20 Journal of the Asiatic Society of Bengal. [January, 1908. ] 
render it impossible to i types pure when they are grown in 
the proximity of other types. During the present season the off- 
certain cases, the parent was itself impure. In other, and not a 
few cases, however, the variability was as certainly the direct 
result of natural eros crossing. 
LITERATURE. 
. bar Sir G. - pene of the Economic Products of 
. ticle ssyprum 
2. Middleton, ee ay. oe The Agricultural ah ” 1895, No. 8. 
3. Gammie, G, A. ‘“ The Indian Cotto 
4. Gammie, G. A. ‘ Memoirs of the Drapiactiaed of Agricul- 
ure in India,” Volume ii, No. 2, 
5. Burkill, I.H. “ Journal and Proceedings,” Asiatic Society 
of Bengal (new series), Volume 3, No. 7, page 517. 
See a eee eee 
