96 



GROWTH OF PARTS AND ORGANS 



50 



100 



150 



200 



250 



300 



350 



400 



Chart 15 Showing the weight of lungs of the male albino rat according to 

 body weight. The observed weights are represented by 90 male rats. Table 70, 

 formula (18). 



Observed weight. Calculated weight. 



formula (18). No sex difference has been noted but the graph 

 is based on male data alone. Hatai ('13); Jackson ('13). 



Weight of the total blood on body weight. Technic: The 

 observations on this relation were made by Chisolm '11 on Al- 

 binos and pied rats. His methods are given in the paper cited 

 above (pp. 207-208) and depend on determinations of the oxygen 

 capacity. Chisolm's formulas have been revised by Hatai 

 (MS '14). The graph in chart 16 and the values in table 70 have 



WEIGHT Of BLOOP 



- 



Chart 16 Giving weight of total blood on body weight. Males, females. 

 Formulas (20), (20 a), and (20b), table 70. 



