370 



HAKVKY M. SMITH. 



TABLE VI. 



EFFECT OF STARVATION ON CARBON DIOXIDE OUTPUT OF Nccturus. 



Results on other species are less conclusive regarding the effect 

 of starvation. Extensive determinations were made on Rana 

 pipiens with this idea in mind. No changes were noted which 

 could be directly attributed to starvation, except that the extreme 

 inanition previously noted in No. 2 was accompanied by a 

 decided drop in carbon dioxide output at the end. No Nectnri 

 were carried as far as this. In Rana palustris the animals used 

 when near death from starvation showed a much lower carbon 

 dioxide output value than normal starving individuals (about 

 0.1660 as compared to 0.2730). In Rana clamitans the starved 

 individual gave a lower result than the one less starved. With 

 Amphiuma No. 2, the carbon dioxide elimination decreased with 

 the weight. It seems, then, that in all species studied except 

 Necturus starvation resulted in decreased carbon dioxide output 

 per unit weight, but evidence is offered to show that the opposite 

 is true of this species. 



3. Reference to Table VI. will show that there are rather 

 large daily fluctuations in the carbon dioxide output of Necturus. 

 Daily records for individuals of other species show the same sort 

 of variation. Tin- possibility is not eliminated that these fluctua- 



