374 



IIARVKY M. SMITH. 



TABLE VIII. 



AVERAGES OF RED BLOOD CELL MEASUREMENTS AND CARBON DIOXIDE 



OUTPUT BY AMPHIBIA. 



Jfc 



ia 



or 



ov 



CHART 4. Cell size and carbon dioxide output in Amphibia. Abscissa, area 

 of red blood cells in hundreds of square micra; ordinate, COz in milligrams per 

 gram of weight per hour. Curve based on circles represents the averages taken 

 from Table VIII.; curve bases on X represents the individuals recorded in Table IX. 



individuals have been recorded separately in Table IX. On 

 Chart 4 are plotted two curves, one based on Table VIII., 

 showing the general upward trend of carbon dioxide output with 

 decreasing cell size, but obviously complicated by the weight 

 factor; the other based on Table IX., showing the even curve 

 which is obtained when weight variations are eliminated. 



