236 Climatology of the United States. 
and at 150 stations for other portions of the northern hem — , 
sphere; also the average amount of rain for each month at 200 : 
_ stations in the United States, and more than 50 stations on the 
- Eastern continent. It contains an outline of the Physical Geog- 
~ 
, 
raphy of the United States; it describes the general character of ’ 
the climate of the Eastern United States; as also that of the in- , 
terior and of the Pacific coast ; it institutes a comparison between 
the arid and interior areas of the two continents; between the 
Eastern United States and the West of Europe, and also a com- 
ison between the basin of the Gulf of Mexico and that of the | 
editerranean sea. It describes the distribution of heat in the | 
The author 
moreover assures us that “no part of this work ts the result of 
hasty or superficial discussion, and that all the steps of analytica 
The distribution of temperature in the United States 1s i 
Ai yi and the isothermal lines pay very little 
Tespect to parallels of latitude. Throughout the whole — 
east of the Mississippi, these irregularities are less remarka 7 
and the position of the lines of equal temperature 1s substantially — 
t 
the same as has been long since assigned them; but between : 
rought to light by the publication of the Army Meteorol 
Register and the a ae of Mr. Blodget. 
