A Fat 
ert eae a 

Vol. IV, No, 1.] Eaperimental Breeding of Indian Cottons. 19 
[N.S.] 
factor was undoubtedly intermediate. The offspring for which the 
leaf-factor has been determined can be arranged in a series of 
which the limiting values for the leaf-factor are 3:47 and 1°26; 
in other words, among the offspring there occur both plants with 
typical ‘ broad ’-lobed leaves and plant, with typical ‘narrow ’- 
lobed leaves. The intermediate types have, on self-fertilization, 
again split up, and their offspring include, in addition to inter- 
mediate forms, both extreme types. No offspring have, so far, 
been raised from a known definitely to have possessed an 
extreme leaf-factor. 
er gave flowers with red petals—this colour varying, how- 
ever, from the pure red of G. arborewm to the red upon a yellow 
ground of the parent. In the third generation complications have 
arisen, In all cases the parents of this generation bore flowers 
ai the petals red upon a yellow ground. They may be tabulated 





' Frower Coroocr. 
Parent | 
; Red on 
Yellow | White. Red | Red on yellow. white 
1 8 + | 8 
2 ae 6 ¥ 
3 ae 1 13 a 
+ 1 | | 1 
| a AEE Te) = 
Tera, 4c 15 | 1 10 29 . 



Other characters, each as the leaf glands, stigmatic 
glands, colour of cotton etc., have been recorded, and all 
show similar variation. It is impossible to arrive at other conelu- 
sion, then, that plants, such as the above, are the product of natural 
crossing. In the present case one parent is undoubtedly G. arbo- 
reum, the other parent is doubtful. The occurrence of two similar 
plants from the same sample would indicate that the parent was 
the direct product of a cross between two plants of which G. arbo- 
reum vin the seed parent, but of which the pollen parent remains 
doubtf 
It is as yet impossible to state with  , to what extent 
cross-fertilization takes place. The evidence so far obtained 
indicates that natural crossing occurs with ‘dalliciant frequency to 
