IV. 



KNOWLEDGE & SCIENTIFIC NEWS. 



[February, 1907. 



■NOMV FIEJ^.D'V- 



STUDIES IN 

 MIGROPETROGRAPHY. 



Iiiipiiiiil Sun, li'illi rull-Piigi- I'Lilis III Saliiial Cli'iin, hfy 

 PUtes, U.vf'laiuitorv Text timi IS Microscopical Preparations. 



BEAUTIFULLY COLOURHD PLATKS. 



Twelve Monthly Parts, post free to Subscribers 

 only, £4 4 O net. 



Subscribers wiio ili-sirc to pav ihcir subscriptions by inst.il 

 nients, MONTHLY orgUAKTICKLV, may do so by paying 

 Sfven Shillings monthly or dne duiricaiiuarterly in advancf. 



SUBSCRIBERS ORDER FORM WILL BE SENT ON REQUEST, POST FREE, 



SPECIAL NOTICE. 



IT HAS BHHN SUaanSTEI) that many students 

 would like to possess ME(iASCOPIC SPECIMENS 

 of the Rocks, &c., for their collections, so as to 

 familiarise themselves with the naked-eye appear- 

 ances of the objects. Such has therefore been 

 arranged, and 



THE SERIES OF 48 SPECIMENS will be 

 available to subscribers only, at £1 1s. Od. net, 

 in advance. Single specimens may be purchased 

 by subscribers or non -subscribers at 9d. each, 

 post free, from : — 



ROBERT SUTTON, 



PUBLISHER, 

 43, The Exchange, Southwark, London, S.E. 



Charles Griffin^^^ Ld^Publishers. 



Nmw Ki-Aiiv r.jinrii lOiiiTinN, Revised. Vol. 1.7s i,il. Net. 



THE CHEMISTRY OF GAS MANUFACTURE: 



A Hand E3nok on the Pi-otlncl ion , Puridcat Ion, unci Testlnj; of 



Mliinitnullng Gaa. and the Abt>ay of the Bye Products of 



Gas Manufacture. 



My \V. J. .ATKINSON lUlTTKKI- 1 KM). M.A.. F.I C. F.C.S., formrrly ll(;i(l 



Chemist, Gas Works, iJeckton, London, H. 



"The best work of its kind which we have ever had the pleasure of 



]rsr PriiusKLi). In L;u-f.;t? (r Svo. H;iiidsnmc ("Ir)lli. .js 6tl. net. 



THE THERMO - DYNAMIC PRINCIPLES OF 

 ENGINE DESIGN. 



liv I-IONICI, M. IIOHliS, linijincer-Liciilirianl, K.N,, Instructor in Ap|ilieil 

 Nicchiinics and Marine Kn^inc Design at tli'- K(»y,il Naval Collcf^o, Greenwich. 



TiiiKn I'jUTioN, Revised and Iuil;irged. Fully IlUistialed, I2s, («1. 



PAINTERS' COLOURS, OILS & VARNISHES. 



"file only pRKlisli work that satisfactorily treats of tlie M.imil,icliire uf Oils 

 Colours, and Pigments."— Cliemieal Tiade .Journal. 



SiiCONi) KiiiTiON. In r„irge Svd. Handsome Clotli. With 

 4 riates and Several llltistrations. i6s. net. 



THE CHEMISTRY OF INDIA RUBBER: 



A Treatise on the Nature of India Rubher. Its Chemical and Physical 



Examination, and the Detcrrtii nation and Valuation of India Rubber 



Substitutes. 



Including the Outlines if ti Tlironj on Vu'canisation. 



By CARL OTTO WI:Hk"r, Ph.D. 



" Replete with scieiitihc and also with technical interest. . . The section 



i-n physical properties is a complete nsiimr of every thing known on the 



'^iihject.*' — IndiiL'ruhber Journal 



Now RiiADV. T\\cnl\ tliirtl Anmial Issue. 7s 6d. 



THE OFFICIAL YEAR-BOOK 



OF THE SCIENTIFIC AND LEARNED SOCIETIES OF CHEAT BRITAIN AND IRELAND. 



Compiled from Offlcial Sources. 



"One of tlic most Kcniiinely iisiful wiirlis for tlie library or ilesk."— Timi:i. 



London : CHARLES GRIFFIN & Co., Ld., Exeter Street, Strand. 



KAr'TTUDI A • '''^'■' li^es ^r"i useful labours are being 

 DA^ 1 Cl\IA f described in a work appearing in num- 

 ■:^=rr^^:^^^^==- bers, i/- each. 



Nos. 17 & 18-VITAL CHEMISTRY : General. 



// all live as they ought bacteria will not harm us. 

 //any live as they ought not bacteria are the scourges wherewith we are 

 whipped. 



A. RAMSAY, 



For Prospectuses and Particulars apply to 



15, Lawn Crescent, Kew Gardens, Surrey. 



SYMONS'S METEOROLOGICAL MAGAZINE. 



Edited by HUGH ROBERT HILL, D.Sc. 



JLn IlloBtrated Journal of Meteorology published on the 16th of every month. 

 Climatological and Eainfall Tables of the British IsIandB and the British 

 Empire are published monthly, together with the latest news of the progress of 

 Meteorological Science in all countries, Correspondence, and Reviews of Books. 



A Bpeclmen number will be sent free on application to the Editor at 

 62, Camden Square, London, N.W. 



SiihteHption 5«. per annum, post free. Single number, price id. 

 EDWARD STANFORD, 12, 13, and 14. Long Acre, W.C. 



JUST PUBLISHED. 



The Scientific Papers of 

 j. willard gibbs, 



Ph.D., LL.D., 

 Formerly Professor of Mathematical Physics in Vale University. 



With Photogravure I'ortrait. 2 Vols, royal Svo (sold separately). 



Vol. I. THERMODYNAMICS. 24s. net. 



Vol. II. DYNAMICS, VECTOR ANALYSIS and MUL- 

 TIPLE ALUEBRA. ELECTRO-MAGNETIC THEORY 

 OF LIGHT, &c. 18s. net. 



PROSPECTUS SENT ON APPLICATION. 



LONGMANS, GREEN & CO., 39, PATERNOSTER ROW, LONDON, E.G. 



NOW READY. 

 fm- A MOST ACCEPTABLE GIFT AT ANY TIME. 



KNO\A(LEDGE 



ILLUSTRATED SCIENTIFIC NEWS 



VOLUME FOR 1906. 



OVER 300 Pages and 200 illustrations, 



many being Full Page Plates. 



Bound in Blue Cloth, Gilt Design and Lettering. 8s. 6d. net. 

 Post Free within the United Kingdom. 



Publishing Office: 27, CHANCERY LANE, LONDON. 



ABRIDGED EDITION OF MYERS' HUMAN PERSONALITY. 



In One Volume, Svo , IO3. 6d. net. 



HUMAN PERSONALITY AND ITS 

 SURVIVAL OF BODILY DEATH 



By FREDERIC W. H. MYERS. 



Edited and Abridged by his Son, 



LEOPOLD HAMILTON MYERS. 



LONGMANS, GREEN & CO., 39, Paternoster Row, London, E.C. 



THE SCIENCE YEAR BOOK 



FOR 1 907. 



See Advertisement on page ix. 



