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Laboratory Instructions in General Chemistry 
By ERNEST A. CONGDON, P#.B., F.C.S., 
Professor of Chemistry in the Drexel Institute, Philadelphia ; Member American Chemical Society ; Fellow of the Lon- 
don Chemical Society, ete. 
With 56 Illustrations and Useful Tables. Octavo, Interleaved, Cloth net $1.00. 
*,* This handbook contains several unique and practical features that will prove helpful to the teacher. It 
may be used in connection with any general text-book on chemistry. 
P. BLAKISTON’S SON & CO., Publishers, 1012 Walnut Street, Philadelphia 
TRILOBIT ES: ascesus'ctoas cer mate at trenton tats Some 
magnificent specimens are among them. Prices on application. 
Also lately received several specimens of the trilobite Triarthrus becki, showing legs and antennules; prices 
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Only One The English Edition 
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