710 



THE RESPIRATION AND 



[PT. Ill 



muscular work. Lussana himself thought that the new environment 

 into which the chick enters at hatching had perhaps a stimulatory 

 effect on all the organs of the body, and so led to increased carbo- 

 hydrate utilisation. 



Investigations of the same type as those of Bohr & Hasselbalch 

 were afterwards carried out by Lamson & Edmond, by Atwood & 



50 100 )50 200 250 300 350 400 450 500 



Parts carbon dioxide in 10,000 



Fig. 150. 



Weakley, by Murray and by Hanan. Lamson & Edmond's work 

 was mostly concerned with the efficiency of incubators from a 

 respiratory point of \dew, and they dealt with the optimum con- 

 centration of carbon dioxide in the circulating air. They also ob- 

 tained some interesting results by analysing the air under sitting 

 hens, leading off samples for analysis by means of a perforated 

 dummy egg connected to a pipe. They found that the air under 

 sitting hens does not get much richer in carbon dioxide if china eggs 



J 



