250 Groom.—Remarks on the O ecology of Coniferae. 
LARCH {conturned). 
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Duratio, 
inutes of 
passage c 
together 
llowance 
Hstance c 
y eosin i 
ate of as < 
>sin in cr 
hour 
£ V <3 
8 S' 
11 
80 
3 + J -5 
17-5 
233 
This shoot was unbranched, with the 
\ Set II{con- 
y 
foliage confined to the more terminal 
I tinned) 
parts ; the dye had entered the foliaged 
part. The time when the next observa- 
tion was made proves that the lowest 
possible minimum rate of ascent was 
131 cm. per hour. 
The 
12 
I40 
5-5 + 1 
3-5 
32 
shoots 
were 
13 
145 
6 + 1 
5-5 
47 
exposed 
. to direct 
H 
155 
4 + 2 
J 7-5 
J 75 
This measurement records the rate of 
H sunlight 
movement up the leafless part of the 
on a warm 
main stem and of the lowest long 
breezy 
branch among whose foliage the eosin 
July day 
entered. The time of the next observa- 
in the 
tion proves that the lowest possible 
minimum rate of ascent was 126 cm. 
per hour. 
morning. 
15 
160 
6-5+ 1 
3 - 
24- 
The eosin had ascended less than 
3 cm., solely up the leafless basal part 
of this branched shoot. ' 
16 
no 
5 + i 
I 3*5 
135 
Set IV 
17 
120 
n-5+ 1.5 
i 7-5 
81 
This branched shoot was only feebly 
foliaged ; hence the low rate of ascent. 
Plants 
exposed 
to the 
18 
6 (or 7) 
There was an uncertainty as to the 
sun in an 
153 
7-5 
75 (or 
afternoon 
64) 
exact time ot commencing the experi-\ 
y that was 
ment, as it may have been initiated 
one minute earlier than recorded in my 
notes. This shoot had been blown 
moderately 
bright, 
and with a 
over, so that it did not dip in the eosin 
during the whole of the time. 
consider¬ 
able breeze 
blowing. 
SILVER FIR. 
1 
170 
16-25 + 2 
18-25 
60 
A branched well foliaged 
shoot. The eosin had ascended 
the main leafless stem past 
one foliaged branch. j 
1 Exposed to full 
sunlight on warm, 
^ sunny, breezy, 
July midday. 
2 
12 5 
11 + 1 
7-5 
37-5 
Shoot about 45 cm. long. 
3 
J 54 
12 (or 11) 
6 -5 
32-5 (or 
35 ) 
Shoot well foliaged, 50 cm. long. 
But the apparatus was blown over in 
the course of the experiment, so that 
the shoot was not dipping in the eosin 
throughout the whole time. 
