288 



SCIENTIFIC NEWS. 



[Mar. 23, iS 



DIARY FOR NEXT WEEK. 



Monday, March 26. — Society of Arts, Cantor Lecture, at 8 p.m. 

 — Alloys ; Piofessor Chandler Roberts- 

 Austen. 

 Bradford Naturalists' Society, at 7.30 p.m. 



— British Rodentia ; M r. F. Rhodes. 

 Birkenhead Literary and Scientific Society. 

 — The Pi OSS Writings of Mr. Louis 

 Stevenwn ; Mr. John I'axton. 

 Tuesday, March 27.— Society of Arts, Foreign and Colonial Sec- 

 tion. — The Panama Canal; Mr. J. Stephen 

 Jeans. 

 WeJTiesday, Mar. 28.— Civil and Mechanical Engineers' Society, at 

 7 p.m. — T/ie Development of Machinery 

 in relation to Hand Labour ; Mr. Ambrose 

 A. Myall. 

 Cardiff Amateur Photographic Society, at 8 

 ^.m.— Lantern Slides aiid How to Make 

 them ; Mr. W. Davies. 

 Dundee Naturalists' Society, at 8 p m. 

 Thurs lay, M-irch 2g.—Chem'icsL\ Society Anniversary Meeting. 



Camera Club, at S p.m.— StereoscoJ>ic Photo- 

 graphy ; Mr. A. Stroh. 

 Friday, March 30.— Good Friday. 



Camera Club. — Elementary Lecture on 

 Photography. 

 Saturday, March-^x. — 



SALES. 



The Charge for Advertisements in this Column is Sixpence Jor the 

 first sixteen words, and Sixpence for every j ucceeding eight words. 



Advertisements for this Column sliould be received by first post on 

 Tuesday to insure insertion in the following number. 



Crayon Sketch from any photograph (returned uninjure d), 

 15 by ir, IS. 2d., free. — Mr. Coulthard, Bathwick, Bath. 



Patterns. — 100 fretwork; 100 repousse; 200 turning; 300 

 stencils ; is. each lot. — Collins, Summerlays-place, Bath. 



Patents.— Nine months' protection, 50s. ; patent completed from 

 £6 los.— P. M. RoGhRS, 21, Finsbury Pavement. 



Microscopic Slides.^500 varieties, insects, diatoms, botanical, 

 etc, from 3s. doz. ; approval.— SuTER, Highweek Road, Totlen- 

 ham. 



Fretwork Carving.— Catalogue of all requisites and 500 

 miniature designs free, stamps. H.-\RGER Bros,, Settle. 



Electro- Plating and Gilding successfully taught. Every 

 lequisite supplied. — Address, Henkic, 234, Great Coimore-street, 

 Birmingham. 



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

 Address, Henkic, 234, Great Colmore-stieet, Birmingham. 



Meerschaum and Briar Pipes repaired, mounted, or cased ; 

 ambers fitted. — W. George, 324, Essex-road, Islington, London. 



Trouser Lengths, Ss . Cheap Cloth for Ladies' Dresses, 

 Mantles, Suits. Patterns free.— Hewitt, 27, Winfield, Leeds. 



Dynamo, 120-candle powder, improved armature, iocs. Photo. 

 5 stamps.— D. WALTON, Plebden Bridge, Yorkshire. 



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

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



Dynamo, so-cnidles, 285. ; lo-candles, 20s. Photo. 5 stamps 

 each — D. Walton, Hebden Bridge, Yorkshire. 



Large Assortment of Lathes, Planers, Drilling, Milling, 

 and various new inventions and tools. — Britannia Company, 

 100, Iloundsditch, London — All Letters, Britannia Tool Factory, 

 Colchester, England. Makers to the British Government. 



New Book on the Lathe, wiih notice of new appliances, metal 

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

 Britannia Company, Colchester. 



Minerals. — 12 named specimens, 2s. free ; 12 lias fossils, 2s. 6d. 

 — Chas. Wardingley, 30, Blackwood Crescent, Edinburgh. 



EXCHANGES. 



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

 Sixpence for the first twcntyfour words, and Threepence for 

 every succeeding eight words. 



Advertisements for this Column should be received by first post on 

 luesday to insure insertion in the following nvinher. 



Models, Scientific Apparatus, Tools, or Machinery taken 

 in exchange for new goods or work done to order.- -Butler Bros., 

 44, Elsden-ioad, Tottenham, London. 



SELECTED BOOKS. 



Charadriidac ; or, Plovers, Sandpipers, Snipes, and their 

 Allies. By Henry Seebohm. With numerous 

 woodcuts. London : H. Sotheran and Co. Price 

 £2 I2S. 6d. 



Natural History Object Lessons ; A Manual for Teachers. 

 By G. Ricks, B.Sc. London : Isbister and Co. 

 Frice 4s. 6d. 



Elements of Physiological Psychology : A Treatise of the 

 Activities and feature of the Mind from the Physical 

 and E.\pcrimental Point of View. By George _T. 

 Ladd. London : Longmans, Green, and Co. Price 



2 IS. 



Tenants of an Old Farm; Leaves from the Note Book of a 

 Naturalist. By Henry C. McCook, D.D. London : 

 Hodder and Stoughton. Price 6s, 



Old and New Astronomy. By Richard A. Proctor. 

 London : Longmans, Green, and Co. Part L Price 

 2S. 6d. 



Home E.xperiments in Science for Old and Young; 

 Including Mechanics, General and Molecular Physics, 

 Soap Bubbles and Capillarity, with Detailed Instruc- 

 tions in the Necessary Mechanical Operations and 

 Illustrations of the Experiments and Apparatus. By 

 T. O'Connor Sloane, E.M., A.M., Ph.D. London : 

 Sampson Low, Marston, Searle, and Rivington. 

 Price 6s. 



Egyptian Archceology. By Prof. G. Maspero and Miss 

 Amelia B. Edwards. With 309 illustrations. 

 London : H. Grevel and Co. Price los. 6d. 



Pccket Encyclopcedia : A Compendium of General Know- 

 ledge lor Ready Reference. 1,206 columns, upwards 

 of 25,000 References. London : Sampson Low, 

 Marston, and Co. Price 3s. 6d. 



Mathematical Instrununts : Their Construction, Adjust- 

 nmit. Testing, and Use Concisely E.xplaincd. By J. 

 F. Heather, M.A. Fourteenth Edition Revised. 

 With Additions by A. T. Walmisley, M.I.C.E, 

 With Numerous Illustrations. London : Crosby 

 Lockwood and Son. Price 2S. 



Management of Accumulators and Private Electric Light 

 installations. A Practical Handbook. By Sir David 

 Salomans, Bart. Third Edition. London : Whit- 

 taker and Co. 



Treatise on Photography. By Captain W. de W. Abney. 

 Fifth Edition. London : Longmans, Green, and Co. 

 Price 3s. 6d.' 



An Easy Guide to the Constellations; with a Miniature 

 Atlas of the Stars, and Key Maps. By the Rev. 

 James Gall. London and Edinburgh : Gall and Inglis 



NOTICES. 



The Title Page and Index to Vol. I., First Series, now 

 ready, price 6d. 



Binding Cases for Vol. I., First Series, price 2S. each. 



Binding Cases and Binding, Vol. I., First Series, including 

 Title Page and Index, price 3s. 



Vol. I., First Series, bound in cloth, with Title Page and 

 Index, 7s. 6d. — by post Ss. 



The Back Numbersof Scientific News can be obtained from 

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 138, Fleet-Street, London, E.C. Prices 6d. each, or by post 

 7d. for the First Series, and 3d. each, or by post 3^d., for the 

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