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SCIENTIFIC NEAVS. 



[May II, iS 



SALES. 



The Charge for Advertisements in this Column is Sixpence for the 

 first sixteen words, and Sixpence for every succeeding eight words. 



Advertisements for this Column should be received by first post on 

 Tuesday to insure insertion in the following mimber. 



Large Assortment of Lathes, Planers, Drilling, Milling, 

 and vaiious new inventions and tools. — Britannia Company, 

 100, Houndsditch London. — All letters, Britannia Tool Factory, 

 'Colchester, England. Makers to the British Government. 

 • New Book on the Lathe, with notice of new appliances, metal 

 spinning, milling, etc , in an ordinary lathe ; 3s. post free. — 

 Britannia Company, Colchester. 



Chisel Steel, i to 5 feet bars, | to ij octagon, 13s. per cwt. — 

 Gilbert, Oxford Road, Sheffield. 



Best Cast Steel for tools, taps, and dies, drills, 6d. per lb. — 

 •Gilbert, Oxford Road, Sheffield. 



Rubber Stamps for business or private use ; excellence 

 guaranteed ; lists id. — A. H. Pashley, 12-14, Ecclesall Road, 

 Sheffield. 



Electro - Plating and Gilding successfully taught. Every 

 lequisite supplied. — Address, Henric, 234, Grtat Colmore-street, 

 Birmingham. 



Practical Hints on Electro-Plating, etc. — i stamp. — 

 Address, Henric, 234, Great Colmore-street, Birmingham. 



Dynamo, 120 candle power, improved armature, loos. Photo. 

 5 stamps. — D. Walton, Hebden Bridge, Yorkshire. 



Dynamo, 6o-candles, improved armaturt, 45s. ; photo. 5 stamps. 

 Castings, lamps, etc. ; wire from is. 4d. per lb. 



Dynamo, 30-candIes, 28s. ; lo-candles, 20s. Photo. 5 stamps 

 ■each — D. Walton, Hebden Bridge, Yorkshire. 



Meerschaum and Briar Pipes Repaired, Mounted, or cased, 

 ambers fitted. — W. George. 324, Essex Road, Islington, London. 



Fretwork, Carving, Turning, Woods, Tools, and all 

 requisites. Catalogue with 700 illustrations, 6 stamps.- Harger, 

 Bros., Settle. 



Second-hand Lathes, and other tools, offered cheap ; on 

 view, Britannia Co., 100, Houndsditch, London, — Send 2 stamps 

 -for list, to Britannia Works, Colchester. 



" Inventors' and Manufacturers' Patent and Trade Mark 

 Pocket Guide," by G. C. Marks, C.E., 13, Temple Street, 

 Birmingham. Four stamps. 



"Sheet Metal Worker's Instructor," Warn's; few copies, 

 cheap, covers slightly soiled. —94, St. Augustine's Road, N.W. 



Minerals, Fossils (Carboniferous, Lias), 12 specimens, 

 2s. 6d. ; polished specimens, 6d. to gd. — C. Wardingley, Black- 

 wood Crescent, Edinburgh. 



Sin. Burnishers, 7s. 6d. ! Silver steel bar, warranted : 6\ in,, 

 I2S. 6d. ; 9 in., 20s.; 15 in, 40s. — C. C. Vevers, Horsforth, 

 Leeds. 



Photographic Specialities, cheap and good. — Stills, head- 

 rests, backgrounds, washing machines, lamps, shutters, etc. Lists 

 free. — C. C. Vevers, Horstorth, Leeds. 



Microscope wanted, good student's ; send particulars and price 

 to Richard Carter, Royal Hotel, Falmouth. 



Mica or Talc cut for all purposes. Mica chimneys, Mica 

 covers, etc. — C. Johnson, 87, New Oxford Street, W.C. 



EXCHANGES. 



Exchange Notices will be inserted in this Column at the rate of 

 Sixpence for the first twenty four "words, and Threepence for 

 every succeeding eight words. 



Advertisement! for this Coluinn should be received by first post on 

 Tuesday to insure insertion in the following number. 



X, Electro-Plating and Gilding taught to perfection; system 

 inexpensive ; distance no object ; exchange for anything useful 

 (stamp). — Perks, 47, Alexandra Road, Richmond, Surrey. 



SELECTED BOOKS. 



Forms of Animal Life. A manual of Comparative 

 Anatomy, with Descriptions of Selected Types. By 

 the late George Rolleston, D.M., F.R.S. Revised and 

 enlarged by W. Hatchett Jackson, M.A. Second 

 Edition. London, Clarendon Press. Price 36s. 



A Text-Book on Steam and Steam Engines. For the Use 

 of Students Preparing for Competitive Examinations. 

 By A. Jamieson, C.E., F.R.S.E. Prof of Engineering, 

 Glasgow Technical College. With 200 illustrations 

 and four folding Plates. Third edtion. London, 

 Charles Griffin and Co. Price 7s. 6d. 



The Fundamental Principles of Chemistry. Practically 

 taught by a new method. By Robert Galloway, 

 M.R.I.A., F.C.S. ; Honorary Member of the Chemical 

 Society of the Lehigh University, U.S. London, 

 Longmans, Green, and Co. Price 6s. 6d. 



Select Biological Memoirs. Memoirs on the Physiology of 

 Nerve, of Muscle, and of the Electrical Organ. 

 Translated under the superintendence of and edited 

 by J. Burdon-Sanderson, M.D., F.R.S. London, 

 Clarendon Press. Price 21s. 



Electric Light Arithmetic. By R. E. Day, M.A., Evening 

 Lecturer in Experimental Physics at King's College, 

 London : Macmillan and Co. Price 2s. 



Elementary Microscopical Manipulation. By T. C. White. 

 Illustrated. London: Roper and Crowley. Price2S.6d. 



Natural History Object Lessons : A Manual for Teachers. 

 By G. Ricks. London : Isbister and Co. Price 4s. 6d. 



The Hessian Fly, Cecidomyia destructor, in Great Britain 

 in 1887 : being mainly Reports of British Observa- 

 tions, with Illustrations from Life, and some means 

 of Prevention and Remedy. By Eleanor A. Orme- 

 rod. London : Simpkin and Marshall. Price 6d. 

 The Natural History of Plants. By H. Baillon, of 

 Paris. Vols. I. to VII., with 3,200 Wood En- 

 gravings. 25s. each. 



METEOROLOGICAL RETURNS. 



For the ten weeks ending Monday, April 30th, 1888, specially prepared for Scientific News from official reports. 



The highest and lowest temperatures observed during the pericd were 66 degs. at Cambridgs and Hereford, and 2 degs 

 at Braemar, Scotland, E. 



