VIII 



Total 



1V5 



141 



Thirty-five of these plants were grown on to F3, but 

 their families were not sufficiently large. One notable 

 feature was that an " Fj type " plant gave thirteen off- 

 spring like itself, and no other forms. Other similar 

 plants threw the glabrous type only, while others again 

 behaved like the Fi itself. Some of the differences 

 which had been recorded between the F2 plants seemed 

 to be due to fluctuation, but the general trend of the 

 evidence is to the same conclusion as in the characters 

 already discussed, namely, gametic complexity, possibly 

 with length and density as component factors. 



It should be added that families of fifty plants have 

 been grown in F5, which bred true to new types of 

 hirsuteness, such as the felty class described above " like 

 Upland, but shorter." 



Since the hirsuteness, or rather the glabrousness, of all 

 Egyptians is practically the same, we have no data for 

 simpler crosses. It might be well to investigate the 

 character in a cross of glabrous Hindi with hirsute 

 Hindi. 



The stipule. — During examination of Afifi x Sultani 

 Fi it was noticed* that the form of the stipule was 

 very different in the two parents. The Sultani parent 

 had long narrow stipules, while the stipules of the Afifi 

 parent were about four times as wide for the same length. 



The Fi stipule was long and narrow like the Sultani 

 parent. 



* By Mr. F. S. Holton. 



