Bibliography, 8» © 191 
sip 
thoroughness with which he has read each section. Finally, a long ex- 
perience in one of the best schools in New England, has enabled the 
author to succeed most happily in adapting this work to the purposes of 
instruction. ? 
8. Practical Geology and Miakshcs. with Instructions for the 
Qualitative Analysis of Minerals; by Josnva Trimmer, F.G.S. Am. 
Ed., by Lea & Blanchard. pp, 527, 8vo.—We have read parts of this 
work, and looked over its plan. It appears to be exact, comprehensive, 
scientific, and practical. Its principal heads are— 
Introduction ; Practical Application and Uses of Geology ; its dis- 
coyeries not peposed to religion. 
Materials of the Crust of the Earth. 
Simple Bodies ; External characters of Minerals; Chemical charac- 
ters. 
Minerals composing the Crust of the Earth; Order of skicspecage 
of the Materials of the Crust of the Earth. 
Classification of Rocks; Explanation of Terms. 
Unstratified Rocks ; Stratified Rocks. 
Classification of the work. 
Primary or Non-fossiliferous Strata ; Fossiliferous: strata. 
Cambrian System ; Silurian System. 
Carboniferous System; Coal Fields of England. 
Poikilitic (upper red sandstone) System. f 
_ Oolitic System; Wealden. . Mra 
Cretaceous System; Tertiary System. | eg 
Modern Group, River Deposits. BF pt pM 2 a 
Coral Formation ; Igneous Rocks. aes TS hase é 
Temperature of the Interior of the Earth. a Paget ce 
Present state of the Geological 
Summary of admitted facts and sie roilbee' 3 in Geta” 
Conclusion ; Postscript; Glossary; Index. ~ 
The order is good in the main. . There are many advantages in in in- 
troducing the igneous rocks and the dynamics of fire first, as we have 
then all the great agents at our command, for the interpretation of the 
phenomena of the stratified rocks. ‘The work is neatly got up with a 
good type,.anda paper reasonably white, but too thin and tender, as 
our American reprints are wont to be ; and we have had much occa- 
sion to find fault, with many republications of foreign works, on account 
of an inferior and slovenly style, although there are honorable excep- 
tions. If we will persist in fete copyright to foreign authors, it is 
at least due | eir Teprinte ted works scold te soe in a good 
‘ 
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