XII, B. 1 



Shaklee: Experimental Acclimatization 



Table V. — Relation of heat from the ground," of the wind, and of humidity 

 to the monkey's death in the sun. 



Monkey of— 



Date. 



Time of 

 death. 



Time of 

 weather 

 observa- 

 tion. 



Black- 

 bulb. 



Wind.c 



Rela- 

 tive 

 humid- 

 ity. 



Dura- 

 tion of 

 expo- 

 sure. 



Remarks. 



Aron: 



1910. 



a. m. 



a. m. 



°C. 



M. 



8. 



P. et. 



H.m. 





2 



Oct. 16 

 1911. 



10.08 

 p. m. 



10.00 

 p. m. 



51.8 











69 



38 



On hot surface. 





11 



Jan. 18 



4.15 



4.O0 



43.3 



3 







63 



1 50 



Do. 



bl2 



Jan. 18 



3.10 

 a. m. 



3.00 

 a. m. 



47.3 



3 



6 



61 



45 



Do. 



13 



Jan. 26 



11.50 



12.00 



42.4 



3 



5 



66 



1 



Do. 



Shaklee: 





















4 



Nov. 29 





10.00 

 p. m. 



51.7 



2 







56.0 



1 25 



Not on hot sur- 

 face. 







4 (contin- 

 ued). 







1.00 



50.9 



4 



1 51.5 



4 25 



Do. 











4(conclud 

 ed. 





Lived 



4.00 



44.4 











50.0 



7 15 



Do. 





*■ Heat from ground is not shown in this table, 

 f" No. 12 was shaved. 

 ^ Velocity in meters per second. 



Note: Reports for monkeys 2, 11, and 12 were taken from page 111 of Aron's paper, and 

 for monkey 13 from page 114 of the same paper. 



It will be seen from Table V that the heat from the sun's 

 rays as indicated by the black-bulb thermometer was considerably 

 greater in the case of the monkey that lived than in the cases 

 of three that died. Therefore it cannot be said that the sun's 

 rays killed Aron's monkeys. The wind conditions were as favor- 

 able to the monkeys that died, but the humidity of the air sur- 

 rounding the monkeys that died was much greater. There is 

 another important factor in the death of Aron's monkeys which 

 must not be overlooked. His monkeys rested on the ground or 

 roof. The ground and roofs become very hot in a hot sun. It 

 seems possible that the heat which the monkey's body received 

 from the hot roof or from the ground may have far exceeded 

 that absorbed from the sun's rays. 



Since the sun's rays combined with the other weather condi- 

 tions produced so little effect upon monkey 4, in absence of the 

 heat from the ground, it was decided to place the monkey on 

 the ground, to determine the influence of the heat from the 

 ground. 



The effect of the combined action of the sun and the heat 

 radiated and conducted from the ground. — On Friday, December 



