150 Scientific Intelligence. 
The volumes take up first the Physical Geography of the State, as an 
Introductory to the Geology. Part I. treats of the Metamorphic rocks; 
second volume commences with the coal basins of the State, to which 
over 600 pages are devoted. Part III, some 30 pages in length, takes 
up the stone series, of the of the Connecticut 
River Sandstone. Part IV. includes discussions of various subjects: (1) 
of coal; (10) methods of searching for, opening and mining coal, put- 
sued in Pennsylvania; (11) American and European coal-fields and coal 
palachians, including the ‘system of folds constituting the great range of 
mountains and the arrangement of the ridges. The facts bear on the 
story of all mountain making. A large number of sections illustrating 
this subject are contained in the second volume, like the fac 
is indebted for descriptions of a large number of coal plants and a series 
of excellent plates illustrating them. The zoological paleontology Prot. 
Rogers not undertaken to describe. A few figures are given in the 
Napier on organic remains, pp. 815 to 829; but they are very unsati 
tery, and are sometimes wrongly named or without any specific names. 
