70S 



THE PHYSIOLOGY OF REPRODUCTION 



Murray/ who has investigated the laws of growth in various 

 animals, finds that whereas the growth of sheep, rabbits, and chickens 

 appears to conform to a general principle which may be expressed as 

 a simple formula, and represented in a simple curve, with cattle 



Fig. 178. — (From Minot's Problem of Age, Growth, and Death, 

 G. S. Putnam & Sons, and John Murray.) 



thei:e is evidence of an acceleration in the rate of growth between 

 the first and second year, similar to the prepubertal acceleration in 

 man described below and shown in the diagram (Fig. 182). Murray 



1 Murray, "Normal Growth in Animals," Jov/r. of Agric. Science-, vol. xi., 

 1921. 



