330 NATURAL CROSS-FERTILIZATION IN INDIA. 



seed will greatly limit crossing in the Districts. In other crops, 

 however, where crossing is more frequent, the improved seed, even 

 if kept pure on the seed farms, will soon lose its qualities through 

 vicinism when grown by the people. Unless some co-operative 

 arrangement can be devised and put into practice by which an 

 improved variety entirely replaces the old in a locality, the good 

 done by seed distribution in such crops can easily be exaggerated. 



PusA, 

 March 1910. 



Note added. — While this paper was passing through the press 

 a large number of single plant cultures of til {Sesamum indicum, 

 L.) and of niger {Guizotia ahyssinica, L.) have been grown at Pusa. 

 In both these crops natural cross-fertilization has been found to 

 occur to a considerable extent the details of which will be published 

 in a subsequent paper. 



Pusa, 

 Oct. nth, 1910. 



