TABLE VIII.-Boric acid and borax ingested and recovered in the urine during Series I–V, inclusive.

It is important in the study of the problems under discussion to secure, as nearly as possible, the complete medical history of each of the individual subjects. This was not officially arranged for, however, at the very beginning of the work, and the medical history of each case for some time was secured without the supervision of the representative of the Public Health and Marine-Hospital Service who afterwards took charge of this part of the work.

PHYSICAL AND MEDICAL EXAMINATIONS.

The results of the physical and medical examination of each of the members of the class, made just before the beginning of the fore period of Series I, are summarized in Table IX, the examination being conducted by Dr. Edwin B. Behrends, with the collaboration of Dr. Andrew Stewart, to whom thanks are due for the valuable and voluntary services rendered. A summary of all the analyses of urine is given in Table X.

TABLE IX.-Preliminary physical examination of twelve men, each designated by number and initials.

TABLE IX.-Preliminary physical examination of twelve men, each designated by number and initials-Continued.

TABLE IX.—Preliminary physical examination of twelve men, each designated by number and initials-Continued.

TABLE X.-Urinalysis for six men, made by Dr. Andrew Stewart December 14, 1902.

a Corrections made in each case as follows: No. 1, for 63° F.; No. 2, 92° F.; No. 3, 84° F.; No. 4, 78° F.; No. 5, 66° F.; No. 6, 91° F.

Pus, few; blood, few
Few

None.

The advisability of a constant medical supervision of the subjects of the experiment resulted, as has already been stated, in the detail by authority of the Secretary of the Treasury, at the request of the Secretary of Agriculture, of Dr. H. D. Geddings, from the Public Health and Marine-Hospital Service, by Surgeon-General Wyman, in charge of that service. An inspection of the physical condition of each one of the subjects was made once a week by Doctor Geddings, and, in case of illness, special examinations were conducted on intermediate dates. The data obtained by Doctor Geddings have been by him consolidated and reduced to a short medical history of each of the subjects while under his supervision. These data are as follows:

Preliminary observations:

No. 1-J. N., age 29.

Heart-Sounds normal; rate very slow.

Lungs-Normal.

Previous indisposition-Indigestion and diarrhea during Spanish-American war. Periodical observations:

Feb. 26. No deviation from normal.

Mar. 6. Some diarrhea in two different days; otherwise feels well.

12. Slight headache for past two days; appetite impaired for past twentyfour hours; no diarrhea.

19. Has regained normal condition.

Apr. 2. Has had an excess of diarrheal trouble in past three or four days; suggested taking of bismuth tablet No. 1.

9. Has improved; diarrhea relieved.

23. Diarrhea has given no trouble; is in his normal condition.

Previous indisposition-Erysipelas; recent cicatrices on chest.

Periodical observations:

Feb. 26. No deviation from normal.

Mar. 6. Symptoms are those of a mild attack of grippe; better than yesterday. 12. Normal.

19. Better; has regained normal condition.

Apr. 2. Continues doing well.

Heart-Normal; apex beat slightly displaced outward; forcible.
Lungs-Normal.

Physical condition-Robust.