lxxvi 



HA R D WICKE ' S S CIENCE- G O SSI P. 



MICROSCOPES AND APPARATUS 



;for every class of investigation. 



Highest quality of Workmanship only. 



W. W. & SONS' EDINBURGH STUDENT'S MICRO- 

 SCOPE as supplied to Universities, &c, throughout the 

 World, is now made with the TRIPOD form of FOOT. 



Particulars on application. 

 W. W. & SONS' VAN HEURCK MICROSCOPE is 

 unsurpassed for Photo-Micrography and High-Power 

 Work. 



NOSEPIECES IN ALUMINIUM, very light and 

 compact. 



For Two Objectives, 20b. ; for Three Objectives, 35s. 

 Full Illustrated Catalogue of Microscopes and Apparatus 

 sent post free on application. 



NEW and INTERESTING MICROSCOPIC OBJECTS. 



£ s. d. 



Potato Fungus — Pcronospora . . . . . . . . . . . . . . . . 10 



Stem and Petiole of Virginia Creeper, showing defoliation .. .. .. .. 10 



Eye of Beetle, prepared to show multiplied images . . . . . . - . . . 16 



Drosera, with insects captured .. .. .. .. .. .. 16 



Streptococcus pyogenes . . . . . . . . . . . . . . . . 3 



Section through Nose and Jaw of Guinea Pig. showing Olfactory Region, Developing 



Teeth, Tongue, &c, in situ .. .. .. .. .. .. .. 19 



Larva of Trinidad Firefly, showing Illuminating Organs . . . . . . . . 2 



Rare Slides of Fo rami n if era, etc. 



Rotalia pulchella— Java, rare .. Is. 6d. Alveolina boscii— rare .. 16 



Sagrina virgula— very pretty . . 1j. 6d. Webbma clavata — rare . . 1 ti 



MiTioIina rupertiana .. .. Is. 6d. Ostracoda — Cythere Jonesii .. 16 



Type Slide of ioo Diatomaceae, with List of Names .. .. .. ..110 



Genus Slide of Navicula, ioo forms .. .. . . . . . . . . . 7 6 



/CLASSIFIED LIST, representing a Stock of 40,000 highest class Microscopic Objects, sent post 

 free on application. 



W. WATSON & SONS, Opticians to Her Majesty's Government, 



313, HIGH HOLBORN, LONDON, W.C., 

 [Established 1837.] AND 78, SWANSTON STREET, MELBOURNE, AUSTRALIA. 



X IITI PTMTTV 2 Gold Medals, Paris Universal Exhibition, 1889. 



A W A K 1 1 H II 2 Diplomas of Honor for Microscopes and Microscopic Objects, Antwerp International Microscopical 

 n.IIn.111/ JJ1/ Exhibition, 1891. And 



24 Gold and other Medals at the principal International Exhibitions of the world. 



DICTIONARIES. 



The Reader's Handbook of Allusions, References, Plots, and Stories. By the 



Rev. E. C. Brewer, LL.D. With an Appendix, containing a Complete English Bibliography. Crown 

 8vo, 1400 pages, cloth extra. 7s. 6d. 



Authors and their Works, with the Dates. Being the Appendices to " The Reader's 

 Handbook," separately. By the Rev. E. C. Brewer, LL.D. Crown 8vo, cloth limp. 2s. 



A Dictionary of Miracles : Imitative, Realistic, and Dogmatic. By the Rev. E. C. Brewer, 

 LL.D. Crown 8vo, cloth extra.. "]s. 6d. 



Familiar Short Saying's of Great Men. With Historical and Explanatory Notes. By 

 Samuel A. Bent, M.A. Fifth Edition. Demy Svo, cloth extra, 7*. 6d. 



The Slang" Dictionary : Etymological, Historical, and Anecdotal. Crown 8vo, cloth extra, 

 6s. 6d. 



Words, Facts, and Phrases : A Dictionary of Curious, Quaint, and Out-of-the-Way Matters. 

 By Eliezer Edwards. Crown 8vo, cloth extra, js. 6d. 



London: CHATTO & .WIND US, 214, PICCADILLY, W. 



NO BELLADONNA NEEDED. 



OCULIST'S APPARATUS, 



See "ENGINEERING," July i8?/i, 1890. 



CURATIVE 



SPECTACLES 



FOB. UNEASY SIGHTS. 



MR. A. FOURNET Gfe) 



18, Bentinck-St., Welbeck-St.,W, 



(HOURS 11 TILL 7.) 

 CONSULTATION FEE, 5s 



Spectacles, s ' eel f r zr s - 7 /6. 



Morning- Post. — " ' Is bad sight - fit 

 on the increase?' is answered by / Iff// 

 A. Fournet with much common ///!//// 

 sense." i /';'///iY\\\ 



Homoeopathic Review. — ' 1 If you •//•/ 

 need to see better, yet shrink from //flu 

 glasses, read A. I-ournet's Philoso- ' 'l' ll 

 phy of Sight." 



(15 Stamps, from the Author.) 



Fournet's Refractometer. 



Shown before Royal Institution. 



THE GOLDEN LIBRARY 



Post 8vo., cloth limp, 2s. per Volume. 



Bayard Taylor's Diversions of the Echo Club 

 Bennett's Ballad History of England. 

 Bennett's Songs for Sailors. 

 Godwin's Lives of the Neeromaneers. 

 Pope's Poetical Works. 

 Holmes's Autocrat of the Breakfast-Table. 

 Holmes's Professor at the Breakfast-Table. 

 Jesse's Scenes of Country Life. 

 Leigh Hunt's Tale for a Chimney Corner. 

 Mallory's Mort d'Arthur : Selections. 

 Pascal's Provincial Letters. 

 Rochefoucauld's Maxims and Reflections. 



LONDON: CHATTO & WINDUS, 214, Piccadilly, W. 



TWO MAGAZINES. 



THE IDLER. Edited by Jerome K. Jerome and Robert E. Barr. 



Profusely Illustrated. Sixpence Monthly; or 8j. per year, post free. 



THE GENTLEMAN'S MAGAZINE. One Shilling Monthly, or 



14*. per year, post free. In addition to Articles upon Subjects in Literature, Science, and Art, " TABLE TALK " by Sylvanls 

 Urban, and " PAGES ON PLAYS " by Justin H. McCarthy, appear Monthly. 



London: CHATTO & WINDUS, 214, PICCADI LLY, W. 



"CADBURY'S COCOA 



ABSOLUTELY PURE, therefore BEST. 



PRECAUTION. — Be careful to avoid highly-coloured Foreign preparations, sold as pure, which are 

 adulterated with alkali. This may be detected by the dark colour, and the scent when a tin is first opened. 



