October i8, 1889.] 



SCIENCE. 



271 



from having been their hater, and writes this bool< that others may 

 see the cat in all its possibilities as a useful, attractive, and affec- 

 tionate domestic animal. 



At the present time, when the power cats possess of finding 

 their way home over supposed to be unknown roads is receiving 

 some discussion, it is interesting to note that at a race of this kind 

 held near Liege, Belgium, in iS6o, the winner was a blind cat. 



But it is not alone of cats as cats that our author tells us : he 

 gives us also a glossary of terms of which the word " cat " forms 

 a part. In fact, " Our Cats and all about Them " is a title well 

 borne out by the contents, so far as such information as the or- 

 dinary reader is likely to seek is concerned. 



A Treatise on Ordinary and Partial Differential Eqiiatio7is. 



By William Woolsey Johnson. New York, Wiley. 8°. 



$3-50. 

 This treatise on differential equations is in continuation of the 

 series of mathematical text-books, by the same author, of which 

 have already appeared the differential and integral calculus. Pro- 

 fessor Johnson is professor of mathematics at the United States 

 Naval Academy at Annapolis, and it may be that some will trace 

 in the book methods which are said to be characteristic of the 

 United States Army and Navy mathematics ; but it must be said 

 that the plan pursued is likely to lead to a clearer understanding 

 by the student. The object is to give a knowledge of the subject, 

 so far as it is likely to have practical application ; and in this it is 

 safe to say that Professor Johnson has succeeded. 



A Graduated Course of Natural Science, Experimental and 

 Theoretical, for Schools a?id Colleges. Part I. By Benja- 

 min Loewy. London and New York, Macmillan. 12°. 60 

 cents. 

 Those who are trying to introduce sane methods of science- 

 teaching into our schools, will find in Mr. Loewy 's little book much 

 that is suggestive and of value. Mr. Loewy was at one time the 

 science master in the recently discontinued International College 



just out of London, and has had twenty years of experience in 

 teaching physics and chemistry to large classes, both in the lecture- 

 room and in the laboratory. In this first part of his series he con- 

 fines himself to the physical phenomena which arise on account 

 of the mutual attraction of particles of matter, but he has limited 

 himself to those interactions of matter that his experience shows 

 him to be really intelligible to young beginners. This sketch of 

 the author's purpose may be misleading, as the following summa- 

 tion of some of the chapter-heads will show : " Pressure in Li- 

 quids," " Filtration," " Cause of Winds," " Hard and Soft Water,"' 

 " Action of Animals and Plants on Air," etc. 



AMONG THE PUBLISHERS. 



The Longmans will publish shortly two volumes of Americaa^ 

 short stories, — " Gerald French's Friends," tales of California. 

 Irishmen, by George H. Jessop ; and " A Family Tree and Other 

 Stories," by Brander Matthews. 



— The October number (No. 43) of the Riverside Literature- 

 Series (published quarterly during the school year 1889-90 at 15. 

 cents a number, by Houghton, Mifflin, & Co., Boston) contains the- 

 " Story of Ulysses among the Phseacians," from William Cullen: 

 Bryant's " Translation of Homer's Odyssey." This selection,, 

 which has been described by one of our most famous Greek schol- 

 ars as the finest and at the same time simplest bit of imaginative- 

 writing in all Greek literature, is a complete story in itself. It tells 

 of Ulysses' discovery by Nausicaa, the daughter of King AlcinoUs, his 

 reception by the king, the festivals given in his honor, his song'of 

 the Trojan Horse and the Fall of Troy, and his departure for his 

 home in Ithaca, and gives a most excellent picture of the life, manners,, 

 and customs of the ancient Greeks. This number of the Riversider 

 Literature Series will be found of especial value for use in schools. 

 It is rarely possible to make a selection from a great poem like the 

 "Odyssey" at once so complete in itself, so fascinating, and so in- 

 structive, as is this " Story of the Adventures of Ulysses among, 

 the Phseacians." 



WATTS' 



DICTIONARY OF 



CHEMISTRY 



Revised and entirely rewritten by 



M. M. PATTISON IVLUIR, M.A., F.R.S.E., 



Fellow, and Prse'ector in Chemistry, of Gonville and Cains College, Cambridge, and 



H. FORSTER MORLEY, M.A , D.Sc, 



Fellow of University College, London, and Professor of Queen's College, London, Assisted by 

 eminent contributors. 



IN FOUR VOLUMES, HALF BOUND. VOLUMES I. AND IL NOW REiDY. 

 Vol. I. (Abies — Chemical Change). Octavo, pp. xx-752. $14 50. 



Vol. II. (ChenochoJic Acid — Indigo). Octavo, pp. xii-760. $14.50. 



PARTI A^L LIST OF CONTRIBUTORS. 



LOTHAR MEYER, Ph.D., Profesfor of 



Chemistry In the University of Tubingen. 



C. O'SULLIVAN, F.R.S., Burton on- 

 Trent. 



T. E. THORPE, Ph.D., F.R.S., Professor 

 of Chemistry at the Royal School of Mines. 



RAPHAEL MELDOLA, F.R.S., Pro- 

 fessor of Chemistry in the Flnsbury Technical 

 College. 



E. RAY LANKESTER, M.A, F.R.S., 

 Professor of Zoology at University College, Lon- 

 don. 



W. D. HALLIBURTON, M.D., B.Sc, 

 Assistant Professor of Physiology at University 

 College, London. 



THOMAS STEVENSON, M D., Lecturer 

 on Forensic Medicine at Guy's Hospital. 



ARTHUR G. GREEN, Esq., F.I.C., Re- 

 search Chemist to the Atlas Works, Hackney 

 Wick. 



R. THRELFALL, M.A., Professor of Phy- 

 sics Id the University of Sydney, N. S. W. 



FRANK ■W. CLARKE, Esq., B.S.c, 

 Chief Chemist, United States Geological Survey. 



IRA REMSEN, Ph.D.. Professor of Chem- 



Istry in Johns Hopkins University, Balilmore. 



F. W.i RUDLER, F.G.S , Curator of the 



Museum of Practical Geology, London. 



Messrs. Longmatis, Green <£■ Co., witl be happy to send their Catalogues of Standard and Scientific 

 Works on application. 



LONGMANS, GREEN & CO., 15 East Sixteenth Street, New York. 



A Necessary Work of Reference 

 For Your Library. 



CHAMBERS'S 



ENCYCLOPAEDIA. 



A Dictionary of Universal Knowledge, 



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Volumes I., II. and III. Tiow Ready». 

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To \be completed in ten volumes, issued at Intervals. 



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