BODY WEIGHT — TAIL LENGTH 161 



(100 Bd. 7.-1.1 Bd M+13400 



Body weight {male) = 10 1430 ° - 15 



Transpose 15 from right hand side to the left and take the 

 logarithm of both sides. We have 



7 raj * L irn ; mv^ 00 x 150 - U X 15 °) + 13 400 

 log (Bd. wt. + 15) = log 10 X : 



14300 



1V 15000-^65 + 13400 



IX = 1.9<4o 



14300 



Thus 1.9745 is equivalent to the logarithm of body weight 

 plus 15. Therefore body weight + 15 = 94.3 (anti-logarithm 

 of 1.9745). Finally, body weight - 94.3 - 15 = 79.3 grams. 



The above procedure is that to be followed with other formulas 

 of the same type. 



Body Weight on Brain Weight (Donaldson, '08) 



Br. wt.— 0.554 



Body weight (sexes combined) =8.7+10 ° ^ (3) 



Tail Length on Body Length. (Hatai, ms '14.) 



Tail length : male = 0.852 Bd. 1. + 38.8 (log Bd. I.) -90.5 (4) 

 Tail length -.--female = 0.874 Bd. I. +43.2 (log Bd. I) - 98.1 (5) 

 Formulas (4) and (5) were used for table 68. 



