SCIENTIFIC PUBLICATIONS. 17 



GOULD, E. SHERMAN. The Arithmetic of the Steam 



Engine. 8vo, cloth $1.00 



- Practical Hydrostatics and Hydrostatic Formu- 

 lae. With numerous figures and diagrams ( Van A'oxtrand'x Science 

 Series, No. 117.) 16mo, cloth, illus., 114 pages $0.50 



GRAY, JOHN B.Sc. Electrical Influence Machines; 



their Historical Developement, and Modern Forms, with instructions 

 for making them. With numerous figures and diagrams. Second 

 edition, revised and enlarged. 12mo, cloth, illustrated, 296 pp.. 2.00 



GRIFFITHS, A. B., Ph.D. A Treatise on Manures, 



or the Philosophy of Manuring. A Practical Hand-Book for the 

 Agriculturist, Manufacturer, and Student. 12mo, cloth $3.00 



- Dental Metallurgy ; A Manual for Students and 



Dentists. 8vo, cloth, illustrated, 208 pages net, $3.50 



GROSS, EMANUEL. Hops, in their Botanical, Agri- 

 cultural and Technical Aspect, and as an article of Commerce. Trans- 

 lated from the German by Charles Salter. With tables, diagrams and 

 illustrations. 8vo, cloth, illustrated net. $4.50 



GROVER, FREDERICK. Practical Treatise on Mod- 

 ern Gas and Oil Engines. 8vo, cloth. Illustrated $2.00 



GRUNER, ANTON. Power-loom Weaving and Yarn 



Numbering, according to various systems, with conversion tables. An 

 auxiliary and text-book for pupils of weaving schools, as well as for 

 self -instruction, and for general use by those engaged in the weaving 

 industry. Illustrated with colored diagrams. 8vo, cloth. . .net. $3.00 



GURDEN, RICHARD LLOYD. Traverse Tables: 



computed to 4 places Decimals for every of angle up to 100 of Dis- 

 tance. For the use of Surveyors and Engineers. New Edition. 

 Folio, half morocco $7.50 



GUY, ARTHUR F. Electric Light and Power, giving 



the Result of Practical Experience in Central-Station Work. 8vo, 

 cloth. Illustrated $2.50 



GUY, A. E. Experiments on the Flexure of Beams, 



resulting in the Discovery of New Laws of Failure by Buckling. 

 Reprinted from the "American Machinist." With diagrams and 



folding plates. 8vo, cloth, illustrated, 122 pages net. $1.25 



Postage, .10 



HAEDER, HERMAN, C. E. A Handbook on the Steam 



Engine. With especial reference to small and medium sized engines. 

 For the use of Engine Makers, Mechanical Draughtsmen, Engineer- 

 ing Students and Users of Steam Power. Translated from the Ger- 

 man, with considerable additions and alterations, by H. H. P. Powles. 

 Third English edition, reviled. 8vo, cloth, illus., 458 pages. . .$8.00 



