20 BOTANICAL GAZETTE [JANUARY 
same side, about 5 per cent. more than when they were on opposite 
sides. It is possible that the gash in some cases was near enough 4 
to the receptive part to give a slight stimulus, whose effect was, — 
added to that of the brand. Of the two lots marked “control” 
which were gashed, but not branded, one of the five showeda — 
distinct but not great curve away from cut side, and in the lot of ~ 
eight the one that curved away from the cut had the cut only 2™™ 4 
from tip. 
TABLE III. 
ROOTS GASHED IN CORTEX ONLY. 
Branded on gashed side bags one — not 
Date ad 
Distance of gash from tip! Roots used | Roots curved! Roots used | Roots curved g 
Noy. 10 5 4 4 I 
. 2n= 7 I 5 fe) 
7 25-3" 3 3 3 14 
12 were 8 6 8 1? 
32 19 20 3 
In these experiments, where a large part of the cortex and — 
all the axial cylinder were left intact, 59.3 per cent. of the roots — : 
curved both above and below the gash. Taking from the three 
tables all the control roots that were gashed, but not branded, we 
have a total of forty-one roots, of which six showed a curve away 
from the cut. In a few of these cases it was somewhat doubtful 
whether the curve was really the effect of the wound or simply 
a spontaneous curve. But, considering them as due to the cut, 
we have 14.6 per cent. curving from the effect of the cut. This 
is a greater difference than is indicated by the two sets of 
experiments where effects of the cut and the effects of the brand 
worked with each other in one set and against each other in 
the other set. 
