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OS/CIOI^OSOOI^IO OD3J-EOTS- 



Claseified Catalogue. NEW EDITION FOB 1880. Tost Free and Gratis. 



Specimens of the highest attainable perfection in every branch of Microscopy. New and 



Rare Diatomacese. Test and Binocular Objects. Moller's Typen Plattes. 



Microscopes, Achromatic Objectives, and all Materials and Instruments for Mounting. 



EDMUND WHEELER, 48 B, Tollington Road, Holloway, London, N. 



QUEKETT'S (J.) LECTURES ON HISTOLOGY, 



Delivered at the Royal Collepe of Surgeons, describing the Elementary Tissues of Plants and Animals, the 

 Structure of the Skeleton of PLiuts and Invertebrate Animals. Upwards of 400 Engravings. Two Vols, in 

 One, thick Svo, cloth, "Js. M. (pub. £1 8«. 6d.) ; post free, 8s. Ad. 



" Wiih this work every microscopist should be acquainted. . . . The woodeuta of microscopical ol^ects in 

 this VFork have not been sm^passed." — Science-Gossip. 



JOHN WHELDON, NATURAL HISTORY BOOKSELLER, 



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



PATENT RADIAL TRAVERSING 



ACHROMATIC SUBSTAGE ILLUMINATOR, 



For Projecting Two Rectangular Pencils of Light on the Object. 



At same time greater angle of obliquity can be obtained by Swift & Son's contrivance than by any swinging 

 stage hitherto made. The same can also be used above the stage for the illumination of opaque objects. It 

 can instantly be detached from the microscope, and is capable of being fitted to any modem Instrument where 

 the stage is sufiSciently thin. Illustrated Circular for Stamp. 



ELEVENTH EDITION of CATALOGUE just from Press, with many Improved 

 Forms of Microscopes and Apparatus, for Six Stamps, 



UNIVERSITY OPTICAL WORKS, UNIVERSITY STREET, LONDON, W.C. 

 MICROSCOPICAL SPECIALITIES. 



ARTHUR C. COLE (F.R.M.S.) & SON, 



Having completed arrangements to increase both the supply and variety of their 

 Preparations, beg to announce that their VAKIOUS SEEIES, a most extensive 

 assortment of PATHOLOGICAL and PHYSIOLOGICAL specimens, CHEMICAL 

 COMPOUNDS, DIATOMACEAL and MISCELLANEOUS OBJECTS, can now 

 be obtained from all the principal opticians in London and the provinces, and by 

 whom Lists will also be furnished on application. For wholesale terms apply to 



St. Domingo House, 53, Oxford Gardens, UTotting Hill, London, W. 



SUCCESSORS TO GEO. KNIGHT & SONS, 



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



HOW'S MICROSCOPE LAMP. THE MINIATURE MICROSCOPE LAMP. 

 HOW'S STUDENTS" MICROSCOPE, £5 6». THE POPULAR BINOCULAR MICROSCOPE, £12 lit. 



Rock Sectioks and other Microscopic Objects. 



]>J[ICI10SOOI?IC SPECIALITIES 



ILLUSTRATING STRUCTURE IN THE VARIOUS BRANCHES OP 



iSSffr, ENTOMOLOGY, ^\-r-',., 



showing Internal PREPARED AND SOLD BY post free, 



2/and3Teach. FREDERIC ENOCH, on application. 



30, EUSSELL KOAD, SEVEN SISTEES EOAD, LONDON, N. 



