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HENRY CROUCH'S NEW STUDENT'S BINOCULAR MICROSCOPE.
Has Concentric Rotating Stage l-in. thick.
can be swung above the stage. Is now fitted with large stand
Condenser. Best 1-in. 25°. » *-in. 110° in plain
HENRY CROUCH, Barbican Optical Works, 66, Barbican, London, E.C. MICROSCOPICAL SPECIALITIES.
Sixteen Specimens of Soundings collected by the Challenger’ Expedition, 1s. 3d. each, postfree. Direct from the late Sir Wyville Thomson. See following extract:-"I have sent none of the Challenger' Materials to any one but yourself."-Bonsyde, Linlithgow, N.B., June 7th, 1877.
J. T. NORMAN, OPTICIAN, &C., 198, CITY ROAD, LONDON, E.C. Established 1848. Prize Medal and Certificates for Excellence of Manufacture. Micro Troughs, Tanks, Cells, &c., made to any size and Shape.
Largest Selection of Typical Rock Sections in London, all correctly named, Is. 6d. each, post-free.
NOW IN THE PRESS.
AND WHERE TO FIND THEM.
Illustrations. Crown 8vo, cloth extra, 75. 6d.
LONDON : CHATTO AND WINDUS, PICCADILLY, W. THE BEST REMEDY FOR INDIGESTION.
Are confidently recommended as a simple but certain Remedy for Indigestion, which is the cause of nearly all the diseases to which we are subject, being a medicine so uniformly grateful and beneficial, that it is with justice called the “Natural Strengthener of the Human Stomach.” “Norton's Pills ” act as a powerful tonic and gentle aperient; are mild in their operation, safe under any circumstances, and thousands of persons can now bear testimony to the benefits to be derived from their use, as they have been a never-failing Family Friend for upwards of 50 years. Sold in Bottles at is. Ifd., 25. 9d., and 11s. each, in every Town in the Kingdom.
DR. ROOKE'S ORIENTAL PILLS & SOLAR ELIXIR.
THESE WELL-KNOWN FAMILY MEDICINES have had a continually increasing sale throughout the United Kingdom and the British Colonies since their introduction in 1836, and are especially noted for their STRENGTHENING and RESTORATIVE Properties; hence their invariable success in the RELIEF and CURE of INDIGESTION,
PULMONARY CONSUMPTION, LIVER COMPLAINTS,
GOUT, SCROFULA, BRONCHITIS,
GENERAL DEBILITY, AND ALL DISEASES OF THE NERVOUS SYSTEM, Whether arising from a sedentary mode of life, unhealthy occupation, insalubrious climate, or any
The ORIENTAL PILLS AND SOLAR ELIXIR
Are prepared only by CHARLES ROOKE, M.D., SCARBOROUGH. The PILLS are sold in boxes,
at is. I d. and 45. 6d. each; the ELIXIR in Bottles at 45. 6d. and is, each, duty included. Around each Box and Bottle are wrapped Directions for the Guidance of Patients in all Diseases.
DR. ROOKE'S HANDY POCKET-GUIDE TO HEALTH
FULL OF PLEASING ILLUSTRATIONS AND USEFUL INFORMATION, 88 PAGES. This Book may be obtained from any PATENT MEDICINE VENDOR, or POST FREE
from DR. ROOKE, Scarborough, England, on receipt of PENNY POSTAGE STAMP.
CROSBY'S COUGH ELIXIR
Is the leading Medicine of the day, and is specially recommended by several eminent Physicians. It has been used with the most signal success for Asthma, Bronchitis, Consumption, Coughs, Influenza, Consumptive Night Sweats, Spitting of Blood, Shortness of Breath, &c., and is a most valuable adjunct to Dr. ROOKE'S Medicines in all affections of the Throat and Chest.
CROSBY'S BALSAMIC COUGH ELIXIR is sold everywhere, by all Chemists and Patent Medicine Vendors at the following prices :-1s. 13d., 1s. 9d., 4s. 6d., and 11s. each Bottle. A great saving is effected by purchasing the large Bottles. Full Directions with each Bottle.
LONDON : PRINTED BY WILLIAM CLOWES AND SONS, LIMITED, STAMFORD STREET AND CHARING CROSS
See “ English Mechanic," August 22nd, page 561.
Koch's Cholera bacillus, 2s. 6d. post-free.
12, VORLEY ROAD, UPPER HOLLOWAY, LONDON, N.
(TWENTY YEAR'S WITH THE LATE E. WHEELER.)
Geologists' Hammers, &c.
CLOSE TO THE NEW GENERAL POST OFFICE.
MICROSCOPICAL SPECIALITIES, ILLUSTRATING THE GROWTH, REPRODUCTION, AND STRUCTURE OF PLANTS. Pollen of Cyrtanthera from Brazil............ 1/- per Slide. I Vaucheria sessilis, selected fertile filaments stained in Pollen grain of Enothera emitting tube...... 1
1/3 per Slide. Detached Hairs of Lavender, stained........ 1/3
Motile Protococcus pluvialis showing flagella... Selected Spores of Equisetum with expanded
Puccinia violarum, section of pustule with Uredo and elaters... ................................. telento-spores........
... 1/3 Specially prepared illustrations of Sachs' and Thome's Textbooks of Botany, being copies of Figures in those works. All Post-free.]
CHAS. V. SMITH, CARMARTHEN. (Lists on Application. SECOND-HAND MICROSCOPES AND OBJECTIVES. A large assortment by ROSS, BECK, COLLINS, SWIFT, and other first-class Makers, on Sale, very cheap.
MICROSCOPIC OBJECTS in great variety. Spécialité Physiological and Pathological Tissues. 500 SECOND-HAND PHOTOGRAPHIC LENSES AND CAMERAS By ROSS, DALLMEYER, TENCH, VOIGTLÄNDER, and all other esteemed Makers. The Cheapest and Best Stock in London.
New Catalogues gratis on application. Purchases and Exchanges made. Instruments Repaired and Relacquered. SANDS & HUNTER, 20, CRANBOURNE STREET, LONDON.
EGGS OF VAPOURER MOTH.
ORGYIA ANTIQUA. Figured in Science-Gossip.
19. ad. Post-free.
HEAD OF HONEY BEE.
(WORKER). " Without pressure,' in Balsam, for Polariscope.
Is, 2d, Post-free.
Eccs OFF YA POURER MOTH. NEW PREPARATIONS HEAD OF HONEY BEE
HEAD OF HONEY BEE
(Worker). For Paraboloid, 25. 6d.
Post-free. Showing every organ of the mouth, the various shaped hair and spines, all retaining the natural colour and form.
Very convenient and portable, gives ample Illumination, has all necessary adjustments, is provided with a Cylindrical Case, and can be conveniently carried in the breast coat pocket; when charged
with sufficient Oil to burn for above 31 hours, weighs under 12 oz. Price 8s. 6d. Microscopists who are in the habit of exhibiting at the Meetings of their respective Societies and elsewhere,
should provide themselves with this little Lamp. MICRO-PETROLOGY, TYPICAL ROCK SECTIONS, 1/6 AND 21- EACH. JAMES HOW & Co., 73, FARRINGDON STREET, LONDON.
STUDIES IN MICROSCOPICAL SCIENCE.
Edited by ARTHUR C. COLE, F.R.M.S., &c. VOL. III. will be commenced shortly. All correspondence connected with this Volume to be addressed to
J. G. HAMMOND & Co., 136 Edmund Street, Birmingham, from whom Prospectus can be obtained. Now ready, VOL. I., containing 53 Chromo-Lithographed Plates, ku lis. 6d. ; or, accompanied by 52 Prepara
tions, in Cabinet, £4 145. 6d. And VOL. II., containing THE METHODS OF MICROSCOPICAL RESEARCH; SECTION I., ANIMAL HISTOLOGY ;
SECTION II., BOTANICAL HISTOLOGY; and POPULAR MICROSCOPICAL STUDIES ; with 38 CHROMO
LITHOGRAPHED PLATES, &I IIs. 64. ; or, accompanied by 36 Preparations, in Cabinet, £4 45. od. NOTE.—The Sections of either Volume may be had separately.
All correspondence having reference to Vols. I. and II. to be addressed to the Editor ST. DOMINGO HOUSE, 53, Oxford Gardens, Notting Hill, W.
From whom all Particulars may be obtained. : *** A. C, COLE AND SON'S Pathological, Physiological, Botanical, and general
Preparations and Diatoms, may be obtained of all the principal Opticians.
xxxix WATKINS AND DONCASTER, Naturalists and Manufacturers of Entomological Apparatus and Cabinets. N.B.-For Excellence and Superiority of Cabinets and Apparatus, references are permitted to
distinguished Patrons and Colleges, &c. Plain Ring Nets, Wire or Cane, including stick, 1/8, 2/5, 2/3. Breeding Cage, 2/6, 45., 5/-, and 7/6.. Folding Nets, 3/9 and 4/6.
Taxidermist's Companion, i.e. a pocket leather case, containing Umbrella Nets, 7/6 (self-acting).
most useful instruments for skinning, 10/6. Pocket Boxes, -76; corked both sides, /9,1/-, and 1/6. Coleopterist's Collecting Bottle, with tube, 1/6, 1/8 Zinc Relaxing Boxes, -/9, 1/4, 1/6, and 21
Ditto, Tin Boxes, 1/6. Ditto, large size, with strap, 61-.
Ditto, Japanned Pocket Case, fitted with 26 tubes, 5/.. Nested Chip Boxes, 4 dozen, -/8.
(black). Botanical Cases, japanned, double tin, 1/6, 4/4, 5/2,6/-,9/-. Entomological Pins, assorted or mixed, 1/- per oz. (white or Botanical Paper, 1/1, 1/4, 1/9, and 2/2 per quire. (Too heavy Glass Killing Bottles or Tubes ready
for post.) Sugaring Lanterns, 2/6 to rol-,
Insect Cases, imitation mahogany, 3/6 to 11/-. Sugaring Tin, with brush, 1/6, 2/-.
(oz. Cement for replacing Antennze, -76 per bottle. Mite Destroyer (not inflammable nor dangerous to use), 1/- per Forceps for removing Insects, 2/6 per pair. (Supplied to Store Boxes, 2/6, 47-57-, and 6/-. .
Collectors all over the world.) Ditto, Book Pattern, 8/6, 9/6, and 10/6.
Cabinet Cork, 7 X 3t, best quality, 1/3 per dozen sheets. Setting Boards, flat or oval, i-in., -/6; it-in. -/8; it-in., -/9| Pupa Diggers, 1/6, 2/-. 'Insect Lens, 1/6 to 8/-.
3-in., -/10; 3t-in. 1/-; 3-in., 1/2; 3t-in., 1/4; 4-in., 5/6; Glass Top Boxes, per dozen, 1/8, 2/-, 2/6.
4t.in., 1/8; 5-in., 1/10. Complete set of 14 boards, 10/6. Egg Drills, -/3." Setting Houses, 9/6 and 11/6; corked back, 14/6.
Metal Blow-pipes, -/7. Zinc Larva Boxes, 9/6, 1/2
| Setting Needles, 6d. per box. All Articles enumerated are kept in stock, and can be sent immediately on receipt of order. For Sale, a large Assortment of Ova and Pupæ of both British and Foreign Butterflies and Moths.
CABINETS.-Special Show Room. The following are the prices of a few of smaller sizes; for measurements and larger sizes 800 Catalogue (48 pp.) me for Minerals and Dried
Minerals and Dried
Eggs. Plants, Fossils, &c. 4 Drawers .... 14/- .. .. 12/6 ... 10/6
8 Drawers ... 32/- .... 30/- .... 23/6 .. .. 18/• .. .. 16/6 .. .. 15/
.... 48%• .. .. 42/• .. .. 40/A LARGE STOCK OF INSECTS AND BIRDS' EGGS.
Birds, Mammals, &c., Preserved and Mounted by First-class workmen.
36, STRAND, W.C. (FIVE DOORS FROM CHARING CROSS).
MARK TWAIN'S WORKS.
UNIFORM ILLUSTRATED EDITION. THE ADVENTURES OF HUCKLEBERRY | THE ADVENTURES OF TOM SAWYER
FINN. With 174 Illustrations by E. W. KEMBLE. Crowa With 11. Illustrations. Crown 8vo, cloth extra, 75. 6d. 8vo, cloth extra, 75. 6d.
[In the press. THE CHOICE WORKS OF MARK TWAIN. ** Also a Cheap Edition, post 8vo, illustrated boards, 25.
Revised and Corrected throughout by the Author. With Life, THE PRINCE AND THE PAUPER. With Portrait, and numerous Illustrations. Crown 8vo, cloth extra,
157 Illustrations. Crown 8vo, cloth extra, 78. 6d. 75. 6d. THE INNOCENTS ABROAD; or, The New
A TRAMP ABROAD. With 314 Illustrations. Pilgrim's Progress ; being some Account of the Steamship
Crown 8vo, cloth extra, 75. 6d. “ Quaker City's" Pleasure Excursions to Europe and the Holy
*** Also a Cheap Edition, post 8vo, illustrated boards, 25. Land. With 234 Illustrations. Crown 8vo, cloth extra, 7s.6d.
LIFE ON THE MISSISSIPPI, With 311 *** Also a Cheap Edition, post 8vo, illustrated boards, 25.
Original Illustrations. Crown 8vo, cloth extra, 75. 6d.
AN IDLE EXCURSION, and other Sketches. 8vo, cloth extra, 78. 60.
Post 8vo, illustrated boards, 25.
CHARLES DUDLEY WARNER. With 212 Illustrations by T. 8vo, cloth extra, 6s.
** Also a Cheap Edition, post 8vo, illustrated boards, 28. LONDON: CHATTO & WINDUS, Piccadilly.
MICRO-SLIDES FOR SCIENCE CLASSES.
Mr. PIFFARD'S PATENT COUNTER-SUNK SLIPS now on Sale.
Two sizes are ready. 3-16 and 5-8, at 6s. per dozen. Prasiola Crispa, portion of Thallus, beautiful arrangement of Chlorophyl granules, 1s. Teleutospores of Puccinia graminis, 1s. Spores and Elaters of Aneura Pinguis (Jungermanniacea) ls. Stained and Isolated Conidia-bearing Hyphæ, of a Micro-fungus, probably Polyactis cana, ls. Lecanora Tartaren, vert. sect. of Apothecium, showing Asci, ls. Atrichum Undulatum, vert. sect., Male Perichatum and Antheridia, ls. Fasciated Stems of Strawberry, Sweet Pea, Tropæolum and Thistle, ls, each.
REMITTANCE WITH ORDER. ENLARGED CATALOGUE READY, POST FREE. B. PIFFARD, Hill House, Hemel Hempstead, Herts.
Possessing all the Properties of the finest Arrowroot,
BROWN AND POLSON'S CORN FLOUR
Is a Household Requisite of Constant Utility FOR THE NURSERY, THE FAMILY TABLE, AND THE SICK ROOM. NOTE.—Unlike many others, this Corn Flour bears the Name of its Manufacturers, who offer the
guarantee of their long-established reputation for its uniformly Superior Quality.