528 



SCIENTIFIC NEWS. 



[June I, iS 



Ihursday June 7. — Royal Institution, at 3 p.m. — The Growth 

 ' and Sndpture of the Alp ; by Prof. T. G. 



Bonney. 

 Friday, June 8. — Royal United Service Institution, at 3 p.m. — 

 Military Cycling ; by Lieut.-Colonel A. R. 

 Savile. 

 Royal Institution, at 9 p.m. 

 Saturday, June 9. —Royal Institution, at 3 p.m. — Count Tolstoi 

 as Novelist and Thinker ; by Prof. C. E. 

 Turner. 

 Physical Society, at 3 p.m. — The Analogy 

 between Gases and Sulistaiices in Dilute 

 Solution ; by Prof. J. H. Van't Hoff. 



SALES. 



The Charge for Advertisements in this Column is Sixpence for the 

 first sixteen words, and Sixpence for every succeeding eighiwords. 



Advertisements for this Column should be received by first post on 

 Tuesday to insure insertion in the following number. 



Large Assortment of Lathes, Planers, Drilling, Milling, 



and various 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 applianes, metal- 

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

 Britannia Company, Colchester. 



Chisel Steel, i to 5 feet bars, | to \\ octagon, 13s. I'er cwt. — 

 Gilbert, O.xford Road, Sheffield. 



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

 Gilbert, Oxford Road, Sheffield. 



Electro - Plating and Gilding successfully taught. Every 

 lequisite supplied. — Address, IIenkic, 234, Great Col more-street, 

 Birmingham. 



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

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



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

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



Dynamo, 60-candles, improved armature, 45s. ; photo. 5 stamps. 

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



Dynamo, 30-CJndles, 28s. ; lo-candles, 203. Photo. 5 stamps 

 each — D. Walton, Hebden Bridge, Yorkshire. 



Meerschaum and Briar Pipes Repaired, Mounted, or cased, 

 ambers fitted. — \V. GEORGE, 324, Essex Road, Islmgton, 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. 



5ln. Burnishers, 7s. 6d. 1 Silver steel bar, warranted : 6J in., 

 I2S. 6d. ; 9 in., 20s.; 15 in-, 4CS. — C. C. Vevers, Horsforth, 

 Leeds. 



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

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

 free. — C, C. Vevers, Horslorth, Leeds. 



Patterns. — 100 Fretwork, 100 Repousse, 200 Turning, 300 

 Stencils, is. each. — Collins, Summerlays Place, Bath. 



Tandem and Cripper Frames, Diamond and Cross-Pattern 

 Safety Frames. Fittings of all kinds at lowest prices. — Trent 

 Cycle Co., Nottingham. 



Conjuring. — Good stock of apparatus cheap. Bishop's Great 

 Sealed Letter, etc.' Funny Ventriloquial Dialogues. — LocKYEAR, 

 Emsworth. 



Tricycle, front steerer, Coventry make, good condition, £^, 

 worth double. — Army Contractor, Granville, Sandgate, Kent. 



To Emigrants. — Beautiful double Breech-Loader, splendid con- 

 dition, 3 guineas, approval. — Hillsdon, Harbour House, Folkestone. 



EXCHANGES. 



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

 Sixpence Jor the first twenty four words, and Threepence for 

 every sticceeding eight words. 



Advertisements for this Column should be received by first post on 

 Tuesday to insure insertion in tlie following number. 



Splendid Solar Microscope, in case, by Nairne, six powers. 

 Exchange photographic apparatus.- RiDOUT, Sunbuiy Common. 



100 Geological Specimens, named. Exchange, 103. 

 Approval. — Holden, Hoyland Nether, Barnsley. 



SELECTED BOOKS. 



A Treatise on Heat. With numerous Woodcuts and 

 Diagrams. By Balfour Stewart, LL.D., F.R.S., late 

 Professor of Natural Philosophy at the Owens 

 College, Manchester. Filth edition. London : 

 Clarendon Press Warehouse. Price 7s. 6d. 



Asbestos. Its Production and Use. With some Account 

 of the Asbestos Mines of Canada. By Robert H. 

 Jones. London : Crosby, Lockwood and Co. 

 Price IS. 



An Elementary Text-Book of Practical Metallurgy. By A. 

 R. Go war. London: Chapman and Hall. Price 3s. 



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

 use of Students Preparing for Competitive Ex- 

 aminations. By A. Jamieson, C.E., F.R.S.E., Prof, 

 of Engineering, Glasgow Technical College. With 

 200 Illustrations and four plates. London : Charles 

 Griffin and Co. Price 2s. 6d. 



Tropical Africa. By Professor Henry Drummond, 

 F.R.S.E. London: Hodder and Stoughton. Price 6s. 



First Lessons in Science (Astronomy). By the Right Rev. 

 John WiUiam Colenso, D.D., Bishop of Natal, 1853- 

 1SS3. London: Ridgway. Price is. 



Metalliferous Minerals and Mining, By D. C. Davies, 

 F.G.S. With 148 Engravings. Fourth edition. 

 London : Crosby, Lockwood and Co. Price 12s. 6d. 



METEOROLOGICAL RETURNS. 



For the ten weeks ending on Monday, May 21st, 1888, specially prepared for Scientific News from official reports. 



The highest temperature observed during the last week of the period was 80 degs. at Bawtry, being a highe 

 empe rature than any observed since the last week of August, 1887. 



