30 
Francis Darwin 
STUDIES IN PHRENOLOGY, No. 2, 1920. 
By FRANCIS DARWIN. 
T his paper is a continuation of my “Phaenological Study” pub¬ 
lished in Nos. 9 and io of The New Phytologist, 18 , November 
and December, 1919. 
All my earlier observations (1917, 1918 and 1919) were made at 
Brookthorpe near Gloucester. The present series is indeed based 
principally on observations in that locality, but it also includes 
observations made at Cambridge and in the heathy country near 
Gomshall in Surrey. 
The record of temperatures, which is the principal condition 
affecting the date of flowering, is (as in my former paper) taken 
from the “Weekly Weather Reports of the Meteorological Office.” 
For the Gloucestershire observations I have taken the temperatures 
at Clifton, the observational centre nearest to Brookthorpe. For 
the Surrey observations I have taken the Wisley temperatures. For 
those in Cambridgeshire the temperatures at Cambridge. 
Table I 
Temperature from “Weekly Weather Report of the 
Meteorological Office,” 1920. 
Week 
no. 
Week 
ending 
Mean 
temp. F. 
Deviation 
from 
normal 
Week 
no. 
Week 
ending 
Mean 
temp. F. 
Deviation 
from 
normal 
r 
Jan. 10 
387 
4 -i-i 
18 
May 8 
49*9 
- o-6 
2 
*7 
45 *i 
+ 7’9 
19 
15 
53*6 
4 - 1-4 
3 
24 
43-9 
+ 6-3 
20 
22 
52-8 
- 1-0 
4 
3 i 
42-0 
+ 3*7 
21 
29 
61-9 
4 - 6-8 
5 
Feb. 7 
4 i -5 
+ 2-6 
22 
June 5 
57"4 
4-0-2 
6 
14 
44-6 
+ 5*8 
23 
12 
56-4 
-1-8 
7 
21 
43-5 
+ 4'5 
24 
19 
6o-o 
4 - 2-0 
8 
28 
391 
-0-2 
25 
26 
6 i-i 
4-1-5 
9 
Mar. 6 
443 
+ 4-6 
26 
July 3 
61-2 
-0-2 
10 
13 
39-8 
- 0-7 
27 
10 
56-9 
- 5-0 
11 
20 
43-9 
+ 2-3 
28 
17 
59*2 
- 3 -o 
12 
27 
48-9 
+ 6-8 
29 
24 
59-5 
- 3 -i 
13 
Apr. 3 
48-1 
+ 37 
30 
31 
57'3 
- 4-9 
14 
10 
(No re 
cord) 
3 i 
Aug. 7 
57 'i 
“ 5*4 
15 
I 7 
49-2 
+ 2*7 
32 
14 
59-4 
—1-6 
16 
24 
48-8 
+ 1-0 
33 
21 
56-8 
- 3-8 
I 7 
May 1 
47-9 
- i-6 
34 
28 
54-7 
- 5‘4 
