IN THE TROPICS. 
405 
out so as to have a smooth surface ; with the exception of a slight 
dimple on each side, such as was often observed in c ‘ round 7 7 seeds 
grown in Ceylon. The seeds were sown on May 2, and 3 plants 
bearing seeds were taken up on July 27. The length of life of these 
plants was therefore intermediate, but nearer to that of Satisfaction. 
The following table shows some of the characters of these plants :— 
No. of 
Cross. 
Height. 
Nodes. 
' 
Pods. 
Seeds. 
Width of 
Pod in mm. 
Seeds. 
Dimpled. 
Wrinkled. 
440 
70 
31 
4 
8 
14 
8 
439 
75 
30 
| 5 
15 
14 
12 
3 
441.1 
79 
31 
! 2 
5 
15 
5 
— 
441.2 
74 
31 
4 
, 
8 
14 
1 
6 
2 
None of the plants produced any branches. The average length of 
an internode was 2*4 in. (6T cm.), greatly exceeding that character- 
istic of either parent. The number of internodes was practically the 
same as in Satisfaction, but the plants were much taller. Width of 
pod was intermediate. 
As regards the shape of the seeds we have some interesting points 
to consider, for all were more or less wrinkled. There were con¬ 
siderable differences in the degree of wrinkling, and in the case of two 
plants it was possible to distinguish between a group of very wrinkled 
seeds (5 in number) and a remaining group of 18 to which the term 
dimpled might better be applied. I could not satisfy myself that 
there were any of the truly wrinkled group upon the other tw& plants. 
The phenomenon is in agreement with a case described by 
Tschermak, who crossed a smooth coloured-coated pea with a 
smooth white-coated pea andin F x (of seed-coat—F 2 of cotyledons) 
obtained exclusively ‘ ‘ slightly wrinkled 7 7 seeds. It appears that 
as a rule the dimpled character is correlated with the coloured coat, 
and in the present case this correlation would seem to have become 
restored as the result of the cross. My example is complicated by 
the fact that the white-coated pea used was wrinkled, so that in F 1 
of seed-coat and F 2 of cotyledons there is expected a proportion of 
8(9)05 (7) 
