oe 
320 Terrestrial Climate as influenced by the 
respecting the influence of the distribution of land and water ol 
general climate, especially as the influence of the land seems t0 
have been hitherto principally considered as a calorific agent 
The heating action of intertropical land has been s0 often dis- 
cussed by writers on climate, that it is unnecessary 10 do bo 
than to point out its principal agency in the production of 
currents, by which exchanges of temperature may be promoted 
between different parts of the earth’s surf: 
favorable to an excess of land temperature. Thi ip 
confirmed by the results exhibited in Mr. Deville’s map, of the 
some measure, by the fact of the higher mean temperature 
be 
by night ® 
= | ' _ tion 
ceived by any point on the earth’s surface 18 4 oy at 
latitude, it follows that the distribution of land and walt icy 
bint ei, | 
