252 Groom.—Remarks on the Oecology of Coniferae. 
BEECH ( continued). 
Specimen Number. 
Minutes of 
Immersion. 
Duration in 
minutes of period 
of passage of eo sin 
together with 
allowance time. 
Distance covered 
by eosin in cm. 
Date of ascent of 
eosin in cm. per 
hour. 
6 
45 
8-5+ 1 
8-5+ 2 
22.5 
y 
27-5 
142 
T 57 
This shoot was forked and bore 
foliage only towards the ends of the two 
arms. The first measurement is given 
first; probably a larger time allowance 
should be made for the second. 
Set II 
Warm, 
\ sunny, 
breezy 
July 
morning. 
7 
175 
4 + 3*5 
29 
232 
This main stem gave off a number of 
dwarf foliaged shoots, and the eosin 
was carried past six of these. The time 
allowance is so ample that the rate per 
hour is probably considerably below 
the real speed. 
8 
9 ° 
6 + 1 
H 
120 
Shoot was about 52 cm. long. 1 
Set IV 
Warm, 
9 
140 
4-5 + 1 
8*5 
93 
The shoot was branched and the 
eosin had gone up past one foliaged 
little branch, but scarcely entered this. 
__ moderately 
" bright, 
rather 
breezy. 
RATE OF ASCENT OF EOSIN IN CENTIMETRES PER HOUR. 
(On same horizontal line the experiments synchronize in time 
to within fifteen minutes.) 
Silver 
Dir. 
Scots 
Pine. 
Larch. 
Beech. 
72-5 
65 
177 
(110 + ) 
38-5 
75 
77 
( 42-5 + ) 
223 + 
134 
162 
no 
Set I (July). 
Morning : hot, sunny; fresh breeze 
blowing : shoots exposed in the open 
j to direct sunlight. 
Afternoon : cooler (though warm), 
a gentle breeze blowing, not so sunny : 
plants exposed to full light. 
60 
142 
204 
240 
240 
32 
47 
175 
(24-) 
I 4 2 (i 57 ) 
232 
\ 
Set II (July). 
Warm sunny morning with a breeze. 
y Shoots exposed to direct sunlight. 
1 
37-5 
32-5 or 35 
(108 + ) 
54-5 
(120 + ) ) 
120 ) 
35 } 
30 i 
82-15 
99 } 
113 ) 
56 
135 
81 
75 or 64 
120 
93 
Set III (July). 
j Morning: sunny, with a breeze. 
) Afternoon : not so sunny as in the 
Vmorning, yet warm: stronger breeze 
j than in the morning. 
