ACTION OF THE TROPICAL SUN. 109 



Table III. — Temperature, subcutaneous and rectal of dogs in sun and shade. 









Temperature. 





Date. 



Remarks. 



Time. 







Black-bulb 

 thermometer. 



Rectal. 



Subcu- 

 taneous. 









°C. 



°C. 





1910. 





9.00 a. m. 

 9.30 a. m. 



36.9 

 37.8 





52°. 1 at 11 a.m. 





Oct. 5 



Brown dog, tracheotomized Oct. 4, 

 1910. In animal house. Exposed 

 to sun 9.20 a. m. 



9.40 a. m. 



39.2 









9.50 a. m. 



40.1 









9.55 a. m. 



40.9 



44.2 









10.00 a. m. 

 10.05 a. m. 



41.0 

 42.0 







45.5 





Falls down in lethal condition, taken 













into room, died 10.40 a. m. (Rec- 













tal temperature 41°. ) 











Oct. 19 



Black dog, tracheotomized Oct. 17, 

 1910. In animal house. Exposed 

 to sun 9.25 a. m. 



Falls down at 10.10 a. m.; taken into 

 room until 10.30 a. m.; exposed to 

 sun again. Taken Into room at 

 11.15 a. m.; recovers. 



9.00 a. m. 



9.55 a. m. 

 10.10 a. m. 

 11.00 a, m. 

 11.15 a. m. 

 12.30 p. m. 



38.3 

 40.7 

 41.7 

 41.9 

 42.8 

 38.0 



38.0 

 42.9 

 42.9 

 42.5 

 37.9 

 37.5 



49° at 11 a. m. 



Oct. 21 



Same dog from Oct. 18, 1910. In ani- 



8.30 a. m. 



38.0 



37.0 



45°.6atlla.m. 





mal house. Exposed to sun 8.45 



9.15 a. m. 



40.0 



41.0 







a. m. 



[ 9.50 a. m. 



44.2 



f 44.5 

 1 died. 





Tracheotomized rabbits, while inside of a room, act normally, but 

 if they are exposed to the sun they die, the body temperature rising more 

 rapidly than with normal rabbits. 



The post-mortem findings in the dogs and rabbits which died were : 

 Hyperaemia and a certain number of small haemorrhages in the sub- 

 cutaneous tissues, hyperemia of all internal organs, especially of the 

 brain and the meninges. Several punctiform and linear haemorrhages 

 could be seen on the surface of the brain, as well as on the dura mater. 



I have attempted roughly to estimate from the loss in weight the 

 relative quantities of water evaporated by rabbits in the sun and in the 

 shade. I collected the faeces, urine, and saliva excreted and deducted 

 this amount from the loss in weight of the animal. Of course, the 

 figures obtained in this way are not exact, the carbon dioxide excretion 

 not being taken into consideration, but a comparison between two 

 animals otherwise under the same conditions gives an approximate idea 

 of the loss of water. The calculations are given in Table IV. 



