a) PMA Approval for the Biofield
Diagnostic System; (b) the consummation of a formal agreement with a European or
Worldwide corporate partner for the Biofield Diagnostic System; or (c) the sale
of an aggregate of 80 Biofield Diagnostic Devices to an unrelated third party or
parties. These options will have an exercise price equal to the closing price on
the NASDAQ stock exchange on the day prior to occurrence of each of these
milestones and shall vest in equal installments over a four year period.

CONFIDENTIALITY AGREEMENT:

In connection with your employment by the Company, we will provide for your
signature our standard confidentiality and secrecy agreement, which includes
assignment of intellectual property provisions (copy enclosed).

TERMINATION:

In the event that your employment with the Company is terminated by the Company
for a reason other than cause (as defined below), the Company will, for a period
of six (6) months from the date of termination, pay you severance at your rate
of base salary at the time of termination. The Company shall have cause for
termination of employment only in the event of one of the following: fraud or
embezzlement by you from the Company; your willful failure to substantially
perform your duties; your breach of the confidentiality and secrecy agreement to
be entered into by you and the Company; or your conviction as a felon. No
severance will be owed or paid to you in the event your employment is terminated
due to death, long-term disability or if you voluntarily leave the employ of the
Company.

Any disputes relating to termination for cause shall be submitted to binding
arbitration by and pursuant to the rules of the American Arbitration
Association. In the event of a dispute, the parties shall use reasonable efforts
to obtain a timely resolution of such dispute by arbitration. The arbitrator's
decision shall be final and binding and enforceable in any court of competent
jurisdiction.


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Mr. Robert M. Johnson
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Once again, on behalf of the Biofield team, I am pleased to offer you a position
during this exciting time for the Company. We look forward to hearing from you
later today.

Sincerely,



D. Carl Long
President and Chief Executive Officer

DCL\mm
Encl.

Agreed to and Accepted
this ___ day of August, 1997





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Robert M. Johnson