. 
= 
57 
OBSERVATIONS ON THE BAROMETER, 
TABLE OF THE MEAN MONTHLY HEIGHTS AND MEAN ANNUAL HEIGHTS OF 
THE THERMOMETER FOR TWENTY-TWO YEARS, VIZ. FROM 1819 To 1840 
INCLUSIVE, 
Jan. 
39.5 
31.8 
38.8 
40,9 
32.9 
40.7 
38.1 
33.4 
35.6 
41.1 
34,1 
33.1 
36.6 
39.) 
36.1 
46.6 
39.9 
41.0 
38.7 
32.5 
40.1 
Years. 
1819 
1820 
1821 
1822 
1823 
1824 
1825 
1826 
1827 
1828 
1829 
1830 
1831 
1832 
1833 
1834 
1835 
1836 
1837 
1838 
1839 
1840 /41.4 
Means. 37.8 
Maxim |46.6 
Minim.|31.8 
Feb. 
38.8 
38.6 
43.6 
37.5 
41.0 
38.3 
43.8 
34.3 
42.1 
41.4 
42.6 
39.8 
43.1 
44.8 
43.9 
40.6 
42,1 
40.7 
40.5 
403 
44.8 
33.8 
36.1)¢ 
38.4/4 
33.8/43. 
Apr May Jun. July Aug Sep. Oct. Nov Dec Means. 
47.4 
48.9 
1/50.1 
47.9 
.1/45.1 
.0/46.8 
48.0 
4/44.5 
48.9 
47.2 
46.1 
54.1 
50.3 
.5/49.0 
47.5 
48.5 
.8)49.0)é 
147.5 
.8/42.1 
44.8 
46.3)5 
52.9 
4.1 
54.1 
51. 5 
53.7 
50.6 
55.9 
55.2 
52.5 
54.0 
54.2 
54.6 
42.1|50.6|56.0 
-1/60.6 
.1/62.4 
62.5 
56. 8 63. 8 
57.6|62.5 
56.3/60.8 
63.0/61 0 
55.1/58.0 
58.4|62.0 
56.0)63.5 
54.7/65.0 
58.2/63.0 
60.6|62.0 
60.8)63.1 
56.8/61.8 
61.4|63.0 
61.5/61.7 
64.9 
65.3 
62.3 
61.2 
64.4 
62.7 
62.1 
62.0 
59.8 
62.8 
60.7 
60.4 
59.0 
59.3 62.5 5 
59.4|55.8/46.8 
62.0/58.6|51.5 
59.4|55.4/51.7 
58.8155.5/48.4 
59.5|57.1/48.0 
62.0|60.0/51.4 
64.0/58.2|53.2 
57.4|53.6 
-8|60.0|/52.5 
.5|/54.5/49.4 
.8155.5|54.2 
.8)58.0/56.2 
.2/59.5/53.2 
55.5/51.8 
58.1/54.1 
.1/58.1/49.5 
55.2|50.2 
64.4|56.9/49. 6/39. 9/34.8 
42.9 
47.3 
46.9 
46.1 
43.7 
40.7 
40.6 
45.2 
48.0 
42.6 
45.9 
43.9 
43.9 
44.8 
47.0 
46.5 
43.7 
56.8|92.6 
-6/57.1|51.7 
56.7|52.0 
8|55.5/48.4 
57.1)51.4 
43.0 
42.3 
47.6 
45.7 
44.5 
49, 0 
48.3 
49.7 
50.6 
48.0 
49.2 
49.5 
51.0 
50.1 
51.8 
48.9 
49.8 
51.8 
50.8 
51.0 
53.5 
50.9 
50.2 
49.9 
48.7 
50.3 
37.9} 50.2 
41.4) 50.1 
40.8 
43.2 
35.6 
42.0 
40.1 
40.6 
43.0 
44.9 
47.0 
37.4 
37.2 
44.7 
42.9 
45.9 
45.0) 
41.0 
40.4 
43.8 
41.4 
40.5 
§4.7|65.3 
56.0|58.0|5 
64.2 
8.8 
60.0/56.2 
54.5|46.8 
ie 
|39.9 
45.9| 53.5 
34.8] 48.0 
By uniting the preceding Table with that pub- 
lished in the Memoirs, Vol. III. page 494, we ob- 
tain the mean monthly and annual temperature of 
the atmosphere at Manchester for the last 47 
years as follows :— 
