10 



The Philippine Journal of Science 



1917 



1, the monkey was placed on the tennis court chained to a small 

 scantling, 6.5 by 7.5 centimeters, that was lying on the ground. 

 He was free to move about and to sit on the scantling, which 

 would not be so hot and which would raise him about 6.5 centi- 

 meters above the ground. He was put out at 8.25 in the fore- 

 noon. This day was also a bright day. The Weather Bureau 

 records show seven hours and eighteen minutes of sunshine. 

 Taking these records again as a basis for our estimate, he was 

 exposed to the sun and hot ground from 8.25 until 11.01 (two 

 hours and twenty-four minutes), from 11.25 to 11.45, and from 

 12.05 to 2.45 (two hours and twenty-eight minutes). Table VI 

 shows the effects of these conditions upon the monkey's temper- 

 ature. 



Table VI. — Combined action of sun and hot ground on the monkey. 

 Monkey U, in the sun and on the ground, December 1, 1911. 



Time. 



Air temperature. • 



Body 

 temper- 

 ature. 



Remarks. 



On 

 ground. 



8.5 cm. 



above 



ground. 



Im. 



above 



ground. 



7.B6 

 8.25 

 9.43 

 10. B5 

 1.17 

 2.30 

 3.15 

 4.00 



°C. 



"C. 



'C. 

 22.6 



•c. 



37.4 



Shade (in the house) . 



Exposure began, sun. 



Sunshine, b 



Do.b 



Do.b 



Do.b 



Cloud, b 



Do.b 







38 



42 



46 



44.5 



37.5 



34 



32 



32.5 



35 



36 



30.5 



29.5 



28.6 



29 



32 



32.5 



29 



29 



39.8 

 39.4 

 40.5 

 41.7 

 42.0 

 39.0 



• Air temperature as indicated by chemical thermometers kept in the sun in the positions 

 indicated — namely, on the ground, 8.5 centimeters above the ground, and 1 meter above the 

 srround. 



b Sunshine and cloud as recorded at the Weather Bureau, 0.3 kilometer away. 



It will be seen from Table VI that the combined action of the 

 sun and the hot ground for two hours and twenty minutes in 

 the forenoon (8.25-10.55) did not raise the temperature of 

 this monkey above its maximum normal. If monkeys "die in 

 seventy to eighty minutes" when placed on the ground in the Ma- 

 nila sun, this monkey had already acquired a marked increase in 

 powers of resistance; but since not all days are alike, even in 

 Manila, it is necessary to study the meteorological conditions 

 before drawing a conclusion. On December 1, the day of the 

 exposure under consideration, the conditions seemed to be as 

 severe as those obtaining when some of Aron's monkeys died. 

 This is brought out by a comparison of Table VII with Table V. 



