96 



SCIENTIFIC NE"WS. 



[Jan. 27, li 



free, the report of the Congress and the other ordinary 

 publications, such as the reports of the International Com- 

 missions, the proceedings, and excursion programmes. All 

 correspondence respecting the Congress should be addressed 

 to Mr. W. Topley, 28, Jermyn-street, London. 

 — Prize Essay on Drinking Waters. — In 1893 a prize of 

 ;^r,ooo, offered by the King of the Belgians, will be awarded 

 for the best paper on the method of providing large towns, 

 especially Brussels, with a cheap and abundant supply of 

 good potable water. The competition is open to all the 

 world. Further information may be obtained on application 

 to the Minister of the Interior, Brussels. 



DIARY FOR NEXT WEEK. 



Monday, Jan. 30. — Society of Arts, Cantor Lecture, at 8 p.m. — 

 Yeast, Its Morphology and Culhire ; Mr. A. 

 Gordon Salamon, F.I.C. 



Bradford Naturalists' Society, at 7.30 p.m. — 

 Plant Lore ; Mr. B. Spencer. 



London Institution, at 5 p.m. — The Ptole- 

 mies ; Rev. William Benham, B.D. 

 Tuesday, Jan. 31. — Society of Arts. Applied Art Section, at 

 8 p.m. — The Monumental Use of Bronze ; 

 Mr. J. Starkie Gardner, F.G.S. 



Royal Institution, at 3 p.m. — Before and 

 After Darwin ; Professor G. J. Romanes, 

 F.R.S. 

 Wednesday, Feb. i. — Society of Arts, at 8 p.m. — Tlie Sweating 

 System, or the Functions of the Middlejnan 

 in Relation to Labour ; Mr. D. F. Schloss. 



Entomological Society, at 7 p.m. — The 

 Lepidoptera ofSikkim ; H. T Elwes, with 

 Notes on Seasonal and Local Disttibiition, 

 Mr. O. H. O. Moller. 



Civil and Mechanical Engineers' Society, at 

 7 p.m. — On the Use of Amjnonia as a 

 Refrigerating Agent; Mr. T. K. Light- 

 foot, M.I.C.E. 



Dundee Naturalists' Society, at 8 p.m. — The 

 Birds of Balj^ay ; Mr. R. W. Kerr. 

 Thursday, Feb. 2. — Chemical Society, at 8 p.m. 



Royal Society, at 4.30 p.m. 



Institution of Mechanical Engineers, at 7-30- 

 Annual General Meeting. — On Lrrigating 

 Machinery on the Pacific Coast ; Mr. John 

 Richards. 



London Institution, at 6 p.m. — Atlantic and 

 British Weather; Mr. Robert H. Scott, 

 F.R.S. 



Royal Institution, at 3 p.m. — Art Educa- 

 tion; Mr. II. Herkomer. 



Camera Club, at 8 p.m. — Photographing by 

 Artificial Light ; Mr. J. F.Roberts. 

 F-i-iday, Feb, 3 —Institution of Mechanical Engineers, at 7.30 

 p.m. — On the Positieti and Prospects of 

 Electricity as Applied to Engineering ; 

 Mr. William Gei^el.— Third Repoi-t of the 

 Research Committee on Friction : Experi- 

 ments on the Friction of a Collar Bearing. 



Royal Institution, at 9 a.m. — Ancient Micro- 

 scopes ; Mr. Frank Crisp. 



Royal United Service Institution, at 3 p.m. 

 — Speed as a Factor in Naval Warfare ; 

 Rear-Admiral the Hon. Edmund R. Free- 

 mantle, C.B. 

 Saturday, Feb. 4.— Royal Institution, at 3 p.m. — Experimental 

 Optics; Lord Rayleigh, F.R.S. 



SALES. 



The Charge for Advertise?nents in this Column is Sixpence for the 

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

 AdvertiseTnents for this Column should be received by first post on 

 Tuesday to insure insert ioJi in the following mnnber. 



Agents Wanted. — Morgan's Celebrated Improved Boiler Fluid 

 Composition. Fifteen years' success. — W. H. Morgan, Chemical 

 Engineer, Gloucester. 



Before deciding, send 2d. for list of Second-hand Lathes, 

 Fret-saws, Mechanics' Tools.— Britannia Co., Colchester 

 Makers of Engineers' Tools to the British Government. 



Large assortment of Tools, etc., on view, 100, Houndsditch, 

 London. — All letters to Britannia Works, Colchester. Bona- 

 fide makers of 300 varieties. 



Meerschaum and Briar Pipes Repaired, Mounted, or Cased ; 

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



Poultry, Pigeon, and Rabbit Nest Pans, Water Fountains, 

 Feeding Troughs. Illustrated list free. — Pratt, Stoneware 

 Works, Dudley. 



Trouser Lengths, 5s. Cheap Cloth for Ladies' Dresses, Mantles, 

 Suits. Patterns free. — Hewitt, 27, WinSeld, Leeds. 



Minerals, or Lias, or Carboniferous Fossils. — 12 named 

 specimens, 2s. 6d., free. — C Wardingley, 30, Blackwood-crescent, 

 Edinburgh. 



Gilding and Plating Taught. — Perks, 47, Alexander-road, 

 Richmond, Surrey. 20 years" practical experience with leading firms. 



Electro - Plating and Gilding successfully taught. Every 

 requisite supplied. — Address, Henric, 234, Great Colmore-street, 

 Birmingham. 



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

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



Castings, Parts, Materials, and Finished Models. — 

 Catalogue, 2d. — Butler Bros., 44, Elsden-road, Tottenham, 

 London. 



Mesmerism. — " This book is a very good one. Any one can 

 learn the art from it." — Weekly Budget. 2s. 6d. — W. Thomas, 22, 

 Clarendon-road, Anlield, Liverpool. 



Crayon Sketch from any photograph (returned uninjured),, 

 correct likeness, 15 by 11, is. each. Postage of one or more, 2d. — 

 Mr. Coulthard, Bathwick, Bath. 



Mechanics' Specialities. — 20 large sheets fretwork patterns, 

 7d. ; 200 turning patterns, is. ; 300 stencils, is. —Below. 



Fifty Conjuring Tricks, is. ; 100 experiments, is. ; photo- 

 graphs too eminent women, is. — Collins, Summerlays-place, Bath. 



EXCHANGES. 



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

 Sixpence for the first twenty-four words, and Threepence far 

 every succeeding eight words. 



Advertisements for this Column should be received by first post on 

 Tuesday to insure insertion in the following number. 



Models, Scientific Apparatus, Tools, or Machinery taken 

 in exchange for new goods or work done to order. — Butler 

 Bros., 44, Elsden-road, Tottenham, London. 



BOOKS RECEIVED. 



Management of Accumulators and Private Electric Light 



Installations — A Practical Hand Book. By Sir 



David Salomons, Bart, M.A., A.LC.E., M.S.T.E. 



Third Edition, revised and enlarged. London : 



Whittaker and Co. 

 Biliousness : its Causes and its Rational Treatment. By 



A. E. Bridger, B.A., M.D,, F.R.C.P. London: 



Henry Renshaw. 

 Playground of Science. A Series of Novel and Interest- 



tJig Experiments. By Johnston Stephen. London : 



Truslove and Shirlej'. 

 Tlie Naturalists Diary. A Day Book of Meteorology, 



Phenology and Rural Biology. Arranged and 



Edited by Charles Roberts, F.R.C.S., L.R.C.P., etc. 



London : Swan Sonnenschein, Le Bas and Lowry. 

 Elementary Text-Book of Physiography. By W. Mawer, 



F.G.S. London : John Marshall and Co. Hull :. 



Elsom and Co. 

 Schools of Forestry in Germany. With addenda relative 



to a desiderated British National School of Forestry 



compiled by Rev. John Croumbie Brown, LL.D. 



Edinburgh : Oliver and Boyd. London : Simpkin 



Marshall and Co. 

 Animal Biology. An Elementary Text Book. C. Lloyd. 



Morgan. London : Rivingtons. 

 Short Studies from Nature. London : Cassell and Co. 



