CLIMATOLOGY. 
31 
respectively. But in the interior, at Natchez and Vicks- 
burg, the differences are greater, being 32°.69 and 31°.57. 
In the Atlantic districts the differences are nearly as great 
as those on the south coast, being 31°.Y3 at Savannah 
and 31°.09 at Charleston ; while in the interior the dif- 
ferences are much greater, being 36°.02 at Augusta and 
3 8°. 10 at Columbia. 
Louisiana.— The climate of most parts of this State is 
somewhat variable. From the sea to Point Coupee, it 
seldom snows or freezes, except in the months of December 
and January, and then when the wind is from the north or 
northwest. There is less heat and more moisture than in 
any similar latitudes on the eastern continent, and the cli- 
mate is generally very mild. In winter the thermometer 
seldom falls more than 2° below the freezing-point. Snow 
in New Orleans is a great curiosity. 
Mississippi. — Near the Gulf of Mexico the climate re- 
sembles that of the lower parts of Louisiana. The winter 
is mild, the summer warm, but tempered by the constant 
prevalence of the breeze from the Gulf, together with the 
elevation of the surface. At Natchez, however, the ther- 
mometer in winter sometimes stands as low as 10° F. In 
the northern part of the State the winters are quite cold, 
but only by spells, ten days of cold weather being regarded 
as a long period. Throughout the State generally, the 
warm season commences about the middle of April, and 
continues until the middle of October. Mild weather is 
often protracted through the winter, and we have often 
seen, in and about the capital of the State, roses blooming 
in November. 
