330 



The Mechanism of Evolution in Lbptinotahsa 



14- 

 18- 

 24- 

 12- 



9- 



'31- 



ga- 

 le-- 



42- 



m 





(^ — 11 



46 



31. 



55 



61 



74 



177 



51 



42. 



14 



31 



19--^ 



15— I 



20 



31 



42 



14 



14 



19 



11 





^ 



-96 

 '211 



'45 



4 9 16 5 7 



Population 850, First Generation. Popnlation 901, Second Generation. 



Fia. 149. — Census showing conditions In tbe first and second generations in 

 1907 at Chapultepec test colony. 



4 5 



n— — ^ 



21 



44 



46 



71 



^^-9 

 — 5 



7 



--46 

 -•83 

 —92 



--77 



/^ ^— 



43 



7 4 11 



Population 697, First Generation. 



15-1^ 



6— I 



8 



1 



42 ^j 



6 1^ 



7 .^ 



14 



5 



31 



-1 



4 



— 17 

 — 42 



—86 

 — 51 



4 



— 7 



S 8 



Population 370, Second Generation. 



FiQ. 150. — Census showing conditions in first and second generations in 1908 

 at Chapultepec test colony. 



