4 
ee 1907.| Wrinkled Peas, and their resultant Starch-grains. 13k 
In the case of one plant, only one of the five seeds examined exhibited 
‘them. In the case of two other plants, two out of the five seeds exhibited 
them, and in the case of both these plants the five seeds had been noted,. 
before soaking, as being only rather wrinkled. 
Fie. 7,—Example of occasional p-grain occurring, in extracted Wrinkled Pea in F;. 
The details of the grains and parentage of the wrinkled seeds are shown in: 
Table IV. 
Table IV. 
Number and characters of ' 
seeds borne by parent-plant. stein i Nature of starch-grains in each 
Catalogue- Sy caadks ¢ of these seeds. 
ee ee Colour. Shape. examined 
P aa for starch- 
grains. | 
x G. R. W. eae 2 il. iii. iv. v. 
| | ai 
54, 38 24 7 82 | 5 wr. ¢ BoP ce ¢ c 
54. 55 30 8 38 is c Gy ee c c 
54. 59 18 3 21 | Me e en a c c 
54, 61 19 2 21 | p C Chen ene ¢ C 
54. 66 2g 3 30 | fa c ON Ge c c 
54. 87 16 3 19 c CN ae c c 
54. 97 32 12 41 | 5yratherwr.|  ¢ csp csp c c 
54.118 | 14 3 ile 5 wr. C c ce c c 
Bata7 | 1d 8 19 . c On eae c c 
54.138 _ 80 15 45, c CA Xe c c 
54.140 | 24 6 30 ie e c | c c c 
54,187 | 13 a 20 | Srather wr.| ec esp | e ce sp c 
| 
e = compound grains. 
sp = some p-grains. 
The Amount of Water absorbed by the Seed on germination in the Various 
Generations in the Preceding Experiment. 
Gregory’s statement that, according to Denaiffe, “ wrinkled seeds take up. 
more water on germination than do round seeds,” made me curious to find 
a out how much more water wrinkled seeds take up than round; and, having: 
| determined this, to find out what relation the hybrid bore to its two parents 
q with regard to this character. 
I propose to refer to the capacity for taking up water as the absorptive 
capacity ; and the measure which I shall use throughout of this capacity is- 
