SCIENCE- GOSSIP. 



BIRKBECK INSTITUTION 



Bream's Buildings, Chancery Lane, E.C. 



Science Classes with Practical Work. 



Day and Evening Glasses for University 



ot London B.Sc. ; Prelim. Scientific, Inter. M.B. 

 Examination and for Conjoint Board, Dental and 

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 Evening Classes in all stages for Science and 

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Highly-equipped Laboratories. 



Chemistry, Physics, Biology (Zoology and Botany), 

 Metallurgy, Geology and Mineralogy, Microscopy. 

 Prospectus free. Calendar 6d. (by post 8d.), 

 on application to Secretary. 



THE JOURNAL OF G0NGH0L0GY 



Being the Organ of the Conchological Society 

 of Great Britain and Ireland. 



Hon. Secretary and Editor : 



W. E. HOYLE, M.A., 



The Owens College, 



Manchester. 



Hon. Treasurer : 



E. D. BOSTOCK, 



Tixall Lodge, 



■Stafford. 



LONDON : Dulau & Co., 37 Soho Square, W. 



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MANCHESTER : J. E. Cornish, St. Ann's Square. 



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SECOND-HAND BOOKS. 



JOHN WHELDON & CO., 



38 GREAT QUEEN STREET, LONDON, W.C., 



can supply most Books on the various branches of 



NATURAL HISTORY AND SCIENCE 



in good condition at moderate prices. 

 STATE WANTS, OR CATALOGUE SENT POST FREE. 



TheTrish Naturalist. 



A Monthly Journal of General Irish Natural History. 

 BOTANY. ZOOLOGY. GEOLOGY 



Edited by Geo. H. Carpenter, B.Sc, and 

 R. Llovd Praeger, B.A. 

 This Magazine should be in the hands of all Naturalists interested 

 in the distribution of animals and plants over the British Islands 



Dublin : EASON & SON, 40, Lower Sackville Street, to which 



address subscriptions should be sent. 



London : Simpkin Marshall, Hamilton, Kent & Co. 



MICROSCOPIC OBJECTS 



(Natural History and Scientific). 



New Series of 12 slides each for exhibition purposes now ready. 

 4s. per series, post free. Single Slides 4d. List free. Approval. 

 Special terms for foreign post. 



FRANK P. SMITH, 



15 Cloudesley Place, Islington, London, N. 



MASONS 



MICROSCOPICAL 

 . . . PREPARATIONS. 



Series of 9 doubly stained Botanical Sections : 6 Insect Dissections ; 

 18 Miscellaneous objects. 1 1 per Series. Quality Guaranteed. 



All beginners should read " Practical Hints on Mounting," 6d. 



Mason's " S.W." Series Mounted Specimens for Students, 



12 objects in handsome case, lying flat, 10/6, cheapest and best. 



R. G. MASON (ja's'/swift), 69Park Bd., Clapham, S.W. 

 MICRO PETRQLOG Y. 



A MOUNTED SECTION OF LLANYNYNECH LIMESTONE, 



CONTAINING UNIQUE FOSSIL REMAINS, 



Post free, 1s. 4d. 



6 UNMOUNTED ROCK SECTIONS, Illustrating Crystalline, 



Vitreous and Altered Eruptive Rocks. 



See Rutley's " Studies of Rocks. " 



With Full Instructions for Mounting, 3s. 3d. 



MASON, 69 PARK ROAD, CLAPHAM, S.W. 



CITY OF LONDON COLLEGE 



(CITY POLYTECHNIC), 

 WHITE STREET, MOORFIELDS, E.C. 



{Near Moorgate Street). 



Principal : - SIDNEY HUMPHRIES, B.A., LL.B. 



FIFTY-SECOND SESSION, 1899-1900. 



Day and Evening Classes are held in ALL BRANCHES OF 

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 commercial subjects. 



There are CHEMICAL, BIOLOGICAL, and PHYSICAL 

 Laboratories for practical work. The art studio is lighted with 

 electricity. Students prepared for London University, Civil Ser- 

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The classes are open to both sexes. The Gymnastic and 

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 and Coffee Rooms open daily. Lectures and Entertainments are 

 given in the large hall every Thursday evening. Numerous 

 valuable prizes offered for competition annually. 



Prospectuses and all other information gratis on application. 



DAVID SAVAGE, Secretary. 



the journal A pp UED MICROSCOPY 



ILLUSTRATED 



Subscription, $1.00 per year, Foreign, gl.35. 



ISSUED MONTHLY. 

 The Journal deals only with the practical side of 

 microscopical technique and apparatus. It contains a 

 large amount of original matter from the best writers in 

 all the fields in which the microscope is used. Reviews, 

 abstracts and notices of foreign literature put the reader 

 in touch with the whole field of foreign and domestic 

 work. While the most advanced methods are recorded, 

 there are series of articles specially for beginners. 

 Sample Copies Mailed Free. 



THE JOURNAL 

 OF 



APPLIED MICROSCOPY 



P. O. Drawer, 1033. 

 ROCHESTER, N 



THE NATURALIST: 



(Originally founded 1833.) 



A Monthly Journal of Natural History for the Northern Countie 

 of England, viz. : — Northumberland, Durham, Yorkshire, Lincoln 

 shire, Nottinghamshire, Derbyshire, Cheshire, Lancashire, West- 

 moreland, Cumberland, and the Isle of Man. 



Conducted by — W. Denison Roebuck, F.L.S., with the assistance 

 of J. Gilbert Baker, F.R.S., F.L.S. ; W. Eagle Clarke, F.L.S., 

 M.B.O.U. ; Alfred Harker, M.A., F.G.S. ■ Charles P. Hobkirk, 

 F.L.S. ; George T. Porritt, F.L.S., F.E.S. ; and W. Barwell 

 Turner, F.R.M.S. 



Monthly, Sixpence ; by post, Sevenpenee. 



Annual Subscription, Six Shillings and Sixpence, post free. 



All Communications to be addressed— The Editors of " The 

 Naturalist," 250, Hyde Park Road, Leeds. 



Now ready, price One Penny, and Postage one Halfpenny 

 for every four copies. 



LABEL LIST OF THE BRITISH 5-BANDED 

 LAND-SHELLS AND THEIR VARIETIES. 



To which is added the Band formulas of Helix nemoralis and 



H. hortensis. Will also serve as an exchange list. 



Apply Editorial Department, Science-Gossip, no Strand, 



London, W.C. 



LIVING SPECIMENS FOR 

 THE MICROSCOPE. 



Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actino- 

 sphaerium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, 

 Melicerta, and many other Specimens of Pond Life. Price is. per 

 Tube. Post Free. Helix pomatia, Astacus, Amphioxus, Rana, 

 Anodon, &c, for Dissection purposes. 



THOMAS BOLTON, 



25 BALSALL HEATH ROAD, BIRMINGHAM. 



FOR SALE BY ORDER OF THE EXORS. 

 THE UNIQUE 



MICROSCOPIC SPECIMENS 



COLLECTED BY THE LATE 



MR. H. VIRTUE TEBBS. 



Selections can be made at 



C. BAKER'S, 244 High Holborn, London. 

 Telegrams — Optivorum, London. Telephone — 1427, Holborn. 



