Page images
PDF
EPUB

Harker, 414; Vesuvius in 1889, Prof. Palmieri, 18; Geo Wharton (Captain W. J. L., F.R.S.): Notes on a Recent Vol.
logical Excursion to the Active and Extinct Volcanoes of canic Island in the Pacific, 276 ; Self-Colonization of Coco-
Southern Italy, 133 ; Activity of Queccia de Salsa, 181; the nut Palm, 585
Catastrophe of Kantzorik, Armenia, F. M. Corpi, 190, the Wheat, Field

Experiments on, in Italy, Prof. Giglioli, 404
Mount Bandai (Japan) Eruption, 348; the Period of the Long Whipple (G. M.), Photography in Relation to Meteorological
Sea-Waves of Krakatao, James C. McConnell, 392 ; the

Work, 503
Eruption of Popocatepetl, 592

Whitaker (W.), a Deep Channel of Drift in the Valley of the
Vulpeculæ, R, Variability of, 257

Cam, Essex, 527
Bestnik Estestvoznaniya, New Russian Natural Science Re- White (Robert B.), Shining Night-Clouds, 369
view, 469

White William), British Earthquakes, 202
Whitechapel, Proposed Free Library at, 161

Whitham Jay M.), Steam-Engine Design, 29.
Wada (J.): Earthquake of July 28, 1889, at Kiushiu, 23; Will (Dr.), Analysis of Carcote, Chili, Meteorite, 428

Cyclone of September 11-12, 1889, in Japan, 208; Meteoro- Willem (Victor), the Gizzard in Scolopendridæ, 237
logy in Japan, 1887, 400

Williams (F. N.): Enumeratio Specierum Varietatumque
Wagner (Dr.): Behaviour of Water in Soil, 383; Fire-damp Generis Dianthus, 51; Notes on the Pinks of Western

Explosions in Mines in Relationship to Cosmic and Meteoro Europe, 78
logical Conditions, 504

Williams (R. P.) and B. P. Lascelles, Introduction to Chemical
Walford (E. A.), Terraced Hill Slopes of the Midlands, 325 Science, 128
Walker (Alfred 0.), Foreign Substances attached to Crabs, Williamson (Prof. W. C., F.R.S.): Organization of Fossil
296

Plants of Coal-Measures, 573
Walker (General J. T., R.E., F.R.S.), Unit of Length of Sir Willoughby (Captain Sir John C.), Africa and its Big Game,
G. Shuckburgh's Standard Scale, 381

298
Wallace (Dr. Alfred R.): Protective Coloration of Eggs, 53 ; Wilson (Sir Daniel), on the Recent Toronto Meeting of the
Degree of D.C.L. Conferred on, at Oxford, 84 ; for Degree of American Association for the Advancement of Science, 17
D.C.L., Prof. J: Bryce's Speech on Presentation of, 112; Wilson (J. Spottiswoode), Geological Mechanism, 390
some Notes on his “Darwinism,” T. D. A. Cockerell, 393 Wilson (R. W.), Magnetism in Brick Buildings, 405
Wallace (Prof.), Sheep Farming in Australia, 113

Wilson William), Practical Observations on Agricultural Grasses
Waller (Dr. Aug.), Electrical Negative Variation of Heart ac and other Pasture Plants, 196
companying Pulse, 288

Wilson (Woodrow), the State, Elements of Historical and Prac-
Walls, Training, in Mersey Estuary, Effects of, L. F. V. Har tical Politics, 196
court, 380

Wilson-Barker (Captain David), Foreign Substances attached
Walsingham (Lord), Presidential Address to the Entomological to Crabs, 297
Society, 334

Wimshurst Machine and Hertz's Vibrator, T. A. Garrett and
Wapiti Acclimatized in Russia, 546

W. Lucas, 515
Warburton (Major P. E.), Death and Obituary Notice of, 164 Wind, Preponderance of North-East Wind during past Five
Ward (Prof. H. Marshall, F.R.S.): Tubercles on Roots of Years, C. L. Prince, 470
Leguminous Plants, 140; Diseases of Plants, 436

Wind at Summit of Eiffel Tower, Mean Hourly Velocity of,
Warren (Rev, Isaac), Table and Formula Book, 558

A. Angot, 67
Watanabe (M.), Redetermination of Longitude in Tokio, 427 Wind-velocity at top of Eiffel Tower, Angot, 48
Water, Compressibility of, Prof. Tait, 361

Winds, Dependence of Force of, upon Surface over which they
Water, Effect of Oil on Disturbed, Richard Beynon, 205

blow, Dr. Van Bebber, 372
Water, a General Formula for the Uniform Flow of, in Rivers Winds, a Popular Treatise on the, William Ferrel, 124
and other Channels, E. Ganguillet and W. R. Kutter, 411 Winds, Relative Prevalence of North-East and South-West,
Water

, Physical Properties of, Prof. P. G. Tait, 416 ; Prof. William Ellis, 586
Arthur W. Rücker, F.R.S., 416

Winlock (Prof.), Progress of Astronomy in 1886, 374
Waterhouse (F. H.), Index Generum Avium, R. Bowdler Winnecke's Periodical Comet, the Orbit of, M. H. Faye, 94
Sharpe, 169

Wolves and Bears in Bosnia, 325
Waterhouse (Colonel J.), Photography of Red End of Spectrum, Wolves, &c., in Germany, Dr. Lampert

, 182
67

Wood (Rev. J. G.), the Brook and its Banks, 53; the Zoo, 53
Waterhouse and Thuiller's Conversion Tables for Metric System, Woodall (Herbert J.), How not to Teach Geometry, 60
65

Woodford (C. M.): Further Explorations of Solomon Islands,
Waterspout in Atlantic, 470

403 ; a Naturalist among the Head-hunters, 582
Watt (James), Proposed Memorial to, 160

Woodthorpe (Colonel), the Aka Expedition of 1883, 86
Waves
, the Production of, Prof. von Helmholtz on, 95

Woodward (A. S.), some British Jurassic Fish-remains, 310
Wayside Sketches, F. Edward Hulme, 270

World, Library Reference Atlas of the, John Bartholomew, 413
Weasel, the Cape, E. B. Titchener, 394

Worthington (Prof. A. M.), Bourdon's Pressure-Gauge, 296, 517
Weather Forecasting, 278

Wright (M. R.), Elementary Physics, 78
Weather, Influenza and, Mitchell and Buchan, 595

Wrightson (Prof. John): Sources of Nitrogen in Soils, 286;
Weather in January, Chas. Harding, 425

How to know Grasses by their Leaves, by A. N. M'Alpine,
Weather and Tidal Forecasts for 1899, Ď. Dewar's, 546

557
Weeds, European, in America, 18

Wynne (W. P.), Constitution of Tri-derivatives of Naphthalene,
Weigert's (Dr.),' Treatment of Pulmonary Phthisis, Prof. 454

Visconti, 380
Weismann's (Prof.) Essays, Dr. St. George Mivart, F.R.S., 38
Veismann versus Lamarck, Prof. E. D. Cope, 79

Yatchevsky (M.), Limits of Ever-frozen Soil in Siberia, 472
Weismann (Prof. A.): Theory of Heredity, 317, 373, 439; and Yeast, Fermentation with Pure, Prof. Percy F. Frankland, 339
the Theory of Panmixia, 437

Young (Arthur), Travels in France, 294
Weiss (F. Ernest), Foreign Substances Attached to Crabs, Young (Prof. C. A.), the Elements of Astronomy, 485
272

Young (Dr. Sydney), Exact Thermometry, 152, 271, 488
Weldon (W. F. R.), Abnormal Shoots of Ivy, 464

Yule (Sir Henry), Death of, 207
Wesley (W. H.), the Corona of 1889 December 22, 450
West Indies, African Monkeys in the, Dr. P. L. Sclater,

Zeiss's New Apochromatic Microscope Objective, 494
Westphalia, Stalactite Cave discovered in, 113

Zelbr (Dr.), Comet Swift (f 1889, November 17), 115, 233
Wethered (E.), Occurrence of Girvanella Genus, and on Oolitic Zepharovich (Ritter von), Death and Obituary Notice of, 448
Structure, 238

Zodiacal Light, Maxwell Hall on the Spectrum of the, 351, 402
Wetterhan (D.): Galls, 131; a Formula in the Theory of Least Zodiacal Light, J. Norman Lockyer, F.R.S., on, 402

Zoo, the, Rev. J. G. Wood, 53
Weyl (Dr., Biology of Anaërobic Bacteria, 359

Zoogeography: Wolves, &c., in Germany, Dr. Lampert, 182
Whales, Time they can remain under Water, 66

Zoological Discoveries, N. M. Przewalsky's, 468

F.R.S, 368

Squares, 394

Zoological Floating Station at Isefiord, Denmark, 569

Rat in Cornwall, Thos. Cornish, 161; Snake and Fish, Herr
Zoological Gardens, Additions to, 44, 68, 87, 114, 138, 163, Fischer-Sigwart, 162 ; Arrangement of Excitable Fibres of

210, 232, 256, 284, 304, 326, 349, 402, 449, 472, 496, 521, Internal Capsules of Bonnet Monkey, Beevor and Horsley,
548, 571, 595

166; Heloderma suspectum, the Poisonous Lizard of South-
Zoological Society, 94, 143, 335, 382, 406, 478, 550, 575, 599 West United States, the Craniology of, R. W. Shufeldt, 181;
Zoological Results of the Challenger Expedition, 217

a Milk Dentition in Orycteropus, O. Thomas, 309; the Cata-
Zoology : Who Discovered the Teeth in Ornithorhynchus ?, C. logue of the Indian Museum, 594

Hart Merriam, 11, 151; Prof. W. H. Flower, F.R.S., 30 151; Zsigmondy (Dr. Emil), his Alpine Expeditions, 291
Prof. Oswald H. Latter, 30, 174; the Old English Black Zwardmaaker (Dr.), Olfactometer, 349

[graphic][ocr errors][subsumed]

A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE.

To the solid ground
of Nature-trusts the mind which builds for aye.”—WORDSWORTH.

NALDER BROS., & Co.,

No. 1045, VOL. 41.] THURSDAY, NOVEMBER 7, 1889. [PRICE SIXPENCE. Registered as a Newspaper at the General Post Office.)“.

[All Rights are Reserved. NEWTON & CO., SCIENTIFIC. INSTRUMENT

Sole Makers of Profs. AYRTON and PERRY'S
MAKERS

LATEST TYPE OF SECOHMMETERS. AND STANDARDS
TO HER MAJESTY THE

OF SELF-INDUCTION.
QUEEN

,132 HORSEFERRY ROAD, WESTMINSTER.
AND THE GOVERNMENT. TELEPHONE 3120.

TELEGRAPHIC ADDRESS : SECOHM, LONDON,
Makers of every descrip:
tion of OPTICAL and
PHYSICAL APPARA-
TUS of the highest class,
for Colleges, Institutions,
&c.

Catalogue of
OPTICAL LANTERNS,
PROJECTION APPA
RATUS, & SLIDES, 3d.

[graphic]
[graphic]

PRICES ON APPLICATION.

[ocr errors]

SECOHMMETER.
NEGRETTI AND ZAMBRA'S
OPERA, RACE, & FIELD GLASSES

OF EVERY DESCRIPTION.

NEW ILLUSTRATED

CATALOGUE OF
SCIENTIFIC APPARATUS,

144 pages, 6d.
WIMSHURST ELECTRICAL MACHINE.
Best Quality, giving full 45-inch Spark in Air, Es. As made for the

Science and Art Department.

NEWTON & CO., 3 FLEET STREET, TEMPLE BAR, LONDON, E.C. THE CAMBRIDGE SCIENTIFIC INSTRUMENT COMPANY,

ST. TIBB'S ROW, CAMBRIDGE.

RADIO-MICROMETER.
Designed under the direction of Mr. c. V. BOYS, F.R.S. See his paper in

Phil. Trans. of the Royal Society, vol. 180 (1889), A. 41.
Price and Description will be sent on Application.,

QUARTZ FIBRES.
Made by the method described by Mr. C V. BOYS, in his paper on the

Production, Properties, and some Suggested Uses of the Finest Fibres"
(Phil. Mag., June 1887).
The Cambridge Scientific Instrument Company are now manufacturing
the above in various thicknesses, and have a quantity on hand for immediate
delivery.

Now Ready, Vol. X. Complete.
Price to Subscribers 215. per Yearly Volume, post free.
THE JOURNAL OF PHYSIOLOGY.
Edited, with the Co-operation in England of Prof. W. RUTHERFORD,
F.R.S., of Edinburgh, Prof. J. BURDON-SANDERSON, F.R.S.,
of Oxford : and in America of Prof. H. P. BOWDITCH, of Boston;
Prof. H. NEWELL MARTIN, F.R.S., of Baltimore; Prof. H. C.
WOOD, of Philadelphia,

BY MICHAEL FOSTER, M.D., F.R.S.

Published by the Proprietors and sold on their behalf at
TBE CAMBRIDGE SCIENTIFIC INSTRUMENT COMPANY'S WORKS,

ST. TIBB'S ROW, CAMBRIDGE.

[merged small][ocr errors][merged small][merged small][graphic][merged small]

THE VICTORIA UNIVERSITY. LIVING SPECIMENS FOR THE MICROSCOPE.

THE EXTERNAL EXAMINERS OF THE UNIVERSITY, GOLD MEDAL awarded at the FISHERIES EXHIBITION T. ARNOLD, M.A., Fellow of the Royal University of Ireland, Examiner THOMAS BOLTON, 83 CAMDEN STREET, BIRMINGHAS, T. G. BONNEY, D.Sc., LL.D., F.R.S., Professor of Geology in University and description. He also sent out Paludicella Ehrenbergii, Philodina roseola

Who last week sent to his subscribers Stentor polymorphus, with sketch E. BRAUNHOLTZ, M.A., Ph.D., University Lecturer in French, Cam

Hydrodictyon utriculatum, Leptodora hyalina, Corethra, Floscularia, Clathru bridge Examiner in French Language and Literature.

lina elegans, Limnias ceratophylli, Melícerta ringens, Stephanoceros, Volvos J. A. EWING, B.Sc., F.R.S., Professor of Engineering in University globator ; also Amceba, Hydra, Vorticella, Crayfish, Dog-fish, Amphi oxus, College, Dundee. Examiner in Engineering.

and other Specimeas for Biological Laboratory work. WILLIAM GARNETT, M.A., D.C.L., Principal of Durham College of Weekly announcements will be made in this place of Organisms T. B Science, Newcastle-on-Tyne, Examiner in Physics.

is supplying. A. PEARCE GOULD, M.S., F.R.C.S., Surgical Tutor in Middlesex Hospital. Examiner in Surgery.

Specimen Tube, One Shilling, post free. A. V. HARCOURT, M.A., F.R.S., Reader in Chemistry in the University of Oxford, Examiner in Chemistry.

Twenty-six Tubes in Course of Six Months for Subscription of 41 12.. *MATTHEW HAY, M.D., C.M. Professor of Medical Jurisprudence,

or Twelve Tubes for rok. 6d.
Aberdeen, Examiner in Materia Medica and Pharmacy.
G. ERNEST HERMAN, M.B., F.R.C.P., Lecturer on Midwifery in

Portfolio of Drawings, Eleven Parts, 1S. each.
London Hospital, Examiner in Obstetrics.
VICTOR HORSLEY, M.B., F.R.C.S., F.R.S., Professor of Pathology in
University College, London, Examiner in Pathology:

OWENS COLLEGE,
FRANZ LANGE, Ph.D., Professor of German in the Royal Military
Academy, Woolwich, Examiner in German Language and Literature,

MANCHESTER.
*WILLIAM RAMSEY MNAB, M.D., F.L.S., Professor of Botany in
the Royal College of Science, Ireland, Examiner in Botany.

BISHOP BERKELEY FELLOWSHIPS. A. G. PESKETT, M.A.,

Fellow and Tutor of Magdalene College, Cambridge, Examiner in Classics.

(Value $100 for one year, and renewable for a second year.) REGINALD L. POOLE, M.A., Ph.D., Lecturer on Modern History in Jesus College, Oxford, Examiner in History,

At least two are offered for award in December next. Applications must G. V. POORE, M.D., F.R.C.P., Professor of Medical Jurisprudence in

be sent to the REGISTRAR on or before NOVEMBER 25. Evidence of University College, London, Examiner in Forensic Medicine and

ability to prosecute some special study or research in any of the following Hygiene.

subjects must be presented *F. T. ROBERTS, M.D., F.R.C.P, Professor of Clinical Medicine in Classics.

Physics. University College Hospital, London, Examiner in Medicine.

English Language and Literature. Chemistry. EDMUND ROBERTSON, M.A., M.P., (late) Professor of Roman Law History.

Botany. in University College, London, Examiner in Law.

Philosophy.

Zoology, W. R. SORLEY. M.A., Professor of Philosophy in University College, Economic Science.

Geology (including Palæontology). Cardiff, Examiner in Philosophy and Political Economy.

Pure Mathematics.

Physiology. H. M. TAYLOR, M.A., Fellow and Mathematical Lecturer of Trinity

Applied Mathematics.

Pathology. College, Cambridge, Examiner in Mathematics.

Engineering.

Pharmacology. G. D. THANE, M.R.C.S.,

Professor of Anatomy in University College, London, Examiner in Anatomy.

A fuller Statement of Particulars and Conditions will be forwarded on D'ARCY W. THOMPSON, B.A., Professor of Zoology in University Col. application.

lege, Dundee, Examiner'in Zoology. AUGUSTUS D.'WALLER, M.D., Lecturer on Physiology in St. Mary's

HONORARY RESEARCH FELLOWSHIPS. Hospital Medical School, London, Examiner in Physiology.

A limited number of Appointments will be made in December next

Application must be made on or before NOVEMBER 26. There are no The Examiners against whose names an asterisk (*) is placed retire at

emoluments attached to these Fellowships, but Fellows have equal opporthe end of November. Applications are invited for the posts they now fill,

tunities for research in scientific subjects to those enjoyed by the Bishop which should be sent in on or before NOVEMBER

30, and may be Berkeley Fellows. accompanied by Testimonials (Copies only) or References, at the Candidate's

A fuller statement will be forwarded on application. discretion. The appointments will be for Three Years, at the expiration of

HENRY WM. HOLDER, M.A., Registras. which Examiners are not re-eligible. For further Particulars, apply to

A. T. BENTLEY, M.A., Registrar. OWENS COLLEGE, MANCHESTER. Manchester, October 1889.

The Senate invites Applications for the post of SENIOR DEMONTHE MASON COLLEGE,

STRATOR in PHYSIOLOGY, at a Stipend of £150 per Annum.

A detailed statement of the duties, &c., may be obtained from the BIRMINGHAM.

REGISTRAR.

Applications, with Testimonials, should be addressed to the Senate, under PROFESSORSHIP OF THE FRENCH LANGUAGE AND cover to the REGISTRAR, not later than NOVEMBER 20. LITERATURE

HENRY WM. HOLDER, M.A., Registrar. The Council invite Applications for the above Professorship, vacant by the Annum, plus one half of the Fees from Day Students, and the whole of the AN UNDERGRADUATE OF LONDON Fees from Evening Students.

UNIVERSITY (Honours Man at Preliminary Scientific) is prepared to Applications, accompanied by Ten Copies of Testimonials, should be sent

coach or take Classes in Zoology, Botany, Physics, &c. He has already to the undersigned not later than November 30, 1889.

had success in passing Pupils. Terms Moderate. First Class Test:The successful Candidate will be expected to enter upon his duties on January 21, 1890.

monials.-Address WILFRED MARK WEBB, Biological Laboratory, Candidates are especially requested to abstain from canvassing.

Lonsdale Chambers, Chancery Lane. Further Particulars may be obtained from GEO. H. MORLEY, Secretary. A GENTLEMAN engaged in ORIGINAL

RESEARCH wishes to meet someone who, being capable, would be BALLIOL COLLEGE, CHRIST CHURCH, willing to employ his spare time in cutting Thin Sections for the Micro

scope. --Address by letter, stating terms, to "F.S.S.," 13 Cromwell

Crescent, South Kensington. TRINITY COLLEGE, OXFORD. NATURAL SCIENCE SCHOLARSHIPS AND EXHIBITIONS. MR. ERIC STUART BRUCE, M.A. Oxon.,

A combined Examination for Natural Science Scholarships and Exhibi F.R.Met. Soc., can accept ENGAGEMENTS for the delivery of his tions will be held by the above Colleges, beginning on TUESDAY,

eminently successful Popular Lectures on Scientific Questions of the NOVEMBER 19, 1889.

Day. Brilliant Experiments.-Address, E. Bruce, Esq., to Observatory Three Scholarships and two Exhibitions will be offered, the Scholarship

Avenue, Kensington, London, W. being worth £,80 a year. The subjects for examination will be Physics, Chemistry, and Biology, but Candidates will not be expected to offer themselves in more than two of OAMARU DIATOM DEPOSITS.-Finest these.

Selected, ounce Packet, 7d. Stamps ; ounce, is. id. ; 1 ounce, 23. Particulars may be obtained by application to A. Vernon Harcourt,

Postal Order. All Post Free.-JOHN ALCOCK, Cheadle, Staff. Christ Church, Oxford. The READING of “NATURE” for the BOTANICAL and ZOOLOGICAL SPECI.

Second Week after Publication will be given for one-third of its price. MENS from the Equatorial Flora and Fauna, especially Orchids and Apply to Dr. Woods, Parsonstown.

Butterflies.-A. H. REMPEN, Pará, Brazil.

[graphic]

AND

Sale by Auction.

JOHN J. GRIFFIN & SONS, LIMITED,

[ocr errors]
[ocr errors]

TUESDAY, NOVEMBER 12,

MANUFACTURERS OF
BIRDS EGGS AND LEPIDOPTERA.

CHEMICAL & PHILOSOPHICAL APPARATUS. Mr. J. C. STEVENS will Sell by Auction,

at his Great Rooms, 38 King Street, Covent Garden, on TUESDAY
NOVEMBER 12, at half-past 12 precisely, a Collection of British

NOW READY,
Birds' Eggs, Nests, and Clu ches. Als) British Birds' Skins, and a
Collection of Lepidoptera, being for the most part the Collections of the

Illustrated Classified and Descriptive bottes Pascal y me cover of labour and Choice Huaming Birds CATALOGUE of CHEMICAL APPARATUS, late P. H. RYI ANDS, Esq., of Manchester, and MORGAN DAVIES, Esq., and others, a Collection of Australian Eggs, Cabinets, &c., all in fine condition.

Royal 8vo, 113 pp., Illustrated with nearly 600 Woodcuts, On View the Day prior from 2 till 5, and Morning of Sale, and

6d., Post free. Catalogues had

22 GARRICK STREET, COVENT GARDEN,

LONDON, W.C.
KEBLE COLLEGE.
SCIENCE SCHOLARSHIP.

KING, MENDHAM, & Co., An Examination for a NATURAL SCIENCE SCHOLARSHIP will be held at this College, beginning on TUESDAY, DECEMBER 10, 1889.

Electrical Engineers The value of the Scholarship is 480 for four years.

AND The Subjects for examination will be Bivlogy and Chemistry. Candidates

Manufacturing Electricians. may offer either one or both Subjects. Particulars may be obtained by application to Oswald H. Latter,

SPECIALTIES.-K.M.B. Patent Keble College, Oxford.

Pocket Galvanometer. Price, Post free, 125. 9d. ; Case, is. 6d extra. Testing Instruments, Primary Batteries, Wims

[graphic]
[graphic]

hurst Machines of Impruved Pattern. TO SCIENCE LECTURERS.

Western Electrical Works, See Mr. HUGHES'S PATENT COMBINATION OPTICAL LAN.

BRISTOL
TERN, used by W. LANT CARPENTER, Esq., Prof. FORBES, B. J. MALDEN,
Esq. New Oxyhydrogen Microscope. Grand Results. Docwra Triple,
Prize Medal, Highest Award. Patent Pamphagos Lantern Science Lecture

New ILLUSTRATED CATALOGUE, Sets. Novelties Cheapest and Best. Elaborately Illustrated Catalogue,

Post free, 4 d. 300 Pages, 15. : Postage, sd. Smaller do., 6d. Pamphlets Free. HUGHES, Specialist, Brewster House, Mortimer Road, Kingsland, N.

TUDSBURY & SONS'

NEW HIGH-TENSION EBONITE A LADY, having been Science Mistress in

"CYLINDER" WIMSHURST a High School for five years. desires an Engagement as SECRETARY

ELECTRIC MACHINE. or LITERARY ASSISTANT to a person engaged in Scientific Work. Diagrams drawn.-Address, "E. W., " 13 Shaf.esbury Road, Southsea.

Four cylinders, immense power. Simplest, best, and cheapest Machine yet invented. Further Improvements this Season. Dr. BREWER, the well

known author, says of our Machines :-"Far more MICROSCOPES, OBJECTS, &c.

perfect than any hitherto invented." CYLINDER

MACHINE, GIVING 6-INCH SPARK, £3 7s. New Mounted Objects of every description. Entertaining Slides for Evening

Illustrated Catalogue, One Stamp.
Exhibition, ss. dozen. Microsc pes, Accessories, Mounting Requisites.
Catalogues Free. HENRY EBBAGE, 344 Caledonian Road, London.

EDWINSTOWE, NEWARK.

CONTINUOUS FOR SALE.-A Complete Set of "Nature" (nearly 40 Volumes), with all the Portraits and other Plates. Twenty

RECORD eight Volumes are bound (in Publishers' covers); the remainder is in numbers. - Address, "R. G.," Narure Office.

(GRAY-MILNE).

STANDARD ELECTRIC INSTRUMENTS FOR SALE.-ASTRONOMICAL TELE.

(SIR WILLIAM THOMSON'S). SCOPE, with Portable Universal Equatorial Mounting. Objective, 4 inches, Finder, Eye-pieces, &c. A Superior Instrument, by Cooke, of York. --Address, " Z.," 75 Manningham Lane, Bradford.

For Price and all Particulars apply to Maker,

JAMES WHITE, Optician, MANUSCRIPT COPYING

209 SAUCHIEHALL STREET, GLASGOW. By Typewriter. Special attention given to Papers on Technical Subjects for Public Reading.

GALTON'S WHISTLES Price, 15. 3d. per 1000 Words. Manifold Copies, is. per 1000 Words. STANDARD TYPEWRITING CO., 90 & 91 Queen St. (third floor), E.c. For Determining the Upper Limits of Audible Sound

in Different Persons. WEAK AND DEFECTIVE SIGHT.

Prices los. 6d. and 215.
SPECTACLES scientifically adapted to remedy impaired vision by
Mr. ACKLAND. Surgeon, daily, at HORNE AND THORNTHWAITE's,

GEORGE SPILLER,
Opticians to the Queen. 416 Strand, London. The weak-sighted should
read Ackland's "Hints on Spectacles," 6d., post free.

MANUFACTURING OPTICIAN,

3 Wigmore Street, W. SILVERED-GLASS REFLECTING TELESCOPES.

GENUINE ONLY DIRECT FROM

SUTTON AND SONS, CALVER'S well-known TELESCOPES received the Highest Award for "Excellence and Improvements" at the International Exhibition, London. Catalogues and Testimonials, 1s.-G. CALVER, F.R.A.S., 'Widford,

SUTTON'S

READING.
Chelmsford.

For full particulars, see
BULBS.

SUTTON'S BULB CATALOGUE, OSTEOLOGICAL SPECIMENS,

Beautifully Illustrated, 6d., post free. MODELS, &c.-MOORE BROS., 49 Harimai Street, Liverpool.

Complete Priced List of Bulbs gratis and Price List, Three Stamps.

post free.

SEISMOGRAPH RECORDS)

« PreviousContinue »