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EAST LONDON TECHNICAL
New Term Commences JANUARY 9, 1905.
SJ. L. S. HATTON, M.A., and
W. F. S. CHURCHILL, M.A. Chemistry
J. T. Hewitt, D.Sc., and
1 C. SMITH, D.Sc. Mechanical Engineering...
D. A. Low, M.I.M.E., and J. A.
DAVENPORT, B.Sc., Vict. Electrical Engineering
J. T. MORRIS, A.MI.E.E. Physics
JR. A. LEHFELDT, D.Sc., and
W. H. WHITE, B.A., B.Sc. Botany
V. H. BLACKMAN, M.A. The DAY CLASSES for students over 16 years of age include full three years' technical courses in Chemistry and Engineering, and three years' courses for London University Degrees (Pass and Honours).
EVENING CLASSES are held in Advanced Technical and Scientific subjects, and for London University Degrees.
SCHOLARSHIPS of the value of £40 per annum will be awarded by the
J. L. S. HATTON, Director Studies.
FACULTY OF SCIENCE.
J. E. MACKENZIE, Ph.D., D.Sc Chemistry
H. WREN, Ph.D., B.A., B.Sc.
ALBERT GRIFFITHS, D.Sc. Physics ...
D. OWEN, B.A., B.Sc.
B. W. Clack, B.Sc. Mathematics
E. H. SMART, M.A.
(W.G. BIRT, B.A., B.Sc. Botany
(A. B. RENDLE, M.A., D.Sc.
(F. E. FRITSCH, Ph.D., B.Sc. Zoology ...
H. W. UNTHANK, B.A., B.Sc. Goology & Mineralogy Geo. F. HARRIS, F.G.S. Assaying, Metallurgy & Mining. Geo. PATCHIN, A.R.S.M
RESEARCH in Chemistry and Physics in well-equipped laboratories. French, German, Spanish, Russian, Dutch, & Italian Classes.
EVENING CLASSES also in Biology, Physiology, Practical Geometry, Building and Machine Construction, Steam, Theoretical and Applied 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. 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 there with.
Special Courses during the Lent Term :-
CHARLES A. Kohn, M.Sc., Ph.D., F.I.C. METALLOGRAPHY C. O. BANNISTER, Assoc. R.S.M.
Full curriculum for B.Sc. Examination of London University in Experimental Science under recognised Teachers of the University.
GLASS Blowing. Two Courses of Instruction will be given during the Term by Mr. A. C. Cossor.
NEW TERM begins MONDAY, JANUARY 9, 1905. 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.
HIGHER MATHEMATICS FOR SCIENCE AND OTHER STUDENTS. Correspondence Tuition by highly qualified graduates of
, and Royal Universities, in Algebra, Trigonometry, Theoretical Mechanics, Difles ental and Integral Calculus, Pure Geometry, Geometrical Drawing, &c.
Departments are at work preparing for London and Royal University Examinations, Science and Art. Civil Service Examinations, and all Prof Preliminaries. ---Apply to Mr. J. CHARLESTON, B.A., Burlington Cortepondence College, 8 Crescent Grove, Clapham, S.W.
ESSEX EDUCATION COMMITTEE.
ASSISTANT CHEMISTRY INSTRUCTOR. The Essex Education Committee require immediately the services of an ASSISTANT INSTRUCTOR of CHEMISTRY and PHYSICS at the County Laboratories. The person appointed must have had a sound Mathematical and Scientific Training at a University or institution of University standing, and some teaching experience. Salary, 6150 per annum.
Applications, stating age, qualifications and experience, to be sent, with copies of two recent testimonials, on or before Thursday, January 26, to
J. H. NICHOLAS, Secretary. County Offices, Chelmsford.
January 10, 1905. SCIENCE AND MATHEMATICAL
MASTERSHIPS VACANT. Science Master required for well-known Catholic School, Salary 6150. Ditto for Army Pupils, 6200 Fifty
Science Men required for Grammar, Preparatory and Secondary Schools. List sent to all Candidates. No preliminary charges. ORELLANA & CO.,
Established over 40 years, 80 Wigmore Street, Cavendish Square, London, W.
(lale 44 Old Bond Street).
Books. Second-hand for Sale, cheap.
“Grays' Molluscous Animals.”. 5 Vols., 1857, mostly Plates. "Sachs Text Book of Morphological and Physiulogical Botany." “ Kirby's Butterflies and Moths." 5 Vols., many Coloured Plates Many others. List sent. Low Cash Value, or exchange Architectera' or Technological Works. Address, JENNINGS, 62 Barry Ruad,
Dulwich, S.E. Inter. B.Sc. Hons. (Lond.), Medallist
Machine Design, Tech. Coll. training ; factory experience and super vision of men, desires permanent appointment as ASSISTANT MANAGER or other responsible post. Speciality : Instruments on
precision. Energetic. Low Salary.—1837, c/o NATURE. A Cambridge Man engaged in Research, with
highest attainments in Mathematics, Physics and Chemistry, desires tu act as a SCIENTIFIC ADVISER to manufacturing or other concert
to which his training and experience may be of use.—1837, cio NATTE Aeronautics.-Gentleman experienced in all
kinds of Aeronautical Construction, Aeroplanes, Propellers, Airstaps &c., wishes to join another in Aeronautical experimenting. "God,
Messrs. DEACONS, Leadenhall Street, E.C. For Sale.- Volumes of “ Nature," roughly
bound, from November, 1869. to January, 1995. Apply to Lieut-Cl
C. R. Woods, R.A.M.C., Royal Infirmary, Dublin. TYPE-WRITING UNDERTAKEN BY
HIGHLY EDUCATED WOMEN ACCUSTOMED TO SCIENTIFIC MSS. (Classical Tripos, Intermediate Arts, Cambridge Higher Local, thorough acquaintance with Modern Languages). Research, Revision, Translation. Scale of charges on application. The Can bridge Type-writing Agency, 10 Duke Street, Aldephi, W C.
COUNTY SCHOOL, GRAVESEND. Wanted immediately, a SENIOR SCIENCE MASTER to teach Chemistry up to Honours Standard (B.E.) in Secondary Day School and Evening Science Classes. An experienced teacher and good disciplinarian essential. Commencing Salary £150, with some 625-63c for Evening Work. Apply, giving age, qualifications, experience, and copies of three testimonials, by January 30 to HEAD MASTER. The Advertiser would be glad to purchase
in Parts, a few weeks after dates of issue, (1) " The Philosophical Magazine"; (2) "Science Abstracts." Also within six months of publication, bound or unbound volumes of " The Philosophical Transactions of the Royal Society." Please apply, stating prices asked, to
"S.," NATURE Office. For Sale, “ Journal of the Chemical Society,"
10 years from 1894. Complete with indices.-G. S. NEUTH, Godstone, Surrey.
Including Radiography, High Frequency, Hydro-Electric and Light Baths, Finsen and other Light, Cautery, Electrolysis, &c.
INDUCTION COILS AND STATIC MACHINES A SPECIALITY. CONTRACTOR TO THE WAR OFFICE, INDIA OFFICE, AND ADMIRALTT.
BRITISH AND FOREIGN HOSPITALS, &c.
LISTS ON APPLICATION. 82 HATTON GARDEN, LONDON.
A SANGER-SHEPHERD Light Filter gives th: Maximum of Orthochromatic effect with the Minimum of Exposure.
To obtain Pictures true to nature with correct values of Light and Shade, Shadow Details and Cloud Effects, use a Sanger-Shepherd Light Filter. All sizes stocked-Circular and Square. Fittings and Cases
of many Patterns to suit all Cameras.
SETS OFLIGHT FILTERS
in Special Case, morocco-covered, velvet-lined, for pocket. X 5 times. For Cloud Effects and Snapshots ...
from 76 X 10 times and Gilvus. For Landscapes and Portraiture ...
... from 10 Absolutus. For correctly copying all coloured objects ... ...
... from 10 Ir Send for New Booklets, post free to readers of " Nature," or call and
see results obtained by Amateurs. SANGER-SHEPHERD & CO.
FACTORY AND OFFICE : 5, 6, 7 GRAY'S INN PASSAGE, RED LION STREET, HOLBORN, W.C.
FOR SALE, at Reduced Prices.
MICROSCOPIC SLIDES (dispersal of Mr. Hornell's collection), see Micro. Editor's note, June No. of Knowledge, Sections of Flower Buds, &c., also Marine, suitable for Students and Exhibition, new, prices from 3d. each.
MICROSCOPE, Baker's D.P.H. and fittings, 67 16s. ; Beck's London and fittings, £6 6s.; many others, Pillisher, Ross, &c. Several Objectives. Bull's-Eye Condensers. Abbe Condensers. Eyepieces by Leitz, &c. Goer z PRISMATIC BINOCULARS. Photographic Lenses. SURGEON'S OPERATION Outfit, very fine, new, for sale, cheap.
Collection of Shells. Many other useful articles. Send for lists. Mr. HERBERT CLARKE, 104 LEADENHALL STREET, LONDON.
MARBLE REDUCEO TO QUICKLIME IN
with our NEW BLAST WARNING.
We make these in two sizes ar Burner, Body of
present, " and ", and the prices Furnace, and
are-Burners only, 1/6 and 26; Hood are all dis.
complete with Furnace, 4/6 and tinctly stamped
6/in the metal
The consumption of gas is the " BREWSTER,
same as with an ordinary Bunsen, SMITH & Co.,
but the heat derived is three LONDON."
times as great, and a number of Beware of imita
interesting experiments can be tions that do not
performed with them, wbich contain the essen
have only been possible before tial feature of this
with very expensive furnaces. burner's success.
We are the SOLE MAKERS. NATURE says :-“The combination of furnace and burner is very convenient. These little furnaces are not only useful for reducing calcium carbonate to lime, but also work very well in fusion experiments." BREWSTER, SMITH & CO., 6 CROSS ST., FINSBURY PAVEMENT, LONDON. Makers and Importers of every description of Scientific
Apparatus and Chemicals.
Gratis to Colleges and Laboratories.
(Monocular and Binocular.) By Swift, Watson, Beck, Crouch, Collins, Zeiss, Leitz, &c.
(Refractor and Reflector.). VARIOUS Sizes. By Cooke, Grubb, Alvan Clark, Wray, Calver, Browning, Steward, Newton, Watson, Dollond, Negretti, Banks,
LISTS ON APPLICATION.
Best Make and Finish.
Obtained through any Optician. ROBERT NICHOLL, 153 HIGH HOLBORN, LONDON.
THE IRISH NATURALIST.
Geology. Price 6d.
(to which Address Subscriptions should be sent). London : SIMPKIN, MARSHALL, HAMILTON, KENT, & CO., Ltd
READING MICROSCOPES, RESISTANCE COILS, &c. 56 CHARING CROSS ROAD, LONDON, W.C.
1 SPECIAL TERMS TO COLLEGES, SCHOOLS, INSTITUTES, &c. Dj
RADIUM "CLOCKS.") RADIUM.
(BROM. PUR.) FROM STOCK
ON HIRE, in 1, 2}, & 5 m.g.
Having made a special study of these instru-
1. FOR THE . ,
SLIDE USE . .
lend them on hire.
Pitchblende, from 2/- to 30/- per piece; in Powder, 2/6 per cz.
Aeschynit, 2/- per oz. Emanium, 30/- per decigramme.
page 185.) Radio-active Mud, 1/6 per bottle.
Monazit Sand, 1/- per oz.
gramme. Screens, 9d. per square inch.
screens, 6d. per square inch. Electroscopes (special), 21/Spinthariscopes (special), 21/-, 10/6 and 7/6. Selection of Minerals in boxes, 2/6, 5/6, 10/6 and 21/-. New Zealand Vegetable Caterpillar, with a stem showing fructification growing out of its head, 10/6 to 21/- each.
Dr See NATURE, May 12, 1904. CALCIUM METAL,
1/6 per oz.
All Post Free within U.K.
We make a special feature of CHEMICALS and APPARATUS of all kinds.
PRICE LIST FREE.
Telephone: 1797, PADDINGTON.
W. MARTINDALE, 10 NEW CAVENDISH ST., LONDON, W.
ARMBRECHT, NELSON & CO.,
71 & 73 DUKE ST., CROSVENOR SQUARE, W. W. G. PYE & CO., “GRANTA” WORKS,
IMPORTANT.-Note also how close the terminals for the unknown value are together, and that a double
successive key is used instead of two single ones.
FURTHER PARTICULARS UPON APPLICATION. Exceptional value in all kinds of resistance boxes for high-class work, also for educational purposes.
With interchangeable coils, each contained in a dust-tight case.
FIGURE OF MERIT. 10 MILLIMETRES per MICROVOLT
at a scale distance of
1 metre with 25 ohm suspended coil. Price, without tangent-head
(Including 26 ohm coil unless otherwise ordered.) Spare coils (5 ohms or 200 ohms) mounted as shown to right of figure ...
... each 3
THE CAMBRIDGE SCIENTIFIC INSTRUMENT COMPANY, LTD.