Geology and Natural History. 383 
parts of North America. A number of species are described as 
new; but the volume is in the main a compilation, 
These volumes are handsomely printed, and the plates of Dr. 
Leidy’s report—the only one of the two illustrated—are excellent. 
(3.) Meteorological Observations during the year 1872 in Utah, 
Idaho and Montana. Prepared for publication by Henry Gan- 
NETT. 120 pp. 8vo. Washington, 1873.—The reports consist of 
tables containing the results of observations under the heads of 
own country, the same phenomenon is repeated in those naked 
Places called glades, on the slopes of the Alleghany and of the 
'tondack Mountains. They are openings like small / apeane in 
ently no 
yey ed these places; a small spring has developed the Gp pean 
\ preventing the oiwth of any other kind of vegetation but 
ce of the bogs, even covering the dead trees falling upon them ; 
and there we have deposits of peat upon slopes of the same degree 
as that of the forests around. 
e one will take the trouble to traverse a peat-bog, even where 
8 surface is flat and looks uniform, and where the dryness affords 
The essential vegetable, the moss (Sphagnum) is not only 
‘preading and posehiag the plane surface, but its tufts ascend all 
bris of wood, even the largest trees which have fallen 
