III. 6 



ATMOSPHERIC PRESSURE 



113 



excreted by the undeveloped though incubated egg in pure 

 oxygen is, however, less than in air. 



TABLE XV 



Showing the oxygen absorbed and carbon dioxide excreted by the Hen's 

 egg during incubation. (After Pott and Preyer, from Preyer, Spez. 

 Phys.) 



* Pulmonary respiration begins. 



According to Samassa and Rauber the development of the 

 Frog's egg in pure oxygen is normal, but Godlewski states, as 



JESKIXSON 



