CVl 



NATURE 



{July 31, 1879 



MICROSCOPIC OBJECTS 



Of superlative perfection, illustrating Histology and every branch of Micro- 

 scopy. Catalogue post free and gratis on application. 



PARIS UNIVERSAL EXHIBITION, 1878. 



Prize Medal awarded for Excellence^ Variety^ &^c, 

 EDMUND WHEELER, 48N,TollinEton Road, HoUoway. London, N. 



SIR JOSIAH MASON'S SCIENCE 

 COLLEGE, BIRMINGHAM. 



It is intended to OPEN this College in the month cf OCTOBER, 1880. 



The full staff of Professors will Include those necessary to enable Students 

 to pass the Examinations of the University of London for the degrees of 

 B.ScandD.Sc. 



The Professors of Mathematics, Physics, Chemistry, and Biology (includ- 

 ing Botany and Zoology), will be the first appointed. 



The appointments will be made fcr a term of three years, renewable at 

 the pleasure of the trustees. The stipend in each case will be £,'^$0 per 

 annum, with half the class fees. 



Applications from Candidates must be forwarded not later than the 31st 

 of December next to the Honorary Secretary to the Trustee?, Mr. G.J. 

 Johnson, 36, Waterloo Street, Birmingham, from whom any further infor- 

 mation may be obtained. 



By a resolution of the Trustees, Candidates are specially requested to 

 abstain from canvassing. 



ST. THOMAS'S HOSPITAL, ALBERT 

 EMBANKMENT, S.E. 



The WINTER SESSION, 1879-80. will commence on OCTOBER 1st. 



TWO ENTRANCE SCIENCE SCHOLARSHIPS of £>6o and £^0, 

 OPEN to all First Year's Students, without the condition of their having 

 first entered as Students of the Hospital, will be awarded in the first week of 

 October. Subjects : Chemistry and Physics, with either Botany cr Zoology, 

 at option. SPECIAL CLASSES for the PRELIMINARY SCIENTIFIC 

 -of University of London, with Practical Work in Laboratories and Museums, 

 are to be held from October to July, and for the ist M.B. from January to 

 July. 



Several Medical Practitioners In the neighbourhood receive Students for 

 residence and supervision, and a register of inspected and approved lodgings 

 is kept in the Secretaiy's ofiice. 



Prospectus and all particulars may be obtained from the Secretary, Dr. 

 ■Gillespie, at the Hospital. 



W. M. ORD, M.D., Dean. 



UNIVERSITY COLLEGE OF WALES. 



A PROFESSOR of NATURAL SCIENCE is required. Commencing 

 Salary, £2^,0 per Session, with rooms in College. 



Applications to be addressed, on or before August 7, to the Hon. Secs., 

 7, Queen Victoria Street, London, E.C. 



FOR 



'•HALL, MARK" 

 THERMOMETERS. 



The Kew Committee of the Royal Society hereby give Notice that after 

 *hi5 date all Thermometers verified at the Kew Observatory will be marked, 

 free of expense, with their monogram, *' K.O.," interlaced, and a register 

 nunlber, in addition to the maker's number. 

 The Table of Errors will be furnished as usual. 

 By order, 



G. M. WHIPPLE, Superintendent. 

 Kew Observatory, December 13, 1878. 

 Scale of Charges for Verification, &c., pest free on application. 



DUNHEVED COLLEGE (LIMITED), 



LAUNCESTON, CORNWALL. 

 Seven hours from London. Separate Bedrooms. Systematic Teaching 

 in Science, Foreign Languages, and University Courses. 

 Calendar post free from 



The PRiNciPAt— benjamin RALPH, LL.B. Dub. 



FOR SALE.— INDIAN ELEPHANT 



SKELETONS, two monsters, nearly twelve feet high, one macerated 

 the other not ; one has tusks valued at Rs- 400 ; to be sold, a bargain. 

 Can be seen at 6, Somerset Villas, Lordship Road, Stoke Newington, 

 London. 



Several Skins of Elliott's Pheasant on hand. 



DIAMONDS IN MATRIX. 



R. C. NOCKOLD, Diamond and Oriental Stone Cutter and Dealer, has 

 for sale specimens of the above ; also Cut Precious Stones in all Colours. 



12, FRITH STREET, SOHO, W. 



THIN GLASS FOR MICROSCOPIC 



MOUNTING, of best quaKty. Cu-cles, 3J. €>d, per ounce ; Squares, 

 2f. gd, ; post free fzd. extra ; Ground edged Slips, 5J. per gross ; also 

 ot'ier Mounting Materials and Objects prepared for mounting.— CH AS. 

 PETIT, 151, High Street. Stoke Newington, N. 



LIVING SPECIMENS FOR THE MICROSCOPE. 



THOMAS BOLTON. MICROSCOPIST'S and NATURALIST'S 

 STUDIO. i7» ANN STREET. BIRMINGHAM. 



T. B. has last week posted to his subscribers specimens of Cristatelia 

 vtticedo, Plnntatella'Tepens, or V'clvox glcbator. He has als> sent out 

 Alcyonella /intgosa^ Fredericeila suliana, ConochHiis voIvojc^ Zooihani~ 

 nium arhuscula, &c. 



Weekly announcements will be made in this place of organisms T. 6. 

 is supplying. 



Specimen Tube, One Shilling, post-free, 



Tiveitty-six Tabes in course tf Six Months for Subsc7-iption of £1 i** 



Price List of Specimens on application, with stamped addressed envelope. 



Portfolio of Drawings, One Shilling. 



LIBRARY OF HARVARD UNIVERSITY, 

 CAMBRIDGE, MASS., U.S.A. 



FficVages for the General Library, or for any of the Departmental 

 Libraries (Astronomical Observatory, Botanic Garden, Bussey InstitutioDi 

 Divi»ity School, Law School, Museum of Comparative Zoology, Scientific 

 School), may be seat to the Agents, Messrs. TrCbner & Co., 57 and sg. 

 Ludgate Hill, London. 



JUSTIN WINSOR, Librarian. 



LABORATORY, 38, GRACECHURCH STREET, LONDON, E.G. 



A. ANTHONY NESBIT, F.C.S., 



WATER ANALYST, 



Performs every description of Water Analysis on moderate terms. 



Preperly cleansed bottles for the reception of samples sent to any part c# 



the Kingdom. 



ELECTRICAL, SCIENTIFIC, & PHOTO- 



GRAPHIC APPARATUS.— Electric Bells, Fire ard Thief Alarms, 

 and Automatic Switches. Induction Coils, Frictional Machines, Lamps, 

 and Batteries. Microphones, Wires, Magnets, Carbons, and all Mate- 

 rials. Repairs and Alterations. New Illustrated Descriptive Catalogue> 

 ene Stamp. Cameras, Dry PJates, S^^nsitive Paper, and all Chemicals. 

 Photo. List free.— DALE & CRAMPTON, Manufacturing Opticians, 

 4, Little Britain, London, E.C. 



DIAMONDS AND OTHER PRECIOUS 



STONES. Scientific opinion pvenas to GENUINENESS, PURITY 

 and VALUE.— Bkyce Wkight, 90, Great Russell Street, London. 



ROYAL POLYTECHNIC— CLASSES for 



the preparation of Students fcr University Examinations, under the 

 direction of EDWARD B. AVELING, D.Sc, F.L.S. London Uni- 

 versity Matriculation, ist and 2nd B.Sc, Preliminary Scientific .M.B.,, 

 Botamy, Physi«Iogy, Chemistry. All the work practical. 



MINERALOGY AND GEOLOGYT 



A New List of Collections of Fossils, Minerals, and Rocks now ready, 

 including Special Collections to illustrate the various Text-books, in 

 Cabinets. List of Sections of Rocks for the Microscope. Blowpipe Appa- 

 ratus and Materials of all kinds in Cases or separately. New Patterns of 

 Geological Hammers, with prices. List of N«w and Second-hand Books of 



JAMES R. GREGORY, 



MUSEUM OF GEOLOGY. 



88, CHARLOTTE STREET, FITZROY SQUARE. 



CASTLETON, DERBYSHIRE. 



JOHN TYM 



Has largely added to his stock of Fossils and Minerals, and is now oirerr.: 

 greatly improved Educational Collections at very Low Prices. 



For full particulars see his Catalogue, sent post free on application. 



Postal Addkess — 



CASTLETON vi& SHEFFIELD. 



MINERALS, ROCKS, AND FOSSILS." 



COLLECTIONS IN CABINETS. 



Two Hundred Specimens, 40J. ; 150 do., 30J. ; 100 do., 20J. ; 50 do., xos,\ 

 Size of Specimens, 2 square inches. Naming and Localities guaranteed. 



Superior Cabinets fitted with Card-Trays and Catalogue included. 



" 1 he Popular Scientific Pocket Cabinet Series " comprises 9 Cabinets andl 

 2Z4 Specimens. 2j. 6d. each Cabinet, free delivers', ^d. (See Natire,^ 

 March 13. No. 489. page 447.) , ,. J 



The Collector's Field Apparatus complete, 21J. Hammer-holder an(| 

 Waist-strap, price 2S. Collecting-bag (figured and described), price 4J. 



THOMAS J. DOWNING, Geologist, &c., 



38, WHSKIIN STREET, LONDON, E.C. 

 Catalogue, Lists, and " Quarterly Circular " free on receipt of id. postage.] 



