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W. WATSON & SON'S 



NEW MICROSCOPE STAND (PATENTED), 



The most perfect Instrument for the employment of light at great 

 angle of obliquity ever introduced. 



W. & S.'s PATENT MECHANICAIi STAGE 



la graduated to degrees — Kotates concentric, and will revolve completely round, \rith any 

 instrument — -has mechanical movements in vertical, horizontal, and oblique directions, 

 and is the thinnest and most perfect mechanical stage ever introduced. 



See description in the Royal Microscopical Journal, April and Jime, 1881. 



Illustrated Catalogue of above, and aU descriptions of Microscopes and Apparatus, 



post free 2d. 



W. WATSON & SONS, 313, High Holborn, London, W.O. 



SUCCESSORS TO GEO. KNIGHT & SONS, 



73, FARRINGDON ST. (late of 2, Foster Lane, and 5, St. Bride St.). 



HOWS MICROSCOPE LAMP. THE MINIATURE MICROSCOPE LAMP. 



HOW'S STUDENTS' MICROSCOPE, £5 5s. THE POPULAR BINOCULAR MICROSCOPE, £12 12«. 



Rock Sections and othee Microscopic Objects. 



New and Second-liand Microscopes, OlDJectives, and Accessories. 



A Large Assortment by Ross, Beck, CottiNS, Swift, and other first-class Makers, on Sale, 



at a Great Reduction in Price. 



MICROSCOPICAL OBJECTS in great variety. Sp&ialitg. Phtsiologicai, and Pathological Tissues. 



A choice variety of prepared Physiological Sections ready for Mounting. 



PHOTOGRAPHIC LENSES, CAMERAS, and APPARATUS, by Ross, Daxlmetee. and all other esteemed 



Makers. Largest, Cheapest, and Best Stock in London. New Catalogues Post Free. 



SANDS (S HUNTER, 20, CRANBOURN STREET, LONDON. 



LIVING SPECIMENS FOR THE MICROSCOPE. 



GOLD MEDAL awarded at the FISHERIES EXHIBITION to 



THOMAS BOLTON, 57, Newhall Street, Birmingham. 

 SPECIMEN TUBE, ONE SHILLING. 



A Series of Twentt-six Tubes In course of Six Months (or as required) for a SuBSOKiPTroif, 

 ill advance, of £1 is. 



Portfolio of Drawingrsj Ten Parts, One Shilling' each. 



EDWARD WARD'S BROWN CEMEITT. 



This Cement was first introduced to Microscopists in a paper read before the Manchester Science Asso- 

 ciation, on Jan. 26th, 1880. Its success has been so marked that many imitations have been sold under the 

 liame or similar names. 



Purchasers should see that they are furnished with WARD'S Brown Cement, which may be obtained 

 from many Dealers, price \s. ; or direct from the Preparer, post-free, for Is. 3d. 



NEW SLIDE OF POLYZOA (BUGULA PLUMOSA), 



With tentacles extended, stained and mounted in Balsam. Post-free for Is. Sd. 

 EDWARD WARD, 249, OXFORD STREET," MANCHESTER (nearly opposite Owens College). 



NOTICE OF REMOVAL. 



THOMAS D, RUSSELL, late of Essex Street, Steand, has removed his extensive 

 Collections of British and Foreign Shells, Crustacea, Bchinoderms, Corals, Fossils, 

 Minerals, Eocks, Microscopic Objects, &c., to more convenient and spacious premises, 



KEAE THE NeW GENERAL POST OFFICE. 



THOMAS D. RUSSELL, 78, Newgate Street, Londan, E.G. 



