SCIENCE.— AD VERTISEMENTS. 



Macmillan & Co.'s New Books in Science. 



Elementary Lessons in Electricity and 

 Magnetism. 



By Sylvanus P.Thompson, D.Sc, B.A., F.E.A.S., 

 Principal of the City and Guilds of London Technical 

 College, Finsbury. New, Revised Edition, with many 

 Additions. With numerous Illustrations. 12mo, 

 $1.40, net. 



Lectures on Human and Animal Psy- 

 chology. 



Translated from the Second and Revised German 

 Edition (1892) by J. E. Ceeighton, A.B. (Dalhou- 

 sie), Ph.D. (Cornell), and E. B. Titchenee, A.B. 

 (Oxon.), Ph.D. (Leipzig). 8vo, Cloth, $4.00, net. 



Popular Lectures and Addresses. 



By LOED Kelvin, F.E.S. In 3 vols. Vol. II. 

 Qeology and General Physics. With Illustra- 

 tions. Crown Svo. §2.00 each volume. 



A Laboratory Manual of Physics and 

 Applied Electricity. 



Arranged and Edited by Edwaed L. Nichols, 

 Professor of Physics in Cornell University. In two 

 vols. Vol. I. Junior Course in General Physics. 



By Eenest Meeeitt and Feedeeick J. Rogeks. 

 Svo, Cloth, §3.00, nd. Vol. II. Senior Courses 

 and Outlines of Advanced Work. By Geoege 

 S. MoLEE, Feedeeick Bedell, Homee J. Hotch- 

 Kiss, Chaeles p. Matthews, and the Editor. 

 Illustrated. Svo, Cloth, $3.25, net. 



" The needs of those who are in training to hecome electri- 

 cians have been specially considered Is admirably 



adapted for use as a text-book by students who have already 

 some knowledge of the technique of physical work." — Scots- 

 Ttian. 



A Treatise on the Measurement of Elec= 

 trical Resistance. 



By William Aethue Peice, M.A., A.M.I.C.E., 

 formerly Scholar of New College, Oxford. Svo, Cloth, 

 $3.50, net. 



Manual of Physico=Chemical fleasure- 

 ments. 



By WiLHELM OsTWALD, Professor of Chemistry in 

 the University of Leipzig. Translated, with the 

 Author's sanction, by James Walkee, D.Sc, Ph.D., 

 Assistant in the Chemical Laboratory, University of 

 Edinburgh. Illustrated. Svo, Cloth, $2.25, net. 



Systematic Survey of the Organic Color= 

 ing Matters. 



By Drs. G. Schultz and P. Julius. Translated 

 and Edited, with extensive Additions, by Aethue 

 G. Green, F.I.C., F.C.S., Examiner in Coal Tar Pro- 

 ducts to the City and Guilds of London Institute. 

 Imperial Svo, Cloth, $5.00, net. 



"Will be welcomed by manufacturers and students as the 

 latest and most complete synopsis of the organic coloring 

 matters that has hitherto been drawn up." — Nature. 



Cambridge Natural Science Hanuals. 

 Biological Series. Practical Physi- 

 ology of Plants. 



By Feancis DAEwaN, M.A., F.R.S., and E. Ham- 

 ilton Acton, M.A. With Illustrations. 12mo, 

 Cloth, $1.60, net. 



Columbia University Biological Series. 



Edited by Heney Faiefield Osboen, Sc.D., Da 

 Costa, Professor of Biology in Columbia College. The 

 volumes of the series already published are as follows: 

 I. From the Greeks to Darwin. By Heney 

 Faiefield Osboen, Sc.D. Svo, Buckram, 

 $2.00, net. 

 II. Amphioxus and the Ancestry of the Ver- 

 tebrates. By Aethue Willey, B.Sc, 

 Tutor in Biology, Columbia College. With 

 a Preface by the Editor. With Hlustrations. 

 Svo, Buckram, $2.50, net. 



The Rise and Development of Organic 

 Chemistry. 



By Cael Schoelemmee, LL.D., F.E.S. Revised 

 Edition, edited by Aethue Smithells, B.Sc. 

 12mo, Cloth, $1.60, net. 



Essays in Historical Chemistry. 



By T. E. Thorpe, F.R.S., Professor of Chemistry 

 in the Royal College of Science, South Kensington, 

 London. Svo, Cloth, $2.25, net. 



Nature. 



A Weekly Hlustrated Journal of Science. Yearly 

 Subscription, $6.00. Single numbers, 15 cents. Sent 

 for two months, as a trial subscription, on receipt of 

 $1.00. 



%*■ "Nature " has just completed its first quarter- 

 century. The number for November 1st begins Vol- 

 ume 51, and contains an Introductory Article by the 

 Rt. Hon. T. H. Huxley, entitled "Past and 

 Peesent." 



The Psychological Review. 



Edited by J. Maek Baldwin and J. McKeen 

 Cattell, \vith the co-operation of Alfeed Binet, 

 John Dewey, H. H. Donaldson, G. S. Fulleeton, 

 William James, Joseph Jasteow, G. T. Ladd, 

 Hugo Mijnsteebeeg, M. Allen Staee, Cael 

 Stumpf and James Sully. Published bi-monthly. 

 Single numbers, 75 cents ; annual subscription, $4.00. 



The Physical Review. 



A Journal of Experimental and Theoretical Physics. 

 Conducted by Edwaed L. Nichols, and Eenest 

 Meeeitt. Issued bi-monthly. Vol. I., No. 1, July 

 — August, 1893. Price, 50 cents; annual subscrip- 

 tion, $3.00. 



Contributions to The Physical Review should be address- 

 ed to the Editors, Ithaca, N. Y. ; subscriptions to the Pub- 

 lishers, 60 Fifth Aveuue, New York. 



The department of New Books is a very important feature. 



MACMILLAN & CO., 66 FIFTH AVENUE, NEW YORK. 



