

Vol. IV, No. 1.) Haperimental Breeding of Indian Cottons. 17 
[N.S.] 
are given the number of plants found for each value of the leaf- 
factor calculated to the first decimal place. The leaf-factors 
of the parents were not determined and they were roughly divided 
according as the leaf appeared to the eye ‘broad ’- or ‘ narrow ’- 
lobed. The following table gives the range in the value of the 
leaf-factor in the offspring of each parent :— 

L | of | EXTREMES OF 



. | 
Serial | Recorded factor offspring, 7 Lmay-Facron. — 
Ne Type. Leaf type (average | used in Fe IE \off 
; of parent. | of off- |determi- yorery | Mini- 'p a ts 
| | spring.) | nation. | mum. | an ee 
| | | | | | 
1 | indicum |‘brosf-tbed} 166) 16 | 192). 149 oe * 
2 ps a4) Se 34 POY) S47 lm ee 
3 | neglectum 3 | 1°68 | 20 180 | 1:56 | 35 
4 . te Ler 2B | 20 194 173 | 49 
5 t ce ae So es oa ee ee ne 
6 a a 173 15 | | 1:53 16 
7 Re E 181 20 | 1:98 1°69 64 
8 5 A 178| 20 | 194) Ler] a0 
9 a ” 1:80 16 |; 199 1°62 16 
10 - a 1:90 9 205 1°67 9 
ll os ¥ 1°76 16 | 198 1°63 17 
12 | indicum a 1°46 20 E7t 1°27 38 
13 | neglectum |‘narrow’- lobed 3°64 20 £418 3:18 74 
‘ 3°59 2 | 364| 3°55 2 
15 re = 3°35 18 3°83 2°96 44 
16 y % 4°00 20 4°55 3°39 20 
17 ” is 416 20 4°34 3°80 37 
18 : 378 20 420 | 346 37 
19 » 8 ie ; 8-40 1°44 36 





* When the number of offspring raised exceeds the number used in deter- 
fovenprnd it has been ascertained that none of those excluded exceeded the 
given limits, 
When the two sections of the above diagram are amalgamated, 
itis observable that the plants raised by self-fertilization form 
are uninterrupted series, in which plants with every value of con 
actor from 1:°2—4°5 occur. From the table, however, as 
from the two sections of the diagram, it is evident that, with che 
single exception of serial No. 19, all the parents examined pro- 
duced, by self-fertilization, offspring possessing a leaf-factor falling 
within the limits given a above for the t type to which the parent be- 
bariam specimen of this plant which has been preserved, the leaf- 
factor has been calculated and found to be 2°40. T 
factor was, therefore, in reality intermediate. Now it has already 
been shown that the F, generation of a cross possesses a leaf- 
