12 



Genetic Shtdies m Babbits 



mature early, e.g. Q 75 which reached 4 lbs. 8 oz. in 8 months ; while on 

 the other hand a small rabbit may mature late, e.g. QIS which took 

 12 months to reach the weight of 3 lbs. 12 oz. 



That early maturity is to some extent independent of size is an 

 inference borne out by the results of the Flemish-mixed cross. The 

 distribution of the ages of maturity in relation to weight for three 



montnt 



Fig. 9. 



1 1 \ 1 1 1 1 1 1 r 



3 4 5 6 7 8 9 10 n 12 13 



Growth curves for 3 F^ animals from Flemish-Polish cross. (Cf. Table V, p. 25. 



1 

 14 



. I llii 



8 9 10 n 12 13 

 4..2^2 4..4 4..4 4..11 4..6 5.-1^ 



Fig. 10. Shewing distribution of weight in relation 

 to age of maturity in Fo, animals from Flemish- 

 Polish cross. (Cf. Table V, p. 25.) 



