CELL SIZE AND METABOLIC ACTIVITY IX AMPHIBIA. 367 



TABLE V. 



Xetturi ARRANGED ACCORDING TO WEIGHT TO Snow VARIATION OF CARBON 

 DIOXIDE PRODUCTION WITH VARIATION IN WEIGHT. 



.11 



.10 



.Ob 



.03. 







; 



100 



120 



ItO 



ISO 



200 



i ii vk i .'. Influi-iii i- "i weight on carbon dioxide output in \fitnru*. Abscissa. 

 .it in i;i.im-: "t'lmute. CO; in milligrams per grain ni l><xlv ux-iglit [K-r hour, 

 Q - h -males. Q males, O sex not determined. 



Tin- icrnri.il trend is evident from Table V., luu -\i < -piimis are 



;il><> i-\idi-nt. Nos. iS. 13, 15, 17. and II arc- hi<lu-r than would 

 be i-\pri-trd from tlu-ir weight, while Nos. 2, 6, 14, and 8 are 

 l"\\rr. Tin- lii^li yroup contains only animal^ on which one or 

 tun * atlu.n <lio\idi- output tests could be miide before the animal 

 dird. Tlu' raiiM- of death in all these aniniaU wa- probably 

 >tar\aiiMn. tin- re U'iiu no pathological >\ niptoms as far as could 

 be dru-rmiiK'd. A more detailed discussion of starvation as a 

 complicating factor will be found below. It is morr difficult to 



