STUDIES IX THE EXPERIMENTAL AXALYSIS OF SEX. 601 



Experiment No. 1.— Xo. of Tiird, 1; AVliire Leghorn, 

 2 veai'.s old. 



Date. 



March 4 

 i 

 14 

 18 

 22 

 24 

 25 



30 



April 2 



3 



4 



6 



Comb 

 measure- 

 ment ill 

 millimetres. 



X 2o 

 X 25 

 X 25 

 X 29 

 X 28 

 X 30 

 X 30 

 X 34 

 X 34 

 X 37 

 X 37 



March 7th the l>ird 



was very nnwell. 



too weak to pei-ch, 



and anseniic in 



— Fertile normal egg. 



