228 On the Climate, Diseases, Geology, &c. of Ohio: 
upon iron stone, at Zanesville ; especially the roots, and the 
trunk and leaves, are found in micaceous sandstone. The 
pressure, and the bark of them partially turned imto fossil 
coal, Thus the shale oftener contains a bark, now become 
fossil coal, and a stratum of shale in succession, alternately, 
for several inches in thickness. ~ 
efore I leave Zanesville, I wish to make a passing re- 
mark or two, on the subject of finding the fossil remains of 
tropical plants here. The date, the bamboo, the cocoanut 
bearing palm, the cassia, the tea plant, &¢. are found at this 
day only in tropical regions, or in a climate where there is 
very little frost. At Zanesville, so severe is the winter at 
dur latitude to Cuba? I know of none. Has the climate 
of the world generally become colder, then? I say- general- 
What a picture of the winter which : : r 
er which prevailed.at Rome ™ 
ae Augusta age? Such a picture would now best suit the 
the Who now th ay vg conan aes 
ae oe 7 sees the roofs of houses at Rome, OF 
even in Paris, ready to break down with snow? In David’s 
