Page images
PDF
EPUB

1

1

RICHARD CLAY AND SONS, LIMITED,
BREAD STREET HILL. E.C., AND

BUNGAY, SUFFOLK.

[graphic]

A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE

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

No. 1827, VOL. 71) THURSDAY, NOVEMBER 3, 1904.
Registered as a Newspaper at the General Post Office.)

[PRICE 15 CENTS.

(All Rights are Reserved.

MORTON & WRIGHT'S RECTIFIER

(PATENT) For converting alternating into continuous current for

charging accumulators and working coils.

VERLAG VON CUSTAV FISCHER IN JENA. Praktikum für morphologische und systematische Botanik. Hilfsbuch bei praktischen

Uebungen und Anleitung zu selbständigen Studien in der Morphologie und Systematik der Pflanzenwelt. Von Prof. Dr. KÁRL SCHUMANN, weil. Kustos am Koniglichen Boianischen Museum und Privatdozent an der Universität zu Berlin, Mit 154 Figuren im Text. Preis: 13 Mark, geb. 14 Mark.

Soeben erschien Heft 2 der II. Reihe der : Vegetationsbilder. Von Dr. G. KARSTEN, Prof.

an der Universität Bonn, und Dr. H. SCHENCK, Prof. an der Technischen Hochschule Darmstadt. Preis des Heftes für Abnehmer der zweiten Reihe 2,50 Mk. Einzelne Hefte 4 Mark. Inhalt: G. Karsten, Die Mangrove-Yegetation.

Küstensaum Rhizophora mucronata. Tafel 8. Rhizophora mucronata, Einzelexemplar. Tafel 9. Bruguiera gymnorrhiza. Tafel 10. Avicennia officinalis. Tafel 11. Sonneratia acida. Tafel 12. Sonneratia alba.

[graphic][subsumed][subsumed]

Tafel 7:

von

[blocks in formation]
[blocks in formation]

38 HOLBORN VIADUCT, E.C. BRANCHES : 45 CORNHILL; 122 REGENT STREET.

(PATENT APPLIED FOR.)

John J. Griffin & Sons,

LTD., 20, 22, 24 & 26 Sardinia Street,

LONDON, W.C.

...

[ocr errors]

NORTHERN POLYTECHNIC

INSTITUTE,

HOLLOWAY, LONDON, N. (Close to Holloway Sun., G.N.R., and Highbury Stn., N.L.R.) LONDON UNIVERSITY SCIENCE AND ENGINEERING

DEGREES.
Day and Evening Courses in the above under recognised teachers in-
MATHEMATICS,

PHYSICS,
CHEMISTRY,

ENGINEERING. Separate Laboratories for Elementary, Advanced and Honours students, exceptionally large and well equipped.

RESEARCH. Accommodation and apparatus provided for research in either Pure or Applied Chemistry and Physics, and Engineering, in rooms specially adapted for this purpose, Full particulars at the Institute or sent on receipt of postcard.

REG. S. CLAY, D.Sc., Principal.

...

BEDFORD COLLEGE FOR WOMEN.

(UNIVERSITY OF LONDON.)

YORK PLACE, BAKER STREET, W. The HALF TERM begins on MONDAY, NOVEMBER 14. The College provides instruction for Students preparing for the Upiversity of London Degrees in Arts, Science, and Preliminary Medicine, also instruction in subjects of General Education.

There is a Training Department for Teachers, a Hygiene Department, and an Art School.

Students can reside in the Collega.
Particulars on application to the PRINCIPAL.

THE SIR JOHN CASS TECHNICAL

INSTITUTE,
JEWRY STREET, ALDGATE, E.C.
Principal

CHARLES A. Kohn, M.Sc., Ph.D., F.I.C. EVENING CLASSES in CHEMISTRY, METALLURGY, PHYSICS and MATHEMATICS designed to meet the requirements of those engaged in CHEMICAL, METALLURGICAL and ELECTRICAL INDUSTRIES and in trades associated therewith.

Also preparation for the B.Sc. Examination of London University. Chemistry

{

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

R. S. Willows, D.Sc., M.A. Metallurgy

C. O. BANNISTER, Assoc. R.S.M. Mathematics

G. M. K. LEGGETT, B.A. Every facility for special and advanced practical work in well-equipped laboratories both in the afternoon and evening.

NEW SESSION began MONDAY, SEPTEMBER 26. The Institute is readily accessible and near to Fenchurch Street, Liver. pool Street, Broad Street and Metropolitan Railway Stations.

For details of the Classes apply at the Office of the Institute, or by letter to the PRINCIPAL.

W. H. DAVISON, M.A., Clerk to the Governing Body. At the

the SOUTH-WESTERN POLYTECHNIC, Manresa Road, Chelsea, S.W., Day College Courses of thirty hours per week will be conducted in preparation for the London University Degrees of B.Sc. in Mechanical and Electrical Engineering, in Chemis. try, Physics and the Natural Sciences. The composition fee for the Session of three terms, 1904-1905, is £15. ,,These Courses are recog; nised for "Internal Students of the University, and consist of lecture and laboratory instruction, The Courses are conducted by :MECHANICAL ENGINEERING, W. W. F. Pullen and L. D. Coueslant; ELECTRICAL ENGINEERING, A. J. Makower; CHEMISTRY, J. B. Coleman, J. C. Crocker, and F. H. Lowe; MATHEMATICS and PHYSICS, S. Skinner, W. H. Eccles, J. Lister and L. Lownds: BOTANY, H. B. Lacey and T. G. Hill; GEO. LOGY, A. J. Maslen. In the evenings similar Courses will be con: ducted, but at reduced sees. Also TECHNICAL DAY COURSES of three years' duration have been arranged as a preparation for the Engineering, Electrical and Chemical and Metallurgical professions, The Laboratories and Workshop are open for RESEARCH under the direction of the Principal and the Heads of Departments.

Further particulars may be obtained on application to the SECRETARY, who will send either the Day College Prospectus and Calendar or the Evening Class Prospectus sor 316. The Prospectus may be had at the Office for id. UNIVERSITY OF GLASGOW,

ADDITIONAL EXAMINERSHIPS. The University Court of the University of Glasgow will shortly proceed to appoint the following Additional Examiners :(a) For Degrees in Arts and Science--ONE EXAMINER in MATHE

MATICS. Annual salary, 670. (6) For Degrees in Arts, Science and Medicine-ONE EXAMINER

in NATURAL PHILOSOPHY (including Practical Physics). Annual salary, 670. Candidates should be qualified both on the

Mathematical and Experimental side. ONE EXAMINER in CHEMISTRY. Annual salary, £50. The appointments will be for three or four years from January 1, 1905, ani in addition to the above mentioned salaries, hotel and travelling expenses will be paid.

Candidates should lodge twenty copies of their application and testimonials with the undersigned on or before November 12, 1904.

ALAN E. CLAPPERTON,

Secretary, Glasgow University Court. 91 West Regent Street, Glasgow. SWINEY LECTURES ON GEOLOGY. UNDER THE DIRECTION OF THE TRUSTEES OF THE

BRITISH MUSEUM. A Course of Twelve Lectures on “GEOLOGY-THE RECORD AND ITS INTERPRETATION" will be delivered by John S. FLETT, M.,1., D.Sc., F.R.S.E., in the Lecture Theatre of the Victoria and Albert Museum, South Kensington (by permission of the Board of Education), on Mondays, Wednesdays, and Fridays, at 5 p.m., beginning Monday, November 7, and ending Friday, Deceinber 2. Each Lecture will be illus trated by means of Lantern Slides and Lime-light. Admission to the Course free. Entrance from Exhibition Road.

By order of the Trustees,

E. RAY LANKESTER, Director. British Museum (Natural History),

Cromwell Road, London, S.W. UNIVERSITY COLLEGE, LONDON.

(UNIVERSITY OF LONDON.) A Course of Eight Lectures on "Current Theories of the Hereditary Process will be given at Five o'clock on the following Tuesdays :November 22 and 29, December 6 and 13, January 24 and 31, February and 14, by W. F R. WELDON, M.A., D.Sc., F.R.S., Linacre Professor of Comparative Anatomy in the University of Oxford.

Syllabuses and Cards of Admission may be obtained gratis by members of the University and of Schools of the University, and on payment of tas. 6d. by others.

WALTER W. SETON, M.A., Acting Secretary.

BEDFORD COLLEGE FOR WOMEN.

(UNIVERSITY OF LONDON.)

YORK PLACE, BAKER STREET, W. DEPARTMENT FOR PROFESSIONAL TRAINING IN

TEACHING. HEAD OF THE DEPARTMENT: Miss H. ROBERTSON, B.A. Students are admitted to the Training Course in October and January.

The Course includes full preparation for the Examinations for the Teaching Diplomas granted by the Universities of London and Cambridge, held annually in December. A Course of Lectures on Schcol Hygiene is held on Saturday mornings Full particulars on application to Miss ROBERTSON. BEDFORD COLLEGE FOR WOMEN.

(UNIVERSITY OF LONDON.)

YORK PLACE, BAKER STREET, W. The Council are about to appoint a Lady as HEAD of the TRAINING DEPARTMENT.

Applications must be sent by November 25 to the SECRETARY of the College, from whom further information may be obtained.

H. WALTON, Secretary.

COACHING (THEORY, AND

(

PRACTICE) In BIOLOGY, BOTANY, CHEMISTRY and PHYSIOLOGY for MEDICAL EXAMS.

Especial Course of Instruction in THERAPEUTICS, PHARMACOLOGY and MICROSCOPY for INSTITUTE OF CHEMISTRY EXAM.

Mr. FREDERICK DAVIS, The Laboratories, (Registered in Column B (Advanced Education). Teachers Registration

Council, Board of Education, S.W.), 49 and 51 IMPERIAL BUILDINGS, LUDGATE CIRCUS, E.C. TO SCIENCE AND MATHEMATICAL

MASTERS.- January (1903) Vacancies.-Graduates and other well qualified Masters seeking posts in Public and other Schouls for next term should apply at once, giving full details as to qualifications, &c., to Messrs. GRIFFITHS, Smith, POWELL & SMITH, Tutorial Agents (Estd. 1833), 34 Bedford Street, Strand, London. Immediate notice of all the best vacancies will be sent.

Wanted for Protestant Irish School after

the Christmas holidays, a Master to teach Modern Languages and Auxiliary Subjects. An Englishman who has resided abroad preferred. Salary, 6150 per annum ; non-resident. Also a Science Master with Certificates for the reaching of Drawing. Salary, 6150 per annum; non-resident. Applications, with copies of Testimonials and Photos if

possible, to be sent to HEAD MASTER, Office of this paper. SCIENCE & MATHL. APPTS.-(1) Public

Scb., Nat. Sc. and Drawg., £150 + fees; valuable post to good man. (2) Chem. and Physics-little English. Games preferred. 120, res. (3) Chem. + Magnetism and Electricity. £100, res. Many January Appis. Messrs. NEEDES & SELLICKS, Scholastic dzenis, Clock House, Arundel Street, Strand.

BROWNING'S ASTRONOMICAL TELESCOPES

...

islas

[ocr errors]

“UNIVERSITYTELESCOPE (as figured), with 3 in.

O.G., 3 eyepieces, star finder, vertical sieadying rod, and fixing on claw stand

in case £10 10 Do. do. with 33 in. 0.G.

£15 15 “LUNAR” TELESCOPE, with (Case 15/-1 3 in. 0.G. and 2 eyepieces i extra

£5 10 0 “COLLEGE” TELESCOPE, with 3 in.

selected 0.G., 3 eyepieces on claw stand, in case £6 10 0 “ STUDENT'S' TELESCOPE

£5 5 4 in. Brass Body ALT-AZIMUTH TELESCOPE

£30 0 0 EQUATORIAL TELESCOPE, 3 in.

0.G., best Equatorial mounting, on
strong oak stand

£25 0 0 PRICE LISTS POST FREE.

[ocr errors]
[blocks in formation]

WOOLWICH POLYTECHNIC.

Principal ... William GANNON, M.A.
The Governors invite applications for the following appointments :-

(1) TEACHER of MATHEMATICS and EXPERIMENTAL PHYSICS. Commencing salary. 6160 per annum. Experience of secondary school work essential.

(2) TEACHER of MATHEMATICS and EXPERIMENTAL PHYSICS. Commencing salary, 6150 per annum. Experience of tech. nical school work essential

Forther particulars and application forms may be obtained from the PRINCIPAL on receipt of a stamped addressed foolscap envelope. Last day for receiving applications is November 7.

A. J. NAYLOR, Clerk to the Governors. UNIVERSITY COLLEGE OF NORTH

WALES, BANGOR. (CONSTITUENT COLLEGE OF THE UNIVERSITY OF WALES.)

AGRICULTURAL DEPARTMENT. AD ASSISTANT LECTURER in AGRICULTURE will shortly be appointed Applications should be sent in not later than November 7. For further particulars apply to

JOHN EDWARD LLOYD, M.A., October 12, 1904

Secretary and Registrar. BRUNTS' TECHNICAL SCHOOL,

MANSFIELD. A FIRST ASSISTANT MISTRESS is required in the above Secondary Mixed School, to commence duties after the Christmas Holidays. Subjects essential. General Biology and English. Capacity to teach Physical Exercise will be a recommendation. Salary: £100 per annum, advancing to £150.

Further particulars and forms of application may be obtained from the undersigned.

W. N. SARLL. Bald Lane, Mansfield. BRUNT'S TECHNICAL SCHOOL,

MANSFIELD. An ASSISTANT MASTER is required to teach Woodwork and Lower Form Subjects. Salary, £95 per annum Apply, stating age, qualifications and experience, with names of three references, to

C. E. STACEY, B.A., B.Sc., Head Master. THE VERDIN TECHNICAL SCHOOL.

SECONDARY DAY SCHOOL. The Winsford Higher Education Committee invite applications for the post of ASSISTANT MASTER in the above Secondary Day School, at a comencing salary of 6 120 per annum. Special qualification, Chemistry ; brut applicants must be able to give instruction in English subjects (or other Irailable subjects of the School Curriculum). The Master appointed will further be required to teach Chemistry on two evenings per week during the winter months in the Evening Technical School, and will be expected

take part in the School Games (Hockey and Cricket). Applications, endorsed "Assistant Master," stating age, accompanied ty copies of not more than three testimonials, should be delivered to the HEADMASTER, Verdin Technical Schools, Winsford, Cheshire, not later tan Monday, November 14.

JNO. H. COOKE, Winsford, Chesbire,

Clerk to the Committee. November 1. 1904. OLDBURY SECONDARY SCHOOL AND

PUPIL TEACHERS' CENTRE. The Governors require, after Christmas, an ASSISTANT MASTER to teach ordinary Form Subjects and Science or Mathematics. Salary, Liso per annum.

Farther particulars may be obtained from the Secretary, to whom applications should be forwarded on or before November 26, 1904.

H. A. ANDERSON, Secretary. Technical Schools, Oldbury. SMETHWICK PUPIL TEACHERS'

CENTRE,

NEAR BIRMINGHAM. An ASSISTANT MASTER is required who shall have special qualifi. cations in Science. Salary, 6130, rising to £150. Applications, with testimonials, &c., to be sent in not later than November 7 to

J. N. BIRCH, B.A., Principal. CITY OF BIRMINGHAM.

MUNICIPAL TECHNICAL SCHOOL. The services of a LECTURER in ELECTRICITY and PHYSICS are required in January next. The commencing salary offered is £140. The last date for sending in applications is November 19 next. Full particulars of the post will be forwarded on application to

GEO. MELLOR, Secretary. Offices of the School, Suffolk Street October 17, 1904.

OWEN'S SCHOOL, ISLINGTON. WANTED in January, PHYSICS MASTER and CHEMISTRY MASTER. Must have had experience in good laboratories, and be able w lecture and illustrate by experiments in an efficient manner. There are to Science Masters on each side. Cominencing salary, £150. Apply at om giving age, qualification, experience, and copies of three recent testimonials, to the Head MASTER.

SANGER - SHEPHERD NEW PATTERN AUTOMATIC ARC-LAMP

FOR

LABORATORY WORK. 125 Candle Power.

A low power Lamp, invaluable as

white light illuminant for

Microscopic,

Spectroscopic, and Photographic Work. SPECIFICATION. - Automatic Arc Lamp in nickel-plated ventilated cover, suspended on adjustable stand with self-contained resistance, fine centreing adjustment by screwed nut suspension. As open or closed arc, requires only if amperes on 100/110 volt direct current circuit. Complete with flexible cord and plug, for instant attachment to

ordinary bayonet lamp socket. Burns 20 hours without attention.

With Stand (as shown), £4 : 10 : 0

Lamp only, £2 : 15 : 0 Also supplied for 200

volts.

[blocks in formation]

REYNOLDS & BRANSON, LTD.,

THE NEW AITCHISON PATENT PRISM BINOCULAR. MANY IMPROVEMENTS: LARGE OBJECT GLASSES.

VARIABLE DIAPHRAGMS, &c.

Scientific Instrument Makers to the Indian Government and Science and Art Department. LABORATORY FURNISHERS AND

MANUFACTURING CHEMISTS.

[graphic]
[ocr errors]

MADE IN

LONDON.

[ocr errors]

NEW PHOTOGRAPHIC DARK ROOM LAMP
Lieut. W. R. LEDCARD, R.N., ATGA
H.M.S. THETIS,

THE « RYSTOS”
China Station,

ELECTRIC LAMP writes, May 10, 1904:-

(No. 1) " To

For Standing or Hanging, with Cord and “Messrs Aitchison & Co.,

Plug to fit ordinary lamp socket, and "London.

Reversing Switch. The insulated switch "I received the Prism

handle on top will be found safe and well Binoculars (Aitchison No.

adapted for turning on the current to 12), and am very pleased

either ruby or white light, or instantly with them, and find them

exchanging the one for the other. The very efficient for both day

white light is convenient when making and night work."

bromide prints, transparencies, &c. The
ruby glass provided is of special quality,
being spectroscopically tested. It gives
a soft diffused light, while its semicircular
shape secures the illumination of the
whole developing table.

Dimensions, 4 in. x 8in.
PRICES (the

HEYNOLDS & BRANSON LE
umbers give Magnifying Power)-

Price £l ls. No. 6, £5. No. 8, £5 10s. No. 10, £6. No. 12, £6 10s.

(When ordering, please mention voltage.) ILLUSTRATED PRICE LIST AND PARTICULARS POST FREE. Why buy foreign prism glasses when the Aitchison

LAMPS FOR GAS ALSO WITH BYE-PASS. is best and cheapest. MADE IN LONDON. AITCHISON & CO., H.MP TOVERNMENT,

OPTICIANS

New Photographic Requisite List on application.
428 STRAND, and Branches, LONDON. 14 COMMERCIAL STREET, LEEDS.
MR. EDWARD ARNOLD'S NEW BOOKS.
THE CHEMICAL SYNTHESIS
OF VITAL PRODUCTS

AND THE
INTER-RELATIONS BETWEEN ORGANIC COMPOUNDS

IN this SOCIETY are combined the ADVANTAGES of
By R. MELDOLA, F.R.S., Y.P.C.S., F.I.C., &c.,

Mutual Assurance with Moderate Premiums. Professor of Chemistry in the City and Guilds of London Technical College, Finsbury.

The Premiums are so moderate that at most ages an

Assurance of £1,200 or £1,250 may generally be secured. Super Royal 8vo.

from the first for the same yearly payment which would elsewhere THE BECQUEREL RAYS

assure (with profits) £1,000 only.

The Whole Surplus goes to the Policyholders on AND THE PROPERTIES OF RADIUM.

a system at once safe and equitable, no share being given to those by By the Hon. R. J. STRUTT,

whose early death there is a loss.
Fellow of Trinity College, Cambridge.

Surplus at last Investigation, £1,581,000.-
Demy Svo.
With Diagrams. 8s. 6d. net.

Over 60 per cent. of the Members who died during
AN INTRODUCTION TO

last Septennium were entitled to Bonuses which, notTHE THEORY OF OPTICS.

withstanding that the Premiums

do not as a rule exceed the non. By ARTHUR SCHUSTER, Ph.D., Sc.D., F.R.S., profit rates of other Omroes, were, on the Professor of Physics at the University of Manchester.

average, equal to an addition of over 50 per Demy 8vo. With numerous Diagrams. 155. net.

cent. to the Original Assurances. ENGLISH ESTATE FORESTRY. ENDOWMENT ASSURANCE-WITH BONUS

By A. C. FORBES,
Lecturer on Forestry, Durham College of Science.

-SPECIAL CLASS.
Demy 8vo. With illustrations. 12s. 6d. net. PROSPECTUSES, with full information, may be had on application.
THE ELECTRIC FURNACE. Accumulated Funds exceed £13,000,000.

By HENRI MOISSAN,
Professor of Chemistry at the Sorbonne.

HEAD OFFICE: 6 ST. ANDREW SQUARE, EDINBURGH, Translated by A. T. de MOUILPIED, M.Sc., Ph.D. LONDON OFFICE: 17 KING WILLIAM STREET, E.C. Demy 8vo. With numerous Illustrations. ros. 6d. net.

West END BRANCH: 17 PALL MALL, S.W. London : EDWARD ARNOLD, 41 & 43 Maddox Street, w.

[graphic]

SCOTTISH PROVIDENT

INSTITUTION.

2IS.

net.

.

« PreviousContinue »