﻿STARVATION AND SEX-EATIO 



19 



2. Starvation does not result in a greater mortality of one sex 

 during development. This is probable because the sex-ratio re- 

 mained the same whether there was an enormous mortality as the 

 result of starvation or a relatively slight mortality when an abun- 

 dance of food was supplied. 



TABLE I.— History of strain No. 1. 



Generation. 



Five Pairs. 



Total Indivi'iuols 

 Counttd. 



S^x- Ratio. 

 Mnlefi : temaJes. 



First 



Second 



12 



1 : 1.U7 

 (201 : 216) 



1 :1 



(6:6) 



Third 



Fourth 



Fifth 



170 



243 



1 : 1.26 



(75 :95) 



1 : 1.13 

 (114:129) 



1 : 1.25 



(32:40) 



Sixth 



F S 



1009 



1:1.06 

 (491 :518 



Seventh 



207 



1 : .85 

 (112 



Eighth 



31 



1 : 1.07 



(15 : 16) 



Xinth F S 



Total 



(Xot counted) 

 2161 



1 : 1.07 

 (1046:1115) 



4-23929 



