A quantitative Study of Variation, Natural and Induced, etc. 203 
The progeny of mother plant 250—16 is not representative of 
the characters of that plant, but two types are produced which may 
or may not breed true to type. This remains to be tested out by 
further experiments. 
om -O = 250-148 
OQer----- ) = 250—16a 
+ = 250— 203 
The fact was previously stated in this paper that a certain 
striking variation was found, both in lines from treated capsules and 
in a line from an untreated capsule. Figures 9, 10, and II are 
inserted to illustrate this variation or mutation. 
