A Contribution to Vegetable Teratology. 206 
very soon see a shallow channel appearing at its right hand border: 
this channel very quickly travels towards the middle of the valve, 
and, as it proceeds thence to the free end of the valve, it becomes 
gradually deeper and its sides gradually steeper until, at the very 
end, the two sides of the valley part, and end in separate points. 
At its basal end the whole pod may therefore.be said to be triple, 
at its free end, on the other hand, quadruple. 
The abnormality is not inherited. The abnormal pod, which 
was borne on the 14th 1 node of the plant, contained two seeds; 
these, together with seeds from all the other pods borne by the 
plant (viz: pods borne at nodes 13, 15, 16 and 17) were sown. 
They gave rise to 16 plants which bore 215 pods, all of which were 
normal. Details concerning the offspring of the plant bearing the 
abnormal pod are given in the accompanying Table. 
1 The point of attachment of the cotyledons is counted as the 
first node. 
Node of 
Parent Plant. 
• Number of 
seeds in pod at 
that node. 
Number of 
seeds sown. 
Number of 
plants produced 
Number of pods 
on individual 
plants, a, b, c, 
etc. 
f a. 
13 
13 
4 
4 
3 
b. 
10 
1 c. 
10 
14 f 
2 
2 
1 
a. 
12 
( a. 
25 
15 
5 
3 
3 
b. 
15 
1 c. 
14 
l' a - 
6 
16 
8 
4 
4 
b. 
9 
c. 
13 
d. 
5 
( a * 
20 
b. 
18 
17 
6 
5 
5 
• c. 
15 
d. 
7 
V e- 
23 
25 
18 
16 
215 
f The abnormal pod. 
R. Madley, Printer, 151, Whitfield Street, London, 
