BODY TEMPERATURE. 255 



withstanding very material alterations in the diet without noticeable 

 disturbance. 



In the recent study made by Loewy and Zuntz/ the latter found no 

 change in his body temperature at the end of his experiments on low diet, 

 the values obtained in 1916 being no lower than those recorded prior 

 to the war. No temperature measurements for Loewy are reported. 



DIFFICULTIES IN TEMPERATURE REGULATION AS INDICATED BY CLOTHING. 



A noticeable feature of the experiment, which became evident about 

 the middle of November and was more pronounced in the latter part 

 of the research, was the extreme sensitivity of the subjects to cold.^ 

 The winter of 1917-18 was unusually severe, which may, in small 

 part, have accounted for this increased sensitivity, but the evidence 

 seems to be clear that the men on diet were actually more sensitive 

 to cold than their college mates living under normal conditions. 



This increased sensitivity to cold manifested itself in several ways: 



(1) Nearly all of the men wore heavier underclothing than usual 

 and were inclined to wear more over clothing, 



(2) The bed clothing was frequently very noticeably increased. 



(3) The men were also inclined to gather about the steam radiators 

 whenever possible. 



(4) They avoided swimming in the natatorium, although the water 

 felt comfortably warm to their college mates. 



As early as November 4, 1917, several of the men, especially Pec, 

 Can, and Pea, complained of being cold during the morning respira- 

 tion experiments. Although the temperature of the room was normal, 

 they asked for additional blankets, and Pea had changed to heavy 

 winter underwear on the day previous on account of the cold. After 

 the excess diet on the uncontrolled Sundays, it was not infrequently 

 reported by the subjects that they felt much warmer and more com- 

 fortable than on the days when the diet was restricted. 



December 6, Can, Tom, and Pec complained of the cold hands of 

 the assistant who was taking the pulse-rate. At the Nutrition Labora- 

 tory, although the halls were sufficiently warm for persons wearing 

 ordinary clothing, it was noted that when the later series of profile 

 photographs was taken with Squad A, gooseflesh appeared almost 

 immediately when the subject removed his bath wrap. This did not 

 occur with Squad B. On reaching the Laboratory when they came 

 to Boston, the members of Squad A would gather around the radiators 

 and apparently take this time to get warm. 



On February 2 (the experiment ended on February 3) each member 

 of the squad was questioned particularly with regard to clothing 

 worn during the experiment. Their comments follow : 



Pea reported that during his 3 years in college he had always worn light 

 underwear through the winter and did not feel the cold. During the 



* Loewy and Zuntz, Berl. klin. Wochenschr., 1916. 53, p. 829. 



^ Increased sensitivity to cold was experienced by the fasting subject. (Benedict, Carnegie 

 Inst. Wash., Pub. No. 203, 1915, p. 194.) 



