216 Humbert. 
available food supply is larger than under the other set of conditions, 
and it seems proper to consider the different factors collectively as 
having direct bearing upon the available food supply. 
It is quite possible that the transplanting process affected those 
plants put out on the Mitchell Farm differently from those put out 
on the Plant Breeding Garden. The difference in moisture and 
temperature conditions between soils rich and poor in organic matter 
is considerable. For this reason the results here reported may not 
be comparable with other results where the plants used were not 
transplanted. However, observation at the time of transplanting did 
not reveal any striking difference in the behavior of the plants on 
the different plots. The plants started off nicely in each case but 
grew faster in the Plant Breeding Garden than on the Mitchell 
Farm Plot. 
The experimental data reported here is not exhaustive nor the 
results necessarily conclusive, yet there is certainly an indication that 
with Silene noctiflora under the conditions maintained during this 
experiment, increase in the food supply has decreased rather than 
increased variability. 
Correlation Tables. 
Table x3. 
an 9 (neue 42) nm © oO 
I 
nm © aa in 0 -_ 
an rf m i i 
\ I at Ge el es. |] 
a a a nn nm f 
I 2 3 
De eto 04s A | SO 
oe 7 || 
— 3.20 OF 22° 237047, 
— — 31922 9 1154 
— a | [SS 
SD ET | 6 
(6) 
ar NICO 2 OTL09 DNS 
sas a oO A ~ 
Correlation in 250—14a. 
Height = Subject. 
Width = Relative. 
T= -353 + -042. 
