444 CHAMBERLAIN. 



was elevated more than 8 millimeters of mereurj^ above the resting 

 average. These are the effects which one would expect from moderate 

 exercise indulged in by healthy, well trained men in hot weather. "When 

 we come to compare the two complexion types, it is interesting to note 

 that the effects of the exertion were slightly more marked on the brunettes 

 than on the blonds in all but one of the 20 observation averages, and in 

 that one they were equal. The figures for examinations after exercise, 

 as contrasted with those when the men were at rest, show that the loss 

 of weight was a little more pronounced, and the elevation of the pulse, 

 temperature, respiration, and blood-pressure was slightly more marked 

 for the brunettes than it was for the blonds. We would not for a moment 

 argue, because of these slight differences, that the brunettes are less fit 

 than the blonds, but the figures certainly strongly indicate that the 

 brunettes are no tetter able to endure exercise in the Philippines than 

 are their fair skinned comrades. 



SUMMARY OF PART II. 



The differences between these exact observations on the blond* and 

 on the brunettes are so slight and inconstant as to be of no significance. 

 The tests fail to show any anatomical or physiological distinctions for 

 the two complexion types in large groups of men who, at the end of the 

 year of observation, had been continuously exposed to the Philippine 

 climate for an average of 26.9 months in the case of the 1909-Grroup 

 and 18.4 months in the case of the 1910-Grroup. This conclusion agrees 

 with that reached b}^ Wickline when examining American soldiers in 

 the Philippines. (9) 



PART III. RELATIVE AMOUNTS OF SICKNESS AMONG BLONDS AND BRUNETTES 

 OP THE 1909-GROUP, THE 1910-GROUP, AND THE SCOUT-CONSTABU- 

 LARY-POLIOE-GROUP. 



The relative number of admissions and of days on sick report for the 

 blond and the brunette types in the 1909-Group and the 1910-Group 

 is deemed to be of much value in this study, first, because of the large 

 number of men considered (504 blonds and 500 brunettes) and, secondly, 

 because of the long average period of tropical service over which the 

 collection of the sick data extends. The statistics of sickness for the men 

 have been obtained from their official sick record not onh- for the 

 period of one year, during which the observations described in Part II 

 were under way, but also for all the availahle continuous Philippine 

 service of each man before the physical tests began and after they were 

 concluded. As a result the sick records in the 1909-Group extend over 

 an average period of considerably more than twenty-four months of 

 unbroken tropical service. In the 1910-Group the average continuous 

 Philippine residence during which the sick rates have l^een gathered is 

 22.4 months. For the combined groups the average approximates two 

 years. The results are shown in Table XXI. 



