xn, B, 1 



Shaklee: Experimental Acclimatization 



At frequent intervals the monkey was given all the water it 

 would drink. 



The body temperature was taken at intervals through the 

 day with a clinical thermometer, pushed well into the rectum 

 and kept in place until there was no further rise. The monkey 

 was excited as little as possible. 



Temperature of the m^onkey in the shade. — The observations 

 on this monkey's temperature were begun on the afternoon of 

 November 27. The monkey was at first kept in the shade in 

 the animal house (iron roof 3 to 5 meters high, no ceiling, well 

 ventilated through netting). On November 28 the temperature 

 both of the monkey and of the surrounding air was observed. 

 The results of the observations are given in Table I. 



Table I. — Temperature of monkey i in shade in the animal house, 



November 28, 1911. 



Time. 



Air tem- 

 perature 

 in house. 



Body 

 tempera- 

 ture. 



a. m. 



°C. 



°C. 



8.20 



25 



38.0 



10.00 



80 



38.0 



11.00 



31 



38.6 



V. n»- 







1.42 



31.7 



38.9 



2.40 



32 



39.0 



3.40 



30 



39.3 



4.20 



30.5 



39.2 



From Table I it is seen: (1) That there may be a rather 

 marked rise in the body temperature of monkeys kept in the 

 shade ; that the body temperature began to rise between 10 and 

 11 o'clock, after the air temperature had reached 30° C, that is, 

 after the air temperature had already risen 5° ; (2) that, al- 

 though the monkey remained in the sun throughout the day, 

 about one half of the rise in body temperature occurred between 

 10 and 11 o'clock; (3) that it continued to rise gradually until 

 3.40 in the afternoon; (4) that between 2.40 and 3.40 in the 

 afternoon the rise in body temperature was accompanied by 

 a fall in air temperature; (5) that the maximum body tem- 

 perature (39.3°) was apparently one hour later than the max- 

 imum air temperature (32°) ; (6) that the body temperature 

 fell more slowly than the air temperature ; (7) that this monkey's 

 maximal normal body temperature is probably not below 39.5°, 

 an observation in accord with the findings of Simpson and 



