CONTENTS. 
Richter’s ‘‘ Plattner’s Manual of Qualitative and Quantitative 
Analysis with the Blowpipe ” 
Allan’s ‘‘ Theory of Arches” . 
Bonney’s “ Geology” 
“Fourth Annual Report of the Board of Commissioners of Public 
Charities of the State of Pennsylvania”. 
Rutley’s ‘‘ Mineralogy” . 
Goodeve’s “‘ Principles of Mechanics” . 
Phillips’s ‘‘ Elements of Metallurgy” 
Girard’s ‘‘ Le Monde Microscopique des Eaux” 
PROGRESS IN SCIENCE. 
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Including Proceedings of Learned Societies at Home and Abroad, and 
Notices of Recent Scientific Literature. 
MINING . 5 5 : 5 ‘ : : : rs 3 A 
METALLURGY 
MINERALOGY 
ENGINEERING . 
GEOLOGY . 
PHYSICS 
TECHNOLOGY . 
