BODY TEMPERATURE. 253 



January 27. With the 12 men the values ranged from 33.59° C. to 

 35.00° C. The 4 control men gave values averaging 34.55° C, while 

 the average for the 12 men was essentially the same, 34.43° C. 



On February 2 the last series of skin-temperature measurements 

 was obtained with Squad A. Here again we find a number of dis- 

 tinctly low measurements for the surface of the hand, these occurring 

 with Moy, Tom, and Vea. With Pec the temperature of the left 

 hand was perceptibly lower than that of the right. These readings 

 were very carefully checked several times to determine beyond question 

 this pronounced difference. We are unable to explain it. Personal 

 statements of a member of Pec's family to the effect that one side of 

 his body seemed to be much colder than the other might be con- 

 sidered of significance here were it not for the fact that in the study 

 made of this man on January 26, although the surface temperatures 

 of both hands were low, they agreed with each other to within 0.38° C. 

 The average value for the right hand wuth Squad A on February 2 was 

 32.04° C, which was perceptibly lower than the average found with 6 

 controls (33.10° C). The room temperature on this date was 25.2° C. 



The forehead temperatures for Squad A on the same day ranged from 

 a minimum of 33.46° C. to a maximum of 34.79° C, the average value 

 being 34.20° C. As a matter of fact, this average value is slightly 

 higher than the average forehead temperature of 34.09° C. found for 

 the 6 controls. 



Giving full recognition to the paucity of normals and the difficulty 

 of obtaining accurate skin temperatures, we find that an analysis of 

 the foregoing data does not indicate uniformly lower surface tempera- 

 tures for most of the men. With certain members of the two squads, 

 the skin temperature as measured on the back of the hands was defi- 

 nitely lower than the normal values. In one or two instances, at least, 

 low temperatures for the surface of the hand were observed with con- 

 siderable regularity, these men being those who apparently suffered 

 most from cold hands. Thus Vea, of Squad A, frequently complained of 

 cold hands, and on the two days when his surface temperature was 

 measured values lower than normal were found. On January 26 his 

 values were higher than the average for the whole group, but on Feb- 

 ruary 2 they were lower than the values obtained for any other man in 

 Squad A except for the right-hand temperature of Tom. With Bra 

 very low values were found on January 26, while values sHghtly higher 

 than normal were found on February 2. With Tom a low value was 

 found for both days. Pec, with the single exception of the right-hand 

 measurement on February 2, also gave a low record. With the forehead 

 temperatures the variations from normal show no material uniformity. 



RELATION OF BODY TEMPERATURE TO MUSCULAR ACTIVITY. 



Although considerable emphasis in this research was laid upon the 

 reaction of the pulse-rate to muscular activity, which was studied both 



