TABLE II. Mean Temperature of every day in the month of February , as deduced from the observations taken, on that day at the Gardens of the Royal Horticultural Society at Chiswick in the years 1826-1869; 
and extremes of Mean Temperature for every day within the same period. 
Dat op 
i 
FEBRUARY. 
3 
Lowest and Highest 
Mean Daily Temperature 
r 
Month 
1826 
1827 
1828 
1829 
1830 
1831 
1832 
1833 
183+ 
•83s 
1836 
1837 
1838 
1839 
1840 
1841 
1842 
1843 
1844 
1845 
1846 
1847 
1848 
1849 
1850 
18^1 
1852 
1853 
1854 
1855 
1856 
1857 
1858 
i8 59 
i860 
1861 
1862 
1863 
I 864 
1865 
1866 
1867 
1868 
1869 
i 1 
Lowe* 
Year 
Highest 
Yl-ot ■ 
u 
0 
0 
Q 
0 
0 
o 
0 
0 
0 
0 
0 
0 
o 
o 
O 
o 
o 
0 
O 
0 
O 
0 
0 
O 
0 
o 
O 
0 
o 
O 
Q 
0 
e 
0 
o 
0 
0 
0 
0 
0 
0 
0 
* 
438 
40-2 
45-2 
27*7 
23-6 
35-7 
41-0 
3V-8 
48-7 
39-6 
31-8 
43-3 
29-3 
32-3 
44-8 
33*2 
35*8 
51-6 
36-8 
49-3 
30-9 
45-3 
26-5 
33-2 
26-2 
31-1 
41-7 
31-3 
45-8 
50-6 
43-7 
41-7 
44-5 
51-2 
46-8 
48-2 
48-8 
39 -o 
23-5 
1830 
51-6 
1850 H 
LI 
48-5 
340 
43-3 
26-2 
20-6 
32-3 
41-5 
47*2 
42-9 
48-7 
37-6 
42-3 
28T 
31-8 
44-6 
25-5 
44-8 
42-3 
32-6 
30-6 
41-8 
33-7 
38-4 
45-8 
50-4 
36-7 
50-1 
33-9 
37-1 
28-7 
32-9 
31-3 
31-3 
40-7 
33-8 
37-4 
48-7 
480 
47-2 
44-8 
45-6 
42-0 
461 
39-2 
38-9 
20-6 
1830 
50-4 
185U I 
5( 
3 
49-2 
33-2 
41*8 
28-6 
22-3 
35-6 
40-6 
45-8 
42-8 
46-9 
370 
39-9 
300 
36-3 
44-8 
21-5 
41-7 
35-2 
32-2 
38-3 
45-8 
34-0 
39-7 
46-8 
44-9 
35T 
42-7 
36-6 
27-9 
31-1 
33-8 
29-5 
40-5 
32-7 
33-3 
40-2 
49-6 
43-3 
45-5 
42-5 
41-5 
39-0 
40-5 
49-9 
38-4 
21-5 
1841 
49-9 
1865 
4 
46-2 
340 
46-3 
36-3 
271 
37-5 
46-2 
49-5 
43-2 
44-6 
37-2 
360 
28-5 
41-8 
44-1 
26-3 
38-3 
350 
33-4 
351 
42-8 
32-2 
44-9 
46-7 
40-4 
35-1 
47-4 
36-5 
36-5 
35-2 
35-6 
26-5 
44-2 
41-3 
38-5 
43-9 
53-2 
41-7 
36-1 
35-3 
44-8 
41-7 
41-4 
50-7 
39’5 
263 
1841 
53-2 
1862 
5 
46-7 
320 
48-7 
40-8 
19-9 
35-4 
50-7 
48-4 
43-6 
44-2 
36-1 
33-6 
30-2 
41-1 
41-8 
26-5 
34-9 
33-5 
29-6 
390 
40-8 
36-4 
50-8 
45-7 
44-8 
43-6 
49-5 
36-8 
45-0 
35-8 
42-5 
31-2 
42-0 
44-4 
43-1 
45-3 
48-3 
46-4 
321 
36-1 
45-9 
43-2 
44-2 
49-5 
40-5 
19-9 
1830 
50-8 
IS IS 
6 
48-3 
34-7 
484 
40-7 
19-7 
34-6 
45-4 
49-2 
39-6 
41-2 
42-2 
33-4 
31-6 
44-3 
41-6 
26-4 
32-7 
34-6 
34-0 
31-4 
420 
41-6 
61-3 
441 
40-4 
36-8 
42-6 
38-7 
52-5 
32-8 
46-8 
42-3 
380 
38-1 
36-9 
45-5 
43-6 
48-0 
320 
39-7 
51-4 
42-3 
40-3 
46-6 
40-2 
19-7 
1830 
52-5 
18'il | 
7 
41-7 
33-7 
46-5 
43-8 
42-0 
50-5 
381 
48-4 
34-2 
45-9 
43-3 
36-9 
388 
49-9 
46-4 
25-2 
35-4 
34-7 
39-9 
27-8 
44-1 
28-4 
48-0 
43-0 
39-5 
42-8 
40-7 
39-5 
46-3 
320 
51-2 
39-8 
360 
33-0 
38-6 
44-6 
33-5 
48-9 
25-6 
45-5 
46-1 
40-9 
43-7 
50-9 
40-6 
25-2 
1841 
51-2 
18.16 ; 
8 
37-0 
32-3 
42-5 
378 
44-1 
54-4 
400 
472 
30-8 
41-2 
42-4 
401 
44-7 
50-4 
39-5 
27-1 
38-4 
36-5 
35-3 
27*3 
37-0 
27-0 
47-3 
41-7 
46-2 
43-6 
48-9 
34-4 
41-6 
30-5 
49-8 
41-4 
33-7 
39-7 
43-0 
43-4 
26-0 
42-1 
31-5 
38-0 
43-5 
48-4 
37*3 
51-4 
39*9 
260 
1862 
54-4 
1831 
9 
35-8 
31*3 
37*6 
40-3 
41-3 
56-1 
41-3 
40-4 
33-4 
387 
48-7 
46-2 
40-1 
51-0 
42-2 
28-4 
440 
37-1 
37-0 
30-2 
34-2 
21-1 
45-5 
41-5 
46-0 
40-2 
39-5 
372 
390 
26-8 
52-1 
41-1 
3io 
43-0 
32-7 
40-4 
34-5 
38-3 
27-4 
330 
47-0 
47-7 
35-1 
47-4 
39-2 
21-1 
1847 
56-1 
1801 
IO 
35*5 
33-4 
34-4 
40-4 
35-8 
51-6 
37-0 
501 
37-6 
32-7 
43-7 
47-7 
30-3 
40-5 
45-4 
29-2 
45-9 
36-4 
36-5 
29-3 
31-3 
28-4 
430 
44-5 
42-3 
40-3 
35-6 
35-6 
36-9 
21-0 
48-7 
42-1 
33-4 
43-3 
25-4 
34-3 
36-1 
42-6 
291 
31-7 
44-2 
50-2 
45-8 
49-7 
38-4 
210 
1855 
51-6 
1831 
II 
374 
32-7 
31-2 
42-9 
380 
51-0 
38-4 
51-3 
40-7 
39-4 
36-3 
44.4 
31-6 
41-0 
45-3 
38-3 
49-4 
38*6 
34-3 
24-8 
34-5' 
26-3 
39-5 
37-2 
41-0 
38-3 
33-6 
31-5 
34-4 
23-5 
46-7 
44-7 
33-2 
46-1 
29-4 
30-7 
37*0 
43-3 
34-6 
26-1 
42-6 
43-9 
43-0 
50-1 
38-1 
23-5 
1855 
51-3 
1833 
4 
IX 
430 
32-7 
30-3 
450 
375 
49-8 
38-3 
48-3 
40-2 
40-8 
39-6 
43-5 
276 
450 
43-8 
43-9 
49-6 
37T 
30-7 
15-8 
38-7 
23-4 
42-0 
32-7 
37-9 
38-9 
32-9 
31-0 
34-5 
30-0 
47-8 
36-4 
390 
46-3 
29-7 
31-5 
39-8 
39-6 
40-4 
29-3 
40-2 
48-7 
37*9 
43-5 
38-1 
15-8 
1845 
49-8 
1831 
! 13 
44-9 
33-6 
31-9 
44-5 
350 
45-9 
371 
46-5 
38-3 
42-4 
372 
44-1 
24-5 
40-4 
42-3 
46‘3 
44-4 
30-8 
267 
31-3 
38-9 
26-1 
48-8 
33-9 
32-9 
41-3 
36-0 
30-6 
31-3 
240 
48-2 
35-8 
41-4 
43-4 
27-2 
33-7 
36-7 
36-8 
46-8 
27-6 
34-6 
47-6 
41-0 
41-2 
37, 
24-0 
1855 
48-8 
ISIS 
>4 
460 
34-3 
32-2 
460 
34-1 
43-6 
350 
436 
40-4 
47-3 
410 
40-5 
26-4 
43-5 
35-2 
471 
45-0 
29-5 
35-9 
37-2 
384 
42-0 
50-9 
41-4 
41-4 
380 
35-4 
29-3 
31-6 
26-5 
47-0 
35-2 
37-8 
400 
29-8 
34-2 
38-7 
39-2 
44-0 
28-7 
36-4 
44-7 
45-2 
47-3 
38, 
26-4 
1838 
50-9 
ISIS 
15 
1 47*8 
33-8 
34-5 
46-6 
341 
43-4 
300 
38-7 
39-2 
47*1 
37-9 
41-2 
29-3 
41-5 
38-5 
45-6 
46-6 
25-7 
42-9 
35-8 
38-0 
44-6 
42-7 
45-5 
52-5 
34-6 
42-4 
29-6 
375 
24-3 
44*1 
36-8 
35-4 
44-9 
34-0 
45-9 
38-8 
421 
48-1 
23-8 
39-2 
46-5 
39-5 
45-7 
39'S 
238 
1865 
52-5 
mo 
! 16 
| 47*7 
261 
35-3 
46-4 
340 
460 
350 
37-4 
34-8 
42-3 
41-0 
49-8 
30-0 
39-3 
473 
46-2 
44-0 
27-0 
37-5 
33-5 
44-1 
43-4 
401 
38-8 
43-4 
330 
430 
31-4 
370 
25-2 
42-4 
39-6 
36-0 
510 
37-7 
45-4 
38-0 
330 
42-3 
32-8 
431 
50-6 
36-2 
48-6 
39'S 
25-2 
1855 
510 
1839 
J 
1 17 
43-2 
24-6 
33-7 
44-0 
32-3 
44-0 
401 
39-7 
36-2 
41-7 
37-6 
42-8 
304 
35-9 
44-4 
41-5 
41-9 
31-3 
40-3 
32-5 
430 
50-8 
37-3 
390 
460 
35-3 
51-6 
30-3 
41-8 
20-2 
39-0 
42-8 
34-8 
48-3 
38-5 
46-4 
41-7 
34-7 
37-0 
33-7 
33-0 
45-7 
39-3 
48-0 
39“ 
20-2 
1855 
51*6 
1832 
h 
! 18 
41-7 
252 
378 
373 
33-8 
42-4 
41-0 
43-2 
.45-2 
40-8 
35-6 
43-9 
340 
31-6 
36-9 
45-8 
35-8 
32-7 
43-5 
32-6 
43-2 
47-9 
34-5 
43-5 
48-5 
60-5 
38-7 
29-6 
341 
16-3 
34-7 
43-9 
29-9 
38-9 
39-6 
44-7 
45-6 
37-7 
330 
39-4 
31-8 
44-7 
44-6 
44-6 
387 
16-3 
1855 
50-5 
1851 
i J 9 1 
45-3 
28o 
42-8 
42-7 
33-9 
44-2 
33-7 
44-2 
450 
44-2 
32-2 
44-4 
32*5 
33-1 
32-7 
44-8 
36-3 
351 
40-4 
280 
42-4 
42-5 
41-6 
44-8 
48-4 
48-8 
32-5 
25-4 
34-1 
23-5 
35-6 
36-2 
30-3 
40-7 
35-8 
44-8 
49-4 
42-6 
28-3 
33-5 
33-0 
489 
43-4 
42-2 
38-5 
23-5 
1855 
49-4 
1862 
< 
; 20 j 
43*7 
30-4 
46-6 
46-3 
34-3 
38-2 
35-0 
41-6 
43-7 
41-7 
29-5 
43-7 
34-0 
36-5 
31-5 
460 
35-7 
374 
31-3 
28-3 
44-1 
450 
38-1 
43-0 
43-8 
46-9 
29-7 
29-8 
40-9 
230 
34-9 
41-5 
320 
45-3 
33-5 
44-5 
50-7 
41-2 
28-2 
31-5 
34-7 
49-2 
42-1 
42-3 
38-4 
230 
1855 
50-7 
1862 
zt 
43-8 
34-4 
45-5 
460 
41-2 
38*3 
38-0 
42-8 
40-7 
40-1 
32-5 
45-7 
34-2 
36‘2 
31-1 
43-2 
378 
43-9 
35-8 
31-5 
48-5 
46-0 
38-8 
45-2 
45-3 
41-7 
33-2 
31-0 
40-6 
22-4 
33-6 
43-7 
34-1 
45-5 
36*1 
45-7 
43-7 
42-0 
29-5 
33-5 
37-8 
47-7 
48-6 
41-9 
39'S 
22-4 
1855 
48-6 
186S 
22 
47-2 
321 
45-5 
41-4 
41-9 
370 
34-2 
40-3 
41-9 
44-4 
38-3 
42-4 
, 33-7 
45-9 
29-5 
401 
41-8 
46-4 
30-4 
33-6 
48-6 
44-1 
45-7 
475 
46-2 
39-6 
38-4 
32-3 
41-5 
25-5 
35-3 
41-4 
32-5 
42-4 
36-7 
47-2 
480 
43-0 
29-0 
40-0 
40-3 
485 
450 
34-2 
40*0 
255 
1855 
48-6 
1846 
23 
39-3 
322 
40-1 
36-4 
49-2 
38-0 
33-5 
374 
48'8 
42-8 
37-6 
42-6 
35-5 
43-3 
30-3 
38*6 
44-7 
45-0 
374 
37-2 
53-3 
39-9 
46-7 
41-7 
43-9 
40-4 
37-2 
34-8 
40-7 
291 
38-8 
378 
37-0 
37-5 
31-8 
44-5 
45-6 
44-5 
28-5 
45-2 
41-5 
43-4 
40-4 
36-9 
39'S 
28-5 
1864 
53*3 
1S46 
; 2 4 1 
39-4 
351 
46-4 
36-7 
52-1 
45-0 
31-5 
40-2 
48-7 
40-6 
38-3 
38-3 
40-0 
41-0 
321 
383 
42-6 
38-6 
388 
38-8 
53-6 
33-8 
48-7 
42-3 
39-4 
430 
36-7 
35-4 
41-5 
35-4 
38-1 
37-0 
34-2 
39-5 
30-9 
41-2 
39-1 
44-6 
32-8 
42-0 
40-6 
44-8 
50-4 
40-2 
4°' 2 
30-9 
1860 
53-6 
1846 
! 2 5 
47-0 
34-2 
50-8 
38-9 
520 
42-9 
34-3' 
43-4 
40-9 
46-9 
340 
35-4 
43-0 
39-2 
34-4 
394 
370 
351 
44-2 
40-7 
61-2 
320 
48-4 
431 
42-3 
42-6 
370 
351 
43-2 
430 
40-5 
34-7 
31-3 
39-1 
33-3 
39-9 
37-7 
42-6 
340 
39-4 
42-0 
46-3 
50-7 
42-7 
40-6 
31-3 
1858 
520 
1830 
' 26 1 
42-8 
45-6 
531 
401 
50-6 
43-2 
37-9 
440 
42-4 
44-8 
35-1 
35-4 
37'6 
35-4 
35-1 
42-1 
38-6 
36-4 
39-7 
441 
60-7 
31-9 
451 
38-9 
39-7 
36-3 
38-8 
36-8 
373 
37-9 
48-7 
36-4 
301 
40-6 
45-0 
39-4 
34-5 
46-3 
36-9 
41-9 
38-9 
421 
50-1 
46-6 
40-8 
30-1 
1858 
53-1 
1828 
1 *7 
46-i 
49*5 
54-7 
38-9 
510 
44-4 
38-5 
42-3 
50-9 
43-9 
34-5 
37'6 
39-4 
40-2 
35-1 
48-2 
411 
38-3 
33-6 
420 
50-4 
31-9 
48-7 
38-5 
40-3 
37-6 
39-2 
32-8 
42-4 
36-9 
47-9 
40-2 
32-4 
44-3 
39-8 
39-4 
34-5 
45-7 
38-4 
42-4 
34-4 
38-7 
46-1 
44-4 
41-3 
31-9 
1847 
54-7 
28 
i 49-2 
45-3 
48-6 
33-6 
51-1 
41-4 
36-4 
39-4 
50-4 
39-7 
35-8 
360 
45-4 
41-9 
376 
38-9 
461 
388 
40-3 
363 
62-9 
34-2 
47T 
41-2 
42-2 
36-1 
41-2 
31-3 
42-0 
39-6 
42-1 
43-5 
32-7 
40-4 
41-6 
43-9 
37*3 
43-4 
39-4 
46-3 
31-6 
34-7 
49-5 
40-6 
4 1 * 1 
31-3 
1853 
52-9 
1846 
29 
... 
... 
47-1 
... 
... 
... 
372 
... 
... 
... 
36-9 
... 
.J 
... 
35-9 
... 
... 
42-3 
... 
... 
... 
42-8 
... 
... 
36-3 
... 
... 
... 
40-9 
... 
... 
35-4 
... 
... 
... 
38-9 
... 
... 
... 
45-3 
... 
... 
... 
... 
... 
Mean. 
43'9 
3„, 
36-9 
42-9 
38-2 
43-8 
43-0 
37-9 
411 
33-7 
40-3 
37-1 
47, 
36-5 
361 
330 
48, 
35-8 
43-8 
41-9 
43-6 
39-8 
40-0 
33-1 
39-1 
28-8 
41-8 
37-8 
34-9 
35-3 
41-6 
41-5 
42-3 
35-8 
36-7 
40-6 
45-0 
43-5 
45-2 
39*4 
The Mean Temperature of the coldest day in February in the years 1826 to 1869 was 15°‘8, and it took place on the 12th day in the year 1845. 
The Mean Temperature of the hottest day in February in the years 1826 to 1869 was 66°*1, and it took place on the 9th day in the year 1831. 
The difference between these numbers is 40°-3, and it represents the extreme difference between the Mean Temperature of two days in the month of February 
T ^ 
The day of the month whose Mean Temperature has been subjected to the greatest difference was the 9th ; in the year 1847 its Mean Temperatui 
21°-1, and in the year 1831 it was 56°1; the difference between these numbers is 35 o, 0. 
The day of the month whose Mean Temperature has been subjected to the least difference was the 25th; 
and in the year 1830 it was 52 o, 0; the difference between these numbers is 20°*7. 
