Page images
PDF
EPUB

Sale by Auction.

[blocks in formation]

ETHNOGRAPHICAL COLLECTION AND ART CURIOS.
MR. J. C. STEVENS will Sell by Auction,

MONDAY and TUESDAY, NOVEMBER 14 and 15, the FIRST
PORTION of an entire and valuable COLLECTION OF ETHNO-
GRAPHICAL SPECIMENS and CURIOS from all parts of the
World Tbis Collection is held to be the largest outside any Museum,
and has taken many years to form.
Catalogues in course of preparation. All particulars may be had of
Vr. J.C. STEVENS, 38 King Street, Covent Garden, London, W.C.

PHENIX
ASSURANCE COMPANY, LIMITED.

FIRE OFFICE.
19 LOMBARD ST., E.C., and 57 CHARING CROSS, S.W.

ESTABLISHED 1782.
Moderate Rates. Absolute Security. Electric
Lighting Rules Supplied. Liberal Loss Settlements.

Prompt Payment of Claims.
LOSSES PAID OVER £26,000,000.

SPECIAL SHOW-ROOM FOR CABINETS.

Dr Our Catalogue (96 pp.) Post free on application.
N.B.-For Excellence and Superiority of Cabinets and
Apparatus, references are permitted to distinguished
patrons, Museums, Colleges, &c.
A LARGE STOCK OF INSECTS, BIRDS' EGGS

AND SKINS.
Birds, Mammals, &c., Preserved and Mounted by First-class Workmen

true to Nature.
All Books and Publications on Natural History supplied.
36 STRAND, LONDON, W.C.

(Five Doors from Charing Cross.)

BIRK BECK BANK

ROCKS, MINERALS, FOSSILS. ESTABLISHED 1851.

For Collectors, Students, Technical Schools, Colleges, &c. Current Accounts. 2% Interest allowed on minimum monthly balances when not drawn below £100.

COLLECTIONS IN POLISHED DEAL BOXES.

25 Specimens, 5/6; 50 do., 10/6; 100 do., 21/-; 200 do., 42/Deposits. 21' Interest allowed on Deposit Accounts.

20 Coal Measure Rocks and Fossils, 12/6; do., larger, 15/-. Advances made. Stocks and Shares bought and sold.

Adapted for the Board of Education Examinations in Apply C. F. RAVENSCROFT, Secretary,

Geology, Physiography, and Mineralogy.
Southampton Buildings, High Holborn, W.C.

A large stock of Minerals, Rocks, Fossils and Microscopic Objects for

selection. 'Specimens sent on approval. TO SCIENCE LECTURERS.

Cabinets, Geologists' Hammers, Chisels, Card Trays, Glass-capped

Boxes, Models of Crystals, &c., &c.
HUGHES' PHOTO - ROTOSCOPE CINEMATOGRAPHS.

NEW CATALOGUE POST FREE.
THE MOST PERFECT. No Flickering. Superb Mechanism.
Price £7 7 0. The Moto-Photo Camera for taking the Pictures.

THOMAS D. RUSSELL, 78 Newgate St., London, E.C.
Mustrated Lists, 2d.
See Mr. Hognes' PATENT COMBINATION OPTICAL LANTERN,

LIVING SPECIMENS FOR &c. Miniature Triple Lantern constructed for B. J. MALDEN, Esq. ; great tore. New Oxybydrogen Microscope. Science Lanterns for Class De.

THE MICROSCOPE. sonstration Magnińcent

Results. Docwra Triple, Prize Medals, Highest Award Supplied to the Royal Polytechnic Institution, Dr. H. GRATTAN

Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actinosphærium, Gowns, &c. Patent Pamphengo Science

Lanterns. The Universal Lasten --inch Condensers, 4-wick Lamp, Portrait Combination front

Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, Melicerta, and many

other specimens of Pond Life. Price is. per Tube, Post Free. Helix Less, 185. 6d. Marvellous value. Science Lecture Sets. Novelties.

pomatia, Astacus, Amphioxus, Rana, Anodon, &c., for Dissection purposes. Ite Lantern Kaleidoscope. Cheapest Lantern Outfits in the World. Crandly Mastrated Catalogue, over 180 choice Engravings, 6d. ;

THOMAS BOLTON, Patage, ud. Small Illustrated Catalogue, 100 pages, free, 5d. List of 0,000 Slides and 300 Lecture Sets, Science Subjects, Views, &c., 6d.;

25 BALSALL HEATH ROAD, BIRMINGHAM. Postage, ad Pamphlets Free. W. C. HUGHES, SPECIALIST, Brewster House, 82 Mortimer Road, Kingsland. N.

MARINE BIOLOGICAL ASSOCIATION

OF THE UNITED KINGDOM. Kinerals, Rocks, Fossils, Metallic Ores, Rough Precious Stones, &c.

THE LABORATORY, PLYMOUTH. Collections of above for Prospectors, Mining Engineers, The following animals can always be supplied, either living Technical Schools, and for Private Study.

or preserved by the best methods :RADIUM, PITCHBLENDE, &c. Sycon ; Clava, Obelia, Sertularia ; Actinia, Tealia, Caryophyllia, AlcyROCK SECTIONS.

onium; Hormiphora (preserved); Leptoplana; Lineus, Ampbiporu:,

Nereis, Aphrodite, Arenicola, Lanice, Terebella ; Lepas, Balanus, ALL LISTS FREE OF

Gammarus, Ligia Mysis, Nebalia, Carcinus; Patella, Buccinum, Eledone, JAMES R. GREGORY & CO.,

Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echious.

Ascidia, Salpa (preserved), Scyllium, Raia, &c., &c.
MINERALOGISTS, &c.,

For prices and more detailed lists apply to
To Sciest & Art Department, British, Indian, & Colonial Museums, &c.

Biological Laboratory, Plymouth.

THE DIRECTOR. Omco and stores :1 KELSO PLACE, STANFORD RD., KENSINGTON, W. ALBERT EDWARD JAMRACH TYPE-WRITING UNDERTAKEN BY

(Late CHARLES JAMRACH), HIGHLY EDUCATED WOMEN ACCUSTOMED TO SCIEN

NATURALIST,
TIFIC MSS. (Classical Tripos, Intermediate Arts, Cambridge Higher
Lal, thorough acquaintance with Modern Languages). Research,

180 ST. GEORGE STREET EAST. Revaian, Translation. Scale of charges on application. The Cam- Implements of Savage Warfare, Idols, Sacred Masks, Peruvian Pottery, brudge Type-writing Agency, 10 Duke Street, Adelphi W.C.

Netsukis China, Lacquers, Gongs, Shells, and other Curios.

[ocr errors]
[ocr errors]

6

NOTICE.-Advertisements and business letters for Nature should be addressed to the Publishers; Editorial
Communications to the Editor. The telegraphic address of Nature is “Phusis," LONDON.
SUBSCRIPTIONS TO “NATURE."

CHARGES FOR ADVERTISEMENTS.
s. d. | TO ALL PLACES ABROAD:- & s. d.

s. d.

& s. d. Yearly *Three Lines in Column

6 Quarter Page, or Half

a Column Half-yearly

0 15 6 One Sixteenth Page,or Eighth Col. 10 Quarterly

Half a Page, or a Column 3 5 o o One Eighth Page, or Quarter Column o 18 6 | Whole Page

6 6 0 • The first line being in heavy type is charged for as Two Lines, Cheques and Money Orders payable to MACMILLAN & CO., Limited.

OFFICE: ST. MARTIN'S STREET, LONDON, W.C.

Per Line after

[ocr errors]

2 o

1 15

[ocr errors]

.

8 O 014 6 0 7 6

9 o

[ocr errors]
[ocr errors]

8

[graphic]

TOWNSON & MERCER.

ESTABLISHED 1798 (over A CENTURY). RETAIL-89 BISHOPSCATE STREET WITHIN, E.C. WHOLESALE—34 CAMOMILE STREET. EC

Scientific Apparatus Manufacturers and Laboratory Outfitters to the Home and Colonial Departments of H.M. Governwent, Scientific Institutions, Colleges, and the various Industries throughout the World.

THE

including several new forms for LABORATORY PURPOSES. POST FREE ON APPLICATION.

NATURE says :-" add to the comfort and cleanliness of many operations in laboratories as well as in houses. The adaptability of the electric current, and the efficiency of the various forms of apparatus described in Messrs. Isenthal's catalogue, should encourage the use of electric energy as a source of heat.” (See issue of September 22, 1904, page 511.)

WANNER PYROMETER

FOR

PURE BROMIDE OF RADIUM

MEASURING TEMPERATURES

FROM
900° C. to 2000 C. or 4000°C.
Special advantages of this Pyrometer:

Exact determination of temperature.
Rapidity in reading off (within 2 to

3 secs.). Can be used by any intelligent workman. One instrument suffices for several furnaces.

OF HIGH ACTIVITY.

Radium of the maximum activity, Wireless Telegraphy and other apparatus may be had on hire for Conversaziones, &c.

ISENTHAL & CO.,

85 MORTIMER STREET, LONDON, W. Contractors to the Admiralty, War, India, and Colonial Offices, &c.

May be obtained from TOWNSON & MERCER,

34 CAMOMILE STREET, E.C.

[graphic]

THE STEREOSCOPIC COMPANY'S

CARBONIC ACID IN AIR. ARTIST'S

PRICE, in Mahogany

Cabinet complete, £3: 3:0

REFLEX

CAMERA.

e

M

The finest possible instrument for all practical .. purposes, embodying every scientific requirement.

This is a small portable apparatus designed by Dr. J. S. HALDANE, F.R.S., for the use of Medical Officers of Health, &c. A sample of air can, by means of this apparatus, be tested on the spot, the whole operation being quite simple.

[graphic]

See Commendatory Notice in “NATURE,”

August 13th, 1903, page 347.

[ocr errors]

SOLE MAKERS

The Ideal Camera for BIRD PHOTOGRAPHY, NATURAL

HISTORY SUBJECTS, PORTRAIT AND FIGURE STUDIES, ARCHITECTURAL & GENERAL WORK.

Write for full particulars from ... THE LONDON STEREOSCOPIC COMPANY, 106 & 108 REGENT ST., W., or 54 CHEAPSIDE, E.C.

ESTABLISHED OVER 60 YEARS.

C. E. MÜLLER, ORME & CO., Ltd.,

148 High Holborn, London, W.C.

Printed by RICHARD CLAY AND SONS, LIMITED, at 7 & 8 Bread Strett Hill, Queen Victoria Street, in the City o London, and published by MACMILLAN

AND Co., LIMITED, at St. Martin's Street, London, W.C., and THE MACMILLAN COMPANY, 66 Fifth Avenue, New York. -THURSDAY, Nov. 3, 1904.

[graphic]

A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE

To the solid ground
Of Nature trusts the mind which builds for aye."—WORDSWORTH.

[PRICE 15 CENTS.

No. 1828, VOL. 71] THURSDAY, NOVEMBER 10, 1904.
Registered as a Newspaper at the General Post Office.)

(All Rights are Reserved.

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

...

CITY OF LONDON COLLEGE.

...

EAST LONDON TECHNICAL BIRKBECK COLLEGE COLLEGE,

BREAMS BUILDINGS CHANCERY LANE, EC.
MILE END ROAD, E.

FACULTY OF SCIENCE.
TEACHING STAFF.

DAY AND EVENING COURSES.
Mathematics
J. L. S. HATTON, M.A., and

Chemistry
W. F. S. CHURCHILL, M.A.

ST. E. MACKENZIE, Ph.D., D.SC

H. WREN, Ph.D., B.A., B.Sc. Chemistry... J. T. Hewitt, D.Sc., and

(Albert GRIFFITHS, D.Sc. 1 C. SMITH, D.Sc. Physics ...

D. OWEN, B.A., B.Sc.
Mechanical Engineering... D. A. Low, M.I.M.E.

B. W. CLACK, B.Sc.
Electrical Engineering
J. T. MORRIS, A.M.I.E.E.
Mathematics

E. H. SMART, M.A.
Physics
R. A. LEHFELDT. D.Sc., and

1 W. G. Birt, B.A., B.Sc.
W. H. WHITE, B.A., B.Sc.
Botany

SA. B. RendLE, M.A., D.Sc.
Botany
V. H. BLACKMAN, M.A.

F. E. FRITSCH, Ph.D., B.Sc. The DAY CLASSES for students over 16 years of age include full three Zoology...

H. W. UNTHANK, B.A., B.Sc years' technical courses in Chemistry and Engineering, and three years' Geology & Mineralogy Geo. F. HARRIS, F.G.S. courses for London University Degrees (Pass and Honours).

Assaying, Metallurgy & Mining. Geo. PATCHIN, A.R.S.M EVENING CLASSES are held in Advanced Technical and Scientific RESEARCH in Chemistry and Physics in well-equipped laboratories subjects, and for London University Degrees. Valuable SCHOLARSHIPS are awarded by the Drapers' Company in

French, German, Spanish, Russian, Dutch, & Italian Classes connection with the Day Classes.

EVENING CLASSES also in Biology, Physiology, Practical Geometry CALENDAR with full particulars post free, 4fd.

Building and Machine Construction, Steam, Theoretical and Applied J. L. S. HATTON, Director of Studies.

Mechanics, Land and Quantity Surveying, and Estimating.

Calendar 6d. (post free 8d.), on application to the SECRETARY.
THE SIR JOHN CASS TECHNICAL

INSTITUTE,
JEWRY STREET, ALDGATE, E.C.

WHITE ST., MOORFIELDS, E.C.
Principal
CHARLES A. KOHN, M.Sc., Ph.D., F.I.C.

(Near Moorgate and Liverpool Street Stations.) EVENING CLASSES in CHEMISTRY, METALLURGY, PHYSICS and MATHEMATICS designed to meet the requirements of

PRINCIPAL: SIDNEY HUMPHRIES, B.A., LL.B. (Cantab.) those engaged in CHEMICAL, METALLURGICAL and ELECTRICAL INDUSTRIES and in trades associated therewith.

EVENING CLASSES in ALL BRANCHES of SCIENCE Also preparation for the B.Sc. Examination of London Uni. versity.

Well-equipped LABORATORIES for Practical Work in Chemistry

{
CHARLES A. Kohn, M.Sc., Ph.D., F.I.C., CHEMISTRY, BIOLOGY, BOTANY, GEOLOGY, and

and H. BURROWS, A.R.C.S., Ph.D., F.I.C.
Physics
R. S. Willows, D.Sc., M.A.

all branches of PHYSICS. Metallurgy C. O. BANNISTER, Assoc. R.S.M.

Special Courses for London University Matric., Inter., and Final B.A., Mathematics G. M. K. LEGGETT, B.A.

B.Sc., Conjoint Board, Pharmaceutical and other examinations. Classes Every facility for special and advanced practical work in well-equipped are also held in all Commercial Subjects, in Languages, Literature and Art laboratories both in the afternoon and evening.

All Classes are open to both sexes.
NEW SESSION began MONDAY, SEPTEMBER 26.
The Institute is readily accessible and near to Fenchurch Street, Liver.

SATURDAY COURSES for Matric., Inter., and Final B.A., B.Sc.

DAY COMMERCIAL SCHOOL. pool Street, Broad Street and Metropolitan Railway Stations. For details of the Classes apply at the Office of the Institute, or by

Prospectuses, and all other information, gratis on application. letter to the PrincipAL.

DAVID SAVAGE, Secretary. W. H. DAVISON, M.A., Clerk to the Governing Body.

B.A. AND B.Sc. EXAMS. BALLIOL COLLEGE, CHRIST

MATRICULATION, INTERMEDIATE, FINAL. CHURCH, AND TRINITY COLLEGE,

PREPARATION by CORRESPONDENCE and ORAL TUITION OXFORD

a THOROUGHLY INDIVIDUAL SYSTEM. Fees based on A Combined Examination for Natural Science Scholarships and Exhibi- The STAFF includes Graduates of Oxford, Cambridge, London, and tions will be held by the above Colleges, beginning on TUESDAY, Royal Universities, Science Medallists, Prizemen, Scholars, &c. DECEMBER 6, 1904.

SINGLE SUBJECTS TAKEN: Science, Mathematics, Logic, Three Scholarships and three Exhibitions will be offered ; with one ex. Psychology, Political Economy, Latin, Greek, French, German, &c. ception the value of these endowments will be £80 a year.

For terms, &c., address Mr. J. CHARLESTON, B.A. (Lond. and Oxon.),
The Subjects for Examination will be Physics, Chemistry, and Biology. Burlington Correspondence College, Clapham Common, S.W.
Candidates will not be expected to offer more than two of these.

Particulars may be obtained by application to D. H. Nagel, Trinity PATENT OFFICE APPOINTMENTS.
College, Oxford.

Instruction in all the subjects of this Examination, in Day and Evening BOROUGH OF LONGTON (STAFFS.) Classes. Bilix students gained appointments at the July Examination.

Birkbeck
EDUCATION COMMITTEE.
LONGTON HIGH SCHOOL (SECONDARY DAY SCHOOL) AND

UNIVERSITY OF BIRMINGHAM.
SUTHERLAND TECHNICAL INSTITUTE.

(FACULTY OF MEDICINE.) WANTED, to commence duty at the beginning of January next, an

PROFESSORSHIP OF ANATOMY. ASSISTANT MASTER for LANGUAGES, to teach French and

The Council invites applications for the CHAIR OF ANATOMY. German ; should also be able to teach Elementary Latin in the Evening Stipend, £800 per annum. The successful Candidate will be required to Classes. Salary, £120 per annum. Applications, stating age, qualifications, and previous experience, and

enter on his duties in January, 1905.

Applications, accompanied by sixty copies of testimonials, or such other accompanied by copies of not more than three recent testimonials, to be

credentials as the Candidates may prefer to offer, should be sent to the sent in to the undersigned not later than November 24, 1904.

undersigned on or before November 26, 1904. W. T. COPE, Secretary to the Education Committee. Further particulars may be obtained from Court House, Longton.

GEO. H. MORLEY, Secretary. IMPERIAL INSTITUTE, SOUTH

TO SCIENCE AND MATHEMATICAL

MASTERS.-- January (1905) Vacancies:-Required (1) Two Masters KENSINGTON, S.W.

for Mathematics and Experimental Physics. Salaries, £160 and £150

respectively: . (2) Science and Drawing. £!50. (3) Graduate or later. A CHEMICAL ASSISTANT is required in the Scientific and Technical B.Sc. for Science and Math. 6100, resident. (4) Chemistry and Department of the Imperial Institute. Experience of investigation in Physics, £100, resident. (5) Graduate for Science and Form work. Organic Chemistry essential. Applications to be made in writing.

£100, resident. For particulars of the above and many other vacancies, WYNDHAM R. DUNSTAN, Director. address Griffiths, Smith, Powell & Smith, Tutorial Agents (Estd. November 3, 1904.

1833), 34 Bedford Street, Strand, London. UNIVERSITY COLLEGE, READING.

Englishman (27), with Five Years' German

University Training and Ph.D. degree, speaking German fluently, DEPARTMENT OF AGRICULTURE.

desires situation in Manufactory, preferably of Dyes or Organic An ASSISTANT LECTURER in AGRICULTURE will shortly be Chemicals. Apply to "W., "c/o NATURE. appointed. Applications, with testimonials, should be sent to the Registrar on or before November 16, 1904.

For other Scholastic Advertisements, see page xii.

[graphic]

on
success.

[graphic]

TRADE
MARK

ABLOID BRAND PHOTOGRAPAIC CAEMICALS

NO WEIGHING
NO MEASURING
NO WASTE

[graphic]

ALWAYS READY
ALWAYS ACCURATE
ALWAYS RELIABLE

HANDY INANY DARK ROOM
ABSOLUTELY INDISPENSABLE
TO TOURISTS

Bold by all Chemisto
and Dealers

BURROUGHS WELLCOME & CO

SNOW HILL BUILDINGS, LONDON.

RECTIFIED SPIRIT

(SPIRITS OF WINE). B.P. and higher strengths. Duty paid; or Duty

Free under Finance Act 1902.

TYPE-WRITING UNDERTAKEN BY

HIGHLY EDUCATED WOMEN ACCUSTOMED TO SCIEN.
TIFIC MSS. (Classical Tripos, Interinediate Arts, Cambridge Higher
Local, thorough acquaintance with Modern Languages). Research,
Revision, Translation. Scale of charges on application. The Cam-
bridge Type-writing Agency, 10 Duke Street, Adelphi W.C.

ON SALE.
Three First-class Telescopes : 4" clear aperture, perfect definition,
with starfinder, astro. and day eyepieces, &c., rigid mahogany garden stand,
kw condition, price £22; 3)". clear aperture, similar accessories and stand,
price only £10 10s. ; 3i", with similar accessories, but with brass pillar
and claw stand, in addition to garden stand, only £9 10s.-Zeiss' Pris-
matic Field Glass, cost 411, offered for £6.-Bacteriological Micro-
scopes by BROWNING, Powell & LEALAND, and others; complete outfit,
including best substage illuminator and 7" or " objectives, for £11. -
3 Petrological Microscopes by Watson, and Swift, in perfect order,
from £7.-3 Students' Microscopes, from £2 10s.- Microscope
Objectives by all best makers, " for £2 10s., to" for £3 3s., on
approval. - Microscope Slides, 50 for 12s., or customer's choice 4s. per
dozen from parcels sent on approval. -Slide Cabinets, Air Pumps,
Electrical Apparatus, and numerous Educational Appliances for
Schools and Colleges at lowest possible prices.

Rev. H. MILLS, Greenside, Kendal.

METHYLATED SPIRIT

Special Quotations to large

Institutions.

BOORD & SON,

DISTILLERS SINCE 1750,
115=121 Tooley Street,

LONDON, S.E.

COLOUR PHOTOGRAPHY. SANGER-SHEPHERD QUICK CHANGE, ONE PLATE, LATEST PATTERN OUTFITS.

EXCELLENT Photographs in Colour are obtained with our smaller lens filter Outfits, complete from 25/-; but for general work, Landscapes in changing light, Portraiture or Photomicrography where rapid exposures in succession are necessary, the Repeating Back with Colour Filters is recommended as the best all round appliance.

It may be attached to any , for whole-plate camera or glass plate Kodak, by means of a panel cut to.correspond and interchangeable with The ordinary dark slide. This does not in any way interfere with the use of the camera for ordinary work. The three Colour Filters are held in a frame, clipped in front of the double dark slide which carries the two plates, each large enough to record the three negatives side by side, when ihe slide is pushed past the opening in the outer case. With this Outfit, even a beginner will secure three-colour negatives with the ease and certainty of an ordinary photograph.

Repeating Back Attachments, with Filters complete, from 90/-
Send for New Booklets, post free to readers of "Nature," or

call and see results obtained by amateurs. SANGER-SHEPHERD & CO., 5, 6, 7 Gray's Inn Passage, Red Lion Street, Holborn, London.

[graphic]
« PreviousContinue »