16 SCIENTIFIC BOOKS PUBLISHED BY 



Pynchon's Chemical Physics, 



New Edition. Revised and Enlarged. 



Crown 8vo. Cloth. $3.00. 



INTRODUCTION TO CHEMICAL PHYSICS, Designed for the 

 Use of Academies, Colleges, and High. Schools. Illustrated with 

 numerous engravings, and containing copious experiments with 

 directions for preparing them. By THOMAS RFGGLES PYNCHOX, 

 M.A., Professor of Chemistry and the Natural Sciences, Trinity 

 College, Hartford. 



Hitherto, no work suitable for general use, treating of all these subjects 

 within the limits of a single volume, could bo found ; consequently the atten- 

 tion they have received has not been at all proportionate to their importance. 

 It is believed that a book containing so much valuable information within so 

 small a compass, cannot fail to meet with a ready sale among all intelligent 

 persons, while Professional men, Physicians, Medical Students, Photograph- 

 ers, Telegraphers, Engineers, and Artisans generally, will find it specially 

 valuable, if not nearly indispensable, as a book of reference. 



" We strongly recommend this able treatise to our readers as the first 

 work ever published on the subject free from perplexing technicalities. In 

 style it is pure, in description graphic, and its typographical appearance is 

 artistic. It is altogether a most excellent work." Eclectic Medical Journal. 



" It treats fully of Photography, Telegraphy, Steam Engines, and the 

 various applications of Electricity. In short, it is a carefully prepared 

 volume, abreast with the latest scientific discoveries and inventions.'' Hart- 

 ford Courant. 



Plympton's Blow-Pipe Analysis. 



12mo. Cloth. $2.00. 



THE BLOW-PIPE : A System of Instruction in its practical use 

 being a graduated course of Analysis for the use of students, 

 and all those engaged in the Examination of Metallic Combina- 

 tions. Second edition, with an appendix and a copious index. 

 By GEORGE W. PLYMPTON, of the Polytechnic Institute, Brooklyn. 



" This manual probably has no superior in the English language as a text- 

 book for beginners, or as a guide to the student working without a teacher. 

 To the latter many illustrations of the utensils and apparatus required in 

 using the blow-pipe, as well as the fully illustrated description of the blow- 

 pipe flame, will be especially serviceable." New York Teacfor. 



