268 
Abstracts of tpie Makerstoun Observations, 1843. 
TABLE VII. — Daily, Weekly, and Monthly Means of the Temperature of Evaporation, as deduced 
from the Nine Daily Readings of the Wet Bulb Thermometer in 1843. 
Civil 
Day. 
Jan. 
Feb. 
March. 
April. 
May. 
June. 
July. 
Aug. 
Sept. 
Oct. 
Nov. 
Dec. 
o 
o 
o 
0 
0 
0 
0 
0 
O 
O 
0 
1 
r i 
[ ] 
38-2 
29-3 
47-5 
43-9 
46-4 
53-2 
53-9 
59-0 
[48-1] 
32- 1 
31-4 
2 
294 
33-4 
30-5 
[43-4] 
41-6 
49-3 
[53-0] 
54-7 
61-9 
47-6 
37-2 
39-9 
3 
29-1 
28-3 
31-4 
44-3 
44-6 
43-3 
55-6 
55-2 
[55'8J 
49-4 
36-5 
[40-7] 
4 
36-5 
32-0 
28-3 
43-3 
46-5 
[45- /J 
52-5 
55-1 
50-2 
53-9 
45-5 
47-3 
5 
32-2 
[33-8] 
[32-6] 
41-7 
40-6 
40-9 
57-7 
51-4 
50-4 
53-6 
[39-6] 
43-4 
6 
35-5 
31-2 
39-7 
43-0 
42-3 
45-7 
54-4 
[55-Oj 
59-6 
55-0 
44-3 
40-1 
7 
37-6 
38-6 
36-7 
42-9 
[43-0] 
48-9 
53-6 
551 
52-8 
51-4 
40-9 
46-8 
8 
[33-6] 
39-6 
29-2 
38-6 
42-3 
50-2 
53-7 
59-1 
54'7 
[4/-o] 
331 
43-1 
9 
34-2 
34-1 
32-6 
[36-0] 
44.4 
49-7 
r- 0 on 
[d3-8J 
53-9 
56-2 
42-6 
31-0 
44-9 
i 10 
31-2 
32-8 
34-7 
30-3 
41-9 
49-9 
C A O 
54-3 
520 
rr e- ern 
[5a-5J 
41-5 
38-0 
44-8 
1 1 
30-8 
33-6 
40-6 
30-1 
43-8 
[48-8] 
52-3 
55-9 
59-4 
41-1 
42-9 
44-7 
[ 12 
23-7 
[29-5] 
[35-8] 
31-2 
46-9 
45-7 
54-6 
57-3 
58-9 
36-7 
[36-7] 
45-0 
13 
33-5 
30-3 
36-8 
32-2 
50-5 
4b'0 
5o- 1 
re- a n"I 
L56-0J 
ei 9 
5 1 -o 
66-U 
38-5 
44-5 
14 
29-1 
23-9 
35-4 
46-7 
r A r til 
[45-3] 
51-4 
54-2 
54-3 
52-6 
33-5 
33-6 
45-9 
15 
[33-7] 
22-2 
34-8 
45-2 
45-3 
52-7 
55-5 
56-8 
56-3 
[33-3] 
36-5 
44-9 
16 
34-5 
23-6 
37-2 
[44-2] 
44-0 
51-7 
[O4-0J 
59-7 
ceo 
on e 
30-0 
35-5 
37-5 
17 
37-7 
24-3 
43-7 
46-7 
41-5 
49-0 
54-3 
61-9 
re a m 
[04-2J 
34-6 
42-9 
[43-0] 
18 
44-0 
17-5 
45-1 
45-4 
39-7 
[50-5] 
54-3 
60-8 
55-4 
31-4 
35-9 
43-2 
19 
44-1 
[28-1] 
[43-0] 
49-2 
39-5 
46-1 
49-9 
61-2 
49-6 
31-8 
[39-2] 
41-5 
j 20 
38-4 
32-2 
40-1 
44-1 
43-5 
50-3 
49-5 
[55-9] 
56-3 
44-2 
39-3 
45-2 
\i _ 
35-0 
44.7 
49-1 
T43-01 
530 
50-7 
49.7 
54-4 
43.4 
41-5 
i 22 
[39-8] 
36-1 
47-0 
46-4 
44.4 
51-0 
53-3 
52-8 
50-7 
[40-1] 
40-0 
46-7 
23 
39-3 
35-6 
45-8 
[43-2] 
46-0 
52-5 
[52-5] 
48-9 
52-6 
46-1 
35-4 
47-8 
24 
43-8 
36-3 
40-9 
41-8 
45-1 
51-2 
49-3 
49-8 
[47-6] 
39-2 
30-7 
[45-0] 
25 
43-2 
33-2 
38-5 
41-0 
47-4 
[49-1] 
530 
53-5 
44-8 
35-7 
30-5 
47-9 
26 
42-8 
[33-2] 
[37-0] 
37-0 
50-1 
48-9 
59-4 
52-5 
42-7 
320 
[38-1] 
44-S 
27 
49-2 
32-7 
31-7 
41-2 
48-2 
46-8 
52-5 
[51-6] 
40-6 
32-8 
46-8 
42-8 
28 
41-3 
31-9 
331 
42-0 
[45-8] 
44-3 
52-7 
54-9 
40-7 
41-2 
45-9 
43-2 
29 
[427] 
31-8 
41-9 
40-3 
48-1 
54-3 
50-3 
42-2 
[34-0] 
391 
43-9 
30 
40-5 
37-5 
[42-5] 
44-3 
511 
[53-5] 
48-6 
55-0 
331 
42-4 
42-2 
31 
44-1 
45-9 
44-8 
52-7 
54-0 
32-6 
[36-0] 
Mean 
36-8 
31-5 
37-1 
41-7 
44-2 
48-6 
53-6 
54-6 
52-4 
40-3 
38-3 
43-4 
The daily means have been obtained from the daily observations by the formulas already given. Table I., 
for the dry bulb thermometer. 
Annual Variation of the Temperature of Evaporation. — This follows the same law as the temperature of 
the air, Table I. The greatest monthly mean is that for August, the least is that for February. 
The means for the meteorological seasons are as follow : — 
Winter, Dec, Jan., Feb., 37°-2 Jan., Feb., Mar., 35 C T 
Spring, Mar., Apr., May, 4T°-0 Apr., May, June, 44°-8 
Summer, June, July, Aug., 52° - 3 July, Aug., Sept., 53 c, 5 
Autumn, Sept., Oct., Nov., 43°-? Oct., Nov..' Dec.,' 40 o> 7 
The year 1843, 43°-54. 
