Leake and ram Prasad. 41 



not undergo even the partial development that so frequently takes 

 place, but the flower fell inunediately and in toto from the base of 

 the peduncle. An examination of the flowers of this generation 

 disclosed a condition of almost complete sterility of the stamens 

 which were white and shrivelled and rarely liberated pollen. 

 Seven flowers were subsequently fertilised with the pollen gathered 

 from sister plants and of these seven three set and ripened fruit. 

 No detailed note has been kept of the subsequent (1909) generation 

 but thirty-two flowers were protected and from these one hundred 

 and twenty-three seeds (representing some fifteen bolls) were ob- 

 tained. The sterile condition of the anthers, though present, was 

 not such a marked feature of this generation. In 1910 a series 

 consisting of forty plants was covered by a single net and has 

 yielded seven and a half oz. seed. 



In this case continued self-fertilisation appears to have brought 

 about a marked degree of sterility which is, further, associated 

 with the abortion, or incomplete development, of the stamens ; 

 also fertihty has to some degree been restored by crossing between 

 sister plants, but this restoration is partial only and the plants now 

 representing this type exhibit none of that fertility which char- 

 acterised the original plant first selected in 1906. 



Tijpe 6. A form of G. neglect'im, Tod., with white flower and a 



leaf- factor / 2. Two single plant cultures of this type have been 



under continuous cultivation since 1906. Of the original plants 

 ten and twenty flowers were ])rotected and from these six and eleven 

 bolls respectively set. In 1907 eleven and ten fruits set from 

 twenty- two and twenty flowers similarly protected. In 1908 the 

 sterile condition of the anthers above noted as occurring in Type 

 9 made its appearance but was less defined in the first, than in the 

 second, culture. In the latter the condition was as marked as in 

 Type 9. In the former culture, therefore, flowers, eighteen in 

 number, were protected and of these nine set, while in the latter 

 a single flower only was protected and immediately fell. In this 

 case sixteen flowers were fertilised with pollen from sister plants 



