cecil 
ROYAL AGRICULTURAL SOCIETY OF 
ENGLAND. 
_ The Appointment of SENIOR ASSISTANT in the Chemical Laboratory 
is now vacant, Salary £150 per Annum. A thorough knowledge of 
Theoretical and Practical Chemistry is requisite. There is also a vacancy 
fora JUNIOR ASSISTANT, Salary commencing at £70 per Annum. 
Applications (inclosing Testimonials) for either of the above to be made by 
letter only to Dr. J. AuGustus VoELCKER, 12, Hanover Square, W. 
INTERNATIONAL EXHIBITION 
OF 
INDUSTRY, SCIENCE, AND ART. 
EDINBURGH—MAY TO OCTOBER 1886. 
Patron—HER MAJESTY THE QUEEN. 
President—The Marguis of Lornutan, K.T. 
The EArt OF ABERDEEN. 
The Kart or ROSEBERRY. 
The Lord Provost oF EDINBURGH. 
The Lorp Provost or GLasGow. 
Vice-Presidents. | 
The EXHIBITION will be OPEN to the 
PRODUCTS, MANUFACTURES, &c., of all COUNTRIES. 
All APPLICATIONS for SPACE must be lodged with the S ry, 
James Marcupank, S.S.C., 29, Hanover Street, Edinburgh, BEFORE 
JANUARY 1,-188€.—Manager, H. A. Heptey. 
CLASS XI. comprises all kinds of SCIENTIFIC APPLIANCES 
and INV TIONS for DOMESTIC or other purposes. CLOCKS, 
WATCHES, &c., in PROGRESS of MANUFACTURE, &c., &c. 
EVENING LECTURES TO WORKING MEN. 
NORMAL SCHOOL OF SCIENCE AND 
ROYAL SCHOOL OF MINES. 
The First Course, consisting of Six Lectures on ‘‘Common Plants, and 
How They Grow,” by Dr. D. H. SCOTT, M.A,, will be delivered at the 
Museum of Practical Geology in Jermyn Street, S.W., commencing at 8 
o'clock on MONDAY. NOVEMBER og, 1885. 
Tickets may be obtained by Working Men only, on application at the 
Museum on Monday Evening, November 2, from 6 to 10 o'clock p.m. Fee 
for the Course, 6%. Each applicant is requested to bring his name, address, 
and cccupation written on a piece of paper, for which the ‘Ticket will be 
exchanged. 
ONSLOW COLLEGE, 
183, KING'S ROAD, S.W. 
NOW COMMENCING.—Day and Evening Classes in Geology, 
Physics, Chemistry, Physiology, Electric Engineering, and other subjects, 
LARGE CHEMICAL and METALLURGICAL LABORATORIES. 
Fees 5s. to 12s. the Session of 7 months for Evening Work. Apply for 
Prospectus to the PRINCIPAL. 
TO BE SOLD.—A CLARKE’S WINDOW 
TRANSIT INSTRUMENT, but little used.—Apply Box 20, Post 
Office Halifax. 
NATURE 
[ Oct. 29, 1885, 
LIVING SPECIMENS FOR THE MIGROSCOPE 
GOLD MEDALawarded at the FISHERIES EXHIBITION to 
THOMAS BOLTON, 57, NEWHALL STREET, BIRMINGHAM, 
Who has last week sent to his subscribers Reotlets of Grass coyered with 
a great variety of Pond Life, including Acineta grandis, Dendrosoma radians, 
Vorticella campanula, Carchesium folypinum, Carchesium spectabile, 
Ofercularia natans, Ophrydium sessile, Thuricola valvata, Cothurnia— 
imberbis, Pyxicola affinis; also Stephanoceros Eichornii,,Limnias cerato- 
phylli, G2cistes crystallinus, Floscularia cornuta, and Floscularia campanu- 
Jata. He has also sent cut Hydra, Amaeba, Vorticella, Crayfish, and other 
Specimens for (Huxley and Martin’s) Biological) Laboratory work. 
Weekly Announcements wil] be made in this place of Organisms T. B. is 
supplying. 
Specimen Tube, One Shilling, post free. 
Twenty-six Tubesin course of Six Months for Subscription of £1 1s 
or Twelve Tubes for 10S. 6a. 
Portfolio of Drawings, Eleven Parts, 1s. each. 
MICROSCOPIC OBJECTS 
PREPARED FOR MOUNTING, WITH INSTRUCTIONS, 
The following Series have recently been prepared and are now on Sale :— 
M* 12 dissections of the house Cricket ... ie ean 
N*® r2 ) ty C; ckroach oe Bop 2 
O* 32 5 mA Hive Bee a sus) ease 
38 other Series have been issued all at 2s. each. 
List oN APPLICATION. 
EDWARD WARD, 249, Oxford Street, Manchester. 
ICROSCOPIC OBJECTS FOR HIRE, 
Histological, Botanical, Geological, by the best Mounters. Let 
4 out on most moderate terms. Particulars of B. WreLts. Dalmain 
Road, Forest Hill. [302 
MINERALOGY AND GEOLOGY. 
PROFESSORS, COLLECTORS and VISITORS to LONDON are 
INVITED to INSPECT Mr. HENSON’S STOCK of CHOICE MINE- 
RALS, &c., &c. At the PRESENT TIME he has a PARTICULARLY 
FINE CRYSTALLISED NUGGET of NATIVE GOLD, WEIGHT 9 oz., 
PINK APOPHYLLITE, CHESSYLITE, EMERALDS on MATRIX, 
PYROMORPHITE (very RARE FORM), CERUSSITE, CRYSTALL. 
ISED MALACHITE, and BOTRYOIDAL CHALCEDONY, ME- 
TEORIC IRONS and STONES. POLISHED AGATES and LABRA- 
DORITES. 
A Large Series of ROCKS, also MICROSCOPIC SECTIONS of the 
same. 
Listson Application. Hammers, Chisels, and HammerStraps. 
PRIVATE LESSONS AND EVENING CLASSES. 
BLOWPIPE CASES AND APPARATUS. Catalogues free. 
SAMUEL HENSON, 
277, STRAND, LONDON. 
Opposite Norfolk Street. 
HERMANN HOFFERT, D.Sc. (Medalist, 
Londen), A.R.S.M., prepares Pupils for the Army, Cooper's Hill, Civil 
Service, B.Sc., &c. Cheerful country residence, good Laboratories. 
Terms moderate.—Apply, Science Schools, South Kensington. 
CHEMICAL APPARATUS, Wholesale, 
Retail, for Colleges, Schools, and Chemical Works. New Catalogue of 
go pages and 500 clear Illustrations, post free, 2@¢.—WILLIAM 
HUME, 1, Lothian Street, Edinburgh. 
BOOKS (Secondhand), Miscellaneous, Re- 
mainders, &c.—C. HERBERT, English and Foreign Bookseller, 319. 
Goswell Road, London, E.C. Catalogue free onreceipt of two stamps, 
Libraries, Old Books,and Parchment purchased. 
MATHEMATICS (London and Suburbs).— | 
Students attended (at their own homes if they so prefer) by a High 
Wrangler, ‘frin. Coll., M.A. and F.R.S., on very reasonable terms.— 
X., 9, Dorville Road, Hammersmith, W. 
HALF-PRICE will be given for ‘‘ Nature” 
a week old.—Apply to J. B., Parsonstown, Ireland. 
FERNERIES fitted up with Preserved 
Flowers. Foliage Plants, and Floral ecorations suitable for Drawing- 
and Ball Rooms, Churches, Chapels. Theatres, &c. 
Sundella, a PATENT Preparation for preserving FERNS (from 
Maiden-hair to the common Brake), GRASSES, FOLIAGE, &c., sent, 
securely packed in stout box (with full particulars) on receiyt of P.O.O. 
for Ss, 
MADAME SUNDELL, 
4, SPUR STREET, LEICESTER SQUARE, LONDON. 
i) 
ed 
SIX PRIZE MEDALS 
AWARDED FOR GEOLOGICAL COLLECTIONS 
Geological Collections especially adapted for Teaching as supplied to Science 
and Art Department, and used by all Lecturers and Teachers in 
Great Britain, &c. , 
New and Rare Minerals constantly arriving from all parts for selection of 
Single Specimens. 
ROCK SECTIONS AND ROCK SPECIMENS; 
The Largest Variety in England. 
New Catalogues and Lists onapplication to— 
JAMES R. GREGORY, 
88, CHARLOTTE STREET, FITZROY SQUARE, LONDON. 
Established 27 Years in London. 
CABINETS FOR MINERALS, 
FOSSILS, &e. 
6 DRAWERS, 20 INCHES HIGH Pere re tee 'S. 
10 ” 39 ” ” seat pase | ene 45s. 
8 ” 26 ” ” Perc res ets) 
12 ” 39 ” ” ate 525) 
NATURALISTS’ GLASS-CAPPED BOXES, ROUND AND 
RECTANGULAR, FROM ONE SHILLING PER DOZEN. 
THOMAS D. RUSSELL, 
78, NEWGATE STREET, E.C. 
be dasha 
3145 
