90 RESPIRATORY EXCHANGE OF ANIMALS AND MAN 



TABLE XIII. RELATIVE O 2 ABSORPTION OF MARINE ANIMALS. 



Very remarkable results have been obtained on bees by 

 Marie Parhon. She made experiments on large numbers of bees 

 in a small Regnault apparatus. The results of a series of experiments 

 made in summer at different temperatures are summarized in the curve, 



Litres 2 per kg and hour 



Litres 2 per kg and hour 



FIG. 26. 

 Respiratory exchange and temperature. After M. Parhon. 



fig. 25, which is to be compared with fig. 26, showing the results ob- 

 tained on flies. While the curve for the flies is about normal l for a 

 cold-blooded animal, and does not differ very much from that obtained 

 by Battelli and Stern, that for the bees shows a maximum exchange at 

 10 2 and a more or less regular decrease at higher temperatures. This 



1 That the oxygen absorption is found to be o up to a temperature of 10 is undoubtedly 

 abnormal and due to experimental errors. 



2 This temperature is that of the water-bath surrounding the Regnault apparatus. 

 The temperature in the respiration chamber was always higher (15-1 against 10 in the 

 water) and of course the temperature of the bees must have been higher still. 



