O'" THE 



Henry H. Donaldson 



vr 



TABLE I 



Containing thirty-four records from bullfrogs (based on Table VII, Donaldson, 1898). This table 

 shows in successive columns the original tabular number, the sex, body-weight, length, and the 

 observed and calculated weights of the central nervous system in milligrams. The last two col- 

 umns show the percentage deviation of the calculated from the observed weights of the central 

 nervous system; the percentages being computed on the observed values as the standard. 



Difference, 1 milligram; percentage, 0.4. 

 21 



