SCIENCE 



New Series. 

 Vol. III. 



% 



Friday, January 10, 1896. 



Single Copies, 15 CTS. 

 Anndal Sdbsceiption, $5.00. 



D. Yan Nostrand Co.'s Eecent Publications. 



Electrical Transmission of Energy. A Manual 

 for the Design of Electrical Circuits. By Aethue 

 Vaughan Abbott, C.E., Chief Engineer Chicago Tel- 

 ephone Company, Member American Institute Elec- 

 trical Engineers, Member American Institute of Min- 

 ing Engineers, Junior American Society of Civil 

 Engineers. 8vo, cloth, 608 pages, 8 folding plates, 

 numerous illustrations, $4.50. 



The Metallurgy of Qold. A practical treatise on 

 the Metallurgical Treatment of Gold Bearing Ores, 

 including the processes of concentration and chlorina- 

 tion and extraction by cyanide, and the assaying, 

 melting and refining of gold. By M. ElssLEE, M.E. 

 Fourth Eilition, revised and enlarged to 700 pages. 

 With 25 additional plates, and working drawings and 

 chapters on recent milling operations in the Transvaal. 

 Large '8vo, cloth, $5.00. 



A Text=Book of Organic Chemistry. By A. 



Beenthsen. Translated by George McGowan, Ph.D. 

 Second English Edition from the Fourth German Edition. 

 Illustrated, 12mo, cloth, ?i2.50. 



time and attention it deserves. With it a mature student can 

 easily get a good working Isnowledge of the subject." 



— I^fof. Felix Lengfeldf University of Chicago. 



Elements of Mineralogy, Crystallography, 

 and Blowpipe Analysis. From a practical stand- 

 point. By Alfred J. Moses, E.M., Ph.D., Adjunct 

 Professor of Mineralogy, Columbia College School of 

 Mines, New York City, and Chables Latheop Par- 

 sons, B.S., Professor of General and Analytical Chem- 

 istry, New Hampshire College, Durham, N. H. Bvo, 

 cloth, 336 illustrations, ?2.00. 



"The scheme on which the boolv has been prepared has been 

 to answer practical every-day questions liice 'What is a mineral ?' 

 ' What use has it ? ' ' How do you recognize it ? ' ' If you canno t 

 recognize it, how can you determine it by simple and rapid tests?' 

 etc. These questions the authors answer in as plain and concise 

 a manner as possible, using only the strictly scientitic detail and 

 principles absolutely necessary to present a perfect explanation." 

 — Colliery Engineer 



Armature Windings of Electric Machines. 



With 140 full-page, plates, 65 tables and descriptive 

 letter press. By H. F. Paeshall and H. M. Ho- 

 BAET. 4to, cloth, 17.50. 



The treatie discusses exhaustively the principles governing the 

 arrangement of armature conductors of ele trical machines, both 

 continuous and alternating current, Including various multiphase 

 windings applicable in practice. 



Letters for Draftsmen, Engineers and Stu= 

 dents. A practical system of Freehand Lettering for 

 Working Drawings. By C. E. Eeinhaedt. Oblong 

 board. 8x11 inches. 23 pages, 44 illustrations and 

 9 plates, $1.00. 



Treats upon purely freehand lettering in a thoroughly practical 

 way, giving the proper sequence of strokes employed for forming 

 each letter and warning the bCKinner at the same time against er- 

 rors most commonly committed. Special attention has been given 

 to the subject of lettering workmg drawings. The work is the re- 

 sult of the writer's experience gained in years of practice at the 

 bead of the Engineering News' drafting department, and is ia- 

 tendeA to he a practical guide towards efficiently doing the 

 best class of work within the shortest possible time. 



A Manual of Marine Engineering : Comprising 

 the designing, construction and working o£ marine 

 machinery. By A. E. Seaton. Twelfth Edition, with 

 a new chapter on water-tube boilers. With numer- 

 ous illustrations reduced from working drawings. 

 Svo, cloth, $6.00. 



Link and Valve Motions Simplified. Illus- 

 trated with 29 woodcuts and 20 lithographic plates, 

 together with a travel scale and numerous useful ta- 

 bles. By W. S. AUCHINCLOSS. Thirteenth Edition, 

 revised. 8vo, cloth, $2.00. 



Electricity in our Homes and Workshops. A 



practical treatise on auxiliary electrical apparatus. 

 By Sydney F. Walkee. Tldrd Edition, revised. 

 12mo, cloth, $2.00. 



How to Drain a House. Practical information 

 for householders. Neio and Enlarged Edition. By 

 Col. George E. Waring, Jr., M. Inst. C. E. 12mo, 

 cloth, illustrated, $1.25. 



Treatise on Industrial Photometry, Specially 

 Applied to Electric Lighting. By A. Palaz, Sc. 

 D. Translated from the French by G. W. Patterson, 

 Jr., Assistant Professor of Physics in the University 

 of Michigan, and M. R. Patterson, B.A. Fully illus- 

 trated. Svo, cloth, $4.00. 



Lettering of Working Drawings. By Peof. 

 J. C. L. Fish, of Leland Stanford, Jr., University. 

 13 plates, with decriptive text. Oblong, boards, $1.00. 



" I have been particularly pleased with the idea carried out in 

 this book, and it seems to me to be likely to be of much use to 

 those engaged in teaching drawing technique " 



— Pi-of. W. F. Durand, Cornell University 



23 MURRAY and 27 WARREN STS., NEW YORK. 



