526 PHALEN. 



THE SCOPE OF THE TEST. 



In an indorsement from the office of the Surgeon-General, a number 

 of suggestions for the carrying out of the experiment were made, the most 

 important being as follows: 



In order that other conditions may be the same, the orange-red clothing should 

 be issued to half companies occupying the same barracks; the special clothing 

 should be worn at all times for at least a year, and the controls should have 

 exactly the same clothing, except for color. 



If practicable, the same medical officers should remain on duty with the 

 troops under observation for the entire period and should keep a careful record 

 of the comparative amounts and nature of sickness among them; also of the 

 subjective sensations of the soldiers as to comfort or discomfort in the sun, 

 their mental and bodily vigor, etc. 



A number of officers and enlisted men who are specially susceptible to the 

 effects of the sun should be equipped with the orange-red garments and re- 

 quired to report the results. 



With these suggestions as a basis, the Board, in cooperation with 

 Colonel J. van H. Hoff, the chief surgeon, drew up a plan for the experi- 

 ment which was approved by the division commander. The main details 

 for the test were as follows : 



(a) The equipment of approximately 1,000 men with the colored under- 

 clothing and hat linings, with 1,000 men as controls to be furnished with white 

 underclothing of similar texture. The men to be taken from different branches 

 of the service and at widely separated posts so that all sections of the Islands 

 should be covered. For this purpose the following troops, on account of the 

 above reasons and because they had the necessary year to serve in the division, 

 were selected: 



Fifth Field Artillery, Fort McKinley, Luzon. 



First Cavalry, Camp Stotsenburg, Luzon. 



Fourth Infantry, Camp Jossman, Iloilo. 



Twenty-third Infantry. Zamboanga, Mindanao. 



(6) That the men who wear the special clothing and the controls should be 

 taken from the same companies, which were to be equally divided in such a 

 manner as to make the two groups as nearly similar as possible in physique; 

 all men of long tropical service and those of exceptionally weak constitution to 

 be excluded from the companies before dividing. 



(c) That all officers, and especially those particularly susceptible to the effects 

 of the tropical sun, should be invited to equip themselves with the special under- 

 clothing and report upon it at the end of the period of experiment. 



(d) That a medical officer be detailed at each of the posts mentioned above, 

 whose duty it would be to supervise the details of the test at his post. That 

 these medical officers should not be separated from the troops equipped with 

 the special clothing nor given duties that would interfere with the performance 

 of this work. The medical officers selected for the duty were as follows: Fort 

 William McKinley, Major C. C. Collins; Camp Stotsenburg, First Lieutenant 

 G. L. McKinley; Camp Jossman, Captain L. M. Hathaway; 3 Zamboanga, First 

 Lieutenant C. D. Cowles, jr. 



3 Almost at the beginning Captain Hathaway asked to be relieved from this 

 duty and First Lieutenant Hiram A. Phillips was detailed in his stead. 



