380 Analyses of Books. [May, 
Between latitude 38° and 50° in the old Continent, the mean 
temperature differs 12°; in the new Continent it differs 165°: so 
that in Europe a degree of latitude occasions a difference of 0°63°; 
in America of 0°87°. In both Continents the zone in which the 
temperature decreases most rapidly is contained between the paral- 
lels 40° and 45°. 
Diminution of heat corresponding to 10° in Jatitude. 
—— S$ 
- —_ 
Zones. Old Continent. New Continent, 
O° — 26°. ..... BP be, at a anal a? 
20 — 3 5 Ae 8 ah IG AS 
BOO a AD! a es i's ANCES s:Sibdnet id crarweie 7 
40 —'50 ........ 7 Cn broke Prepress. 
50 — 60 ........ De SEER Se 3s ope 
O° —. 60-5 2 2D Sab Ee ae OO ee 
Nearly the same difference exists between the mean temperature 
of the eastern and western parts of the old Continent, as between 
the western parts of the old Continent and America, as will appear 
from the following table :— 
Lat. Mean Temp. 
SE TIRHROES co 6 oc cien « AR OO 5 scene eee 
PANTISCERGIAT DS ecto co's DE) AD, foie dates po eg Mile 
LOPERAROM 15s i530) AE oe win nyaeta a ee 
RISD. 2.6 2-0 speek a ee) eee aereere 5:5 
POMPE Sd ose Sih wel BOs EDs oa Soe ig 
Waennarr co oe5 ier BO Nc 2 Se. ote cates 103 
Warsaw Perea DP UAE a At 9°2 
Wostow rice ne. SS (AG 2iteet< ee 
Petersburgh ...... SP. OY btned aks 3:8 
Pekin: al kane oon BS WAS ley Oe, a be eee, 
But though the mean temperature of the year in the middle 
latitudes of North America be the same as it is in Europe seven 
degrees further north, the temperatures of the different seasons by 
no means agree in these circles of equal temperature. The winters 
are colder and the summers warmer in North America than in 
Europe. At Philadelphia the summer is as hot as at Rome and 
Montpelier ; while the winter corresponds with that at Vienna. 
At Quebec the summer is warmer than at Paris, the winter colder 
than at St. Petersburgh; but in the north of China there. is 
a greater difference between the heat and cold than in North 
America. 
