IMPORTANT SCIENTIFIC WORKS.— (Continued.) 



IX. 



Gore, G. The Art of Electro-Metallurgy ; including all known of Elec- 

 tro-Deposition. Illustrated. 16mo. Cloth, $2.60. 



X. 



Gosse's Evenings at the Microscope; or, Kesearches among the Mi- 

 nuter Organs and Forms of Animal Life. 12mo. Cloth, $1.60. 

 zi. 



Harris, George, F. S. A. Civilization considered as a Science. 12mo. 

 Cloth, $1.60. 



XII. 



Helmholtz, H. Popular Lectures on Scientific Subjects. Translated 

 by E. Atkinson, Ph. D., F. C. S. With an Introduction by Pro- 

 fessor Ttndall. 12mo. Cloth, $2.00. 



XIII. 



Hinton, James. Physiology for Practical Use. With an Introduc- 

 tion by Professor E. L. Toumans. 12mo. Cloth, $2.25. 



XIT. 



HoSinann, Frederick. Manual of Chemical Analysis, as applied to 

 the Examination of Medicinal Chemicals. A Guide for the Deter- 

 mination of their Identity and Quality, and for the Detection of 

 Impurities and Adulterations. For the Use of Pharmaceutists, 

 Physicians, Druggists, and Manufacturing Chemists, and Students. 

 8to. Cloth, $3.00. 



XT. 



Johnston, Professor James F. W. The Chemistry of Common 

 Life. A new edition, revised, enlarged, and brought doTvn to the 

 Present Time, by Aethdr Herbert Church, M. A. Oxon., author 

 of " Food : its Sources, Constituents, and Uses." Illustrated with 

 Maps and numerous Engravings on Wood. 12mo. Cloth, $2.00. 



XVI. 



I<e Conte, Professor Joseph. Elements of Geology. A Text-Book 

 for Colleges and for the General Eeader. 8vo. Cloth, $4.00. 



