norm 
» Secretary, 
lxxxii 
NATURE 
[ Fuly 16, 1885 
THE MASON SCIENCE COLLEGE, 
BIRMINGHAM. 
APPOINTMENT OF DEMONSTRATOR IN PHYSIOLOGICAL 
DEPARTMENT. 
The Council invite Applications on or before AUGUST 26, 1885, for the 
above Appointment, the duties of which will commence on OCTOBER 1. 
Particulars of the Stipend and Conditions will be sent on application to. the 
Mr. G. H. Morey, the Mason Science College, Birmingham, 
to whom all applications for the Appointment should be sent. 
J. THACKRAY BUNCE, President of the Council. 
UNIVERSITY COLLEGE OF SOUTH 
WALES AND MONMOUTHSHIRE. 
‘An «ASSISTANT LECTURER in MATHEMATICS will be AP- 
POINTED in SEPTEMBER (Stipend, £100 per annum). Candidates 
must send in applications, with testimonials and references, not later than 
AUGUST 27. 
For further information apply to 
Cardiff, June r2, 1885 
A B.A. of TRIN. COLL., CAMBRIDGE, 
desires employment. Hcnours (2nd Class) in Natural Science, 1882. 
Subjects: Physiology, Comp. Anat., and Chemistry. Apply, E. W. W., 
13, Gargrave Road, Skipton in Craven. 
B.A. OF OXFORD (2nd Class Honours in 
Biology, 1882) desires Work in a Laboratory, Library, or Museum, or 
will undertake Translations of Scientific Literature from French, Ger- 
man, Dutch, Danish, and Swedish. Good references.—Address R. R. 
4, Northfield Square, Leeds. 
C. D. AHRENS, 
PRISM WORKER AND PRACTICAL OPTICIAN, 
36, GREAT RUSSELL STREET, LONDON, W.C. 
IVOR JAMES, Registrar. 
2 
SPECIAL NOTICE—Sce the New Polarising Prism, 
Can be used over any A & B Eyepiece. Strongly recommended for Lantern 
Work; will take in any Object. Also see the New Erecting Microscope. 
Any Object-Glass and any Eyepiece can be used withit. It is the only way 
of seeing the Objects in theirright shape and form. Maker of the Largest 
Nicol Prisms in existence for the Late W. Spottiswoode, Esq., P.R.S., &c., 
&c., and for Frank Crisp, Esq., LL.B.. B.A., &c., &e. 
TRADE SUPPLIED WITH PRISMS. 
SCIENCE AND ART DEPARTMENT 
so PER CENT. GRANT FOR THE PURCHASE OF STANDARD 
COLLECTIONS AND APPARATUS FOR TEACHING GEOLOGY 
AND MINERALOGY. NEW LISTS and FORMS on which the 
Application is to be made supplied by 
THOMAS J. DOWNING, 
Geologist, &c., 
8, WHISKIN STREET, LONDON, E.C. (over Quarterofa Century). 
PATERSON & COOPER. 
76, LITTLE BRITAIN, LONDON, E.C. 
Electric Light and Power and Telephone Engineers. 
New Electric Light Catalogue, post free 1s. 
PATERSON & COOPER teg to give notice that they have disposed of 
the Philosophical, Educational, and Experimental Part of their Business to 
Messrs. J. and T. MAYFIELD, 41, Queen Victoria Street, E.C. 
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, &e. 
New and Rare Minerals constantly arriving from all parts for selection of 
Single Spec 
ROCK SECTIONS AND ROCK SPECIMENS: 
The Largest Variety in England. 
New Catalogues and Lists onapplication to= 
JAMES R. GREGORY, 
£8, CHARLOTTE STREET, FITZROY SQUARE, LUNDON. 
Established 27 Years in London. 
LIVING SPECIMENS FOR THE MICROSCOPE. 
GOLD MEDALawarded at the FISHERIES EXHIBITION to 
THOMAS BOLTON, s7, NEWHALL STREET, BIRMINGHAM, 
who has last week sent to his subscribers free-swimming Epistylis (with 
sketch), which is probably a new species. He has also sent out the rare 
Entomostraca, Moina rectirostris, and Macrothrix roseus, Leptodora hyalina, 
Hyalo-daphnia Kahlbergensis, Sida crystallina, Cristatella mucedo, Cordylo- 
phora lacustris, Spongilla fluviatilis, Melicerta ringens, Brachionus urceo, 
laris, Dero obtusa, Volvox globator; also Hydra, Vorticella, Amoeba 
Crayfish, and other Specimens for (Huxley and Martin’s) Biological Labora- 
tory work. 
Weekly Announcements will be made in this place of Organisms I. B. is 
supplying. 
Specimen Tube, One Shilling, post free. 
Twenty-stx Tubesin course of Six Months for Subscription of £1 15., 
or Twelve Tubes for 10s. 6d. 
Portfolio of Drawings, Ten Parts, 1s. each. 
EDWARD WARD has pleasure in an- 
nouncing the issue of a new Micro-Slide of Zoophyte, with tentacles 
out, in the special manner so well known to his numerous patrons. 
Esoece 
Plumularia similis ... .. .. (post-free) 2 8 
Also, quite new :— - 
Gorgonia verrucosa (polype stained) ,, 252 
Podalirus typicus (Spectre Shrimp) “9 I 2 
EDWARD WARD, 249, OXFORD STREET, MANCHESTER. [503 
CABINETS FOR MINERALS, 
FOSSILS, &c. 
6 DRAWERS, 20 INCHES HIGH saa) WBS 
10 2 39 ” 23 ss 45S. 
8 2: 26 » oe 28s. 
12 ” 39 ” 29 oo) Seas 
— NATURALISTS’ GLASS-CAPPED BOXES, ROUND AND 
RECTANGULAR, FROM+ ONE SHILLING PER DOZEN. 
THOMAS D. RUSSELL, 
78, NEWGATE STREET, E.C. 
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. 
Lists on Application. Hammers, Chisels, and Hammer Straps. 
PRIVATE LESSONS AND EVENING CLASSES. 
BLOWPIPE CASES AND APPARATUS. Catalogues free. 
SAMUEL HENSON, 
277, STRAND, LONDON. 
Opposite Norfolk Street. 
MINERALS AND FOSSILS. 
SINGLE SPECIMENS OR COLLECTIONS. 
xe. HH. BUTLER, 
Assoc. R. Sch. Mines Lond., 
M.A. Oxon. and L.S.A. Lond. 
Successor to the late R. TALLING. 
180, BROMPTON ROAD 
LONDON, S.W. 
Five minutes’ walk from the Natural History Museum, S. Kensington. 
The AUTOCOPYIST (from 2os.) furnishes excellent 
BLACK COPIES 
in Lithographic Style, of the ORDINARY WRITING (also Shorthand, 
Arabic, &c.), Sketches, Music. Easy, Economical.—] he AUTOCOPYIST 
, London Wall, London. 
BOOKS (Secondhand), Miscellaneous, Re- 
mainders, &« —C. HERBERT, English and Foreign Bookseller, 51¢. 
Goswell Road, London, E.C. Catalogue free on receipt of two stamps. 
Liktraries, Old Books, and Parchment purchased. 
