265 
Distrihution of Heat over the Globe, 
the annual temperature between winter and summer is made in 
such a manner, that, upon the isothermal line of 32°, the diffe- 
rence of the two seasons is almost double of that which is 
observed on the isothermal hne of 68°. 
Cisatlantic Region. 
Long. 31° E. and 22° W. 
Places. 
Latitude. 
Mean Temperature. 
Whole Year. 
Winter. 
Summer. 
(Pondicherry) 
11°, 55 
85°.3 
77°-0 
90°. 5 
Cairo, 
30 02 
72.7 
57,7 
84.7 
Funchal, 
32 37 
68.7 
63.9 
72.5 
Rome. 
41 53 
60.4 
45.9 
55.2 
Bourdeaux, 
44 50 
56,5 
42.1 
70.7 
Paris, 
Copenhagen, 
48 50 
51.4 
38.3 
66.2 
55 41 
45.7 
30.7 
64.6 
Stockholm, 
59 20 
42.3 
25.5 
61.9 
Drontheim, 
63 24 
39.9 
24.7 
61.3 
Umeo, 
63 50 
33,3 
12.9 
54,9 
Transatlantic Region, 
Long. 69° E. and 99° W 
Places. 
Latitude.' 
Mean Temperature. 
Whole Year. 
Winter. 
Summer. 
Cumana, 
10°.27 
81°.9 
81°.7 
83°. 7 
Havannah, 
23.10 
78.1 
71.2 
83.3 
Natchez, 
31.28 
64.8 
48.6 
79.2 , 
Cincinnati, 
Philadelphia, 
39.06 
53.6 
32.9 
72.9 
39 56 
54.9 
32.2 
73.9 
New York, 
40.40 
53.8 
29.8 
79.2 
Cambridge, 
42.25 
50.4 
34.0 
70.5 
Quebec, 
46.47 
41.9 
14.2 
68.0 
Nain, 
57.10 
26.4 
0.6 
48.4 
Fort Churchhill, 
59.02 
25.3 
6.8 
52.2 ■ 
If, instead of the mean temperatures of the seasons, we con- 
sider, I do not say the days of the maxima and minima of the 
year, which are the ordinates of the concave and convex sum- 
mits of the entire curve, but the mean temperatures of the 
warmest and the coldest month, the increase of the differences 
becomes still more perceptible. We request the reader to com- 
pare in the following Table only the places which belong to 
regions bounded by the same meridians, and consequently to the 
same system of climate ; as for example, to the region of Eas- 
tern America to that of Western Europe, and that of Eastern 
Asia. We must also attend to the changes of temperature pro- 
duced by the monsoons in a part of the equinoctial regions, and 
