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THE NEW COLLECTION OF
WATKINS & DONCASTER,
· 336 SPECIMENS AND SLIDES OF ROCKS,
Naturalists and Manufacturers of CABINETS AND APPARATUS
according to H. ROSENBUSCH: “Elemente der FOR ENTOMOLOGY, BIRDS' EGGS AND SKINS, AND ALL
Gesteinslehre, 2d ed. 1901.”
Accompanied by a text-book : “Practical Petrography," giving a short
description of the polarizing microscope and its application, and also of the N.B-For Excellence and Superiority of Cabinets and Apparatus, refer macroscopical and microscopical features of every specimen of this collec. ences are permitted to distinguished patrons, Museums, Colleges, &c.
tion, by Professor Dr. K. Busz of the University uf Münster. This
collection is intended for the practical use of students, and contains typical A LARGE STOCK OF INSECTS, BIRDS' EGGS AND SKINS.
representatives of all important types of rocks; it is composed of 277 SPECIALITY.-Objects for Nature Study, Drawing
massive rocks (94 deep-seated rocks, 50 dike rocks, 133 volcanic rocks), Classes, &c.
28 sedimentary, and 31 crystalline schists. Out of it two smaller collections Birds, Mammals, &c., Preserved and Mounted by First-class
of 250 and 165 specimens have been selected. The prices are as follows :Workmen true to Nature.
Collection 1. 336 Specimens of Rocks ... 380 Marks. All Books and Publications on Natural History supplied.
la. 336 Slides ...
420 36 STRAND, LONDON, W.C.
II. 250 Specimens of Rocks ... 270
III. 165 Specimens of Rocks ... 170 IG Yere Catalogue (102 pp.) just issued, post free.
Illa. 165 Slides ... ... ... ALBERT EDWARD JAMRACH
cu COLLECTIONS OF MINERALS, FOSSILS, METEORITES, (Late CHARLES JAMRACH),
PURCHASED FOR CASH OR EXCHANCED.
! The fifth edition of Catalogue No. 4, Petrography, has just 180 ST. GEORGE STREET EAST.
been published (210 pages), and will be sent free of charge on
Dr. F. KRANTZ,
JAMES R. GREGORY & Co., i Kelso Place, Kensington Court, London, W.,
for a Prospectus of THE TWENTIETH CENTURY ATLAS OF
By E. L. N. ARMBRECHT. MICROSCOPICAL PETROGRAPHY,
Symbols, Atomic Weight, Discoverer, Isolater, Specific Gravity, Principal
Source, Melting Point, Properties, Salts of, Price, &c. now being issued in Twelve Monthly Parts, each Part containing Four Fine Half-Tone Plates, and also Four actual Rock Sections.
ARMBRECHT, NELSON & CO., Subscription in advance, either Monthly, 71-; Quarterly, 21/- ;
71 & 73 Duke Street, Grosvenor Square, W. or for the whole Series of 12 Monthly Parts & 48 Sections, 44 4s. N.B.-Sent Free on application.
TABLE OF RARE ELEMENTS.
LIVING SPECIMENS FOR
Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actinosphærium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, Melicerta, and many ocher specimens of Pond' Life. Price is. per Tube, Post Free. Helix pomatia, Astacus, Ampbioxus, Rana, Anodon, &c., for Dissection purposes.
THOMAS BOLTON, 25 BALSALL HEATH ROAD, BIRMINGHAM.
MINERALS, ROCKS, FOSSILS.
RICHARDS' SHOW ROOMS,
MARINE BIOLOGICAL ASSOCIATION
OF THE UNITED KINGDOM.
THE LABORATORY, PLYMOUTH
Sycon ; Clava, Obelia, Sertularia ; Actinia, Tealia, Caryophyllia, Alcy.
ROCKS, MINERALS, FOSSILS. For Collectors, Students, Technical Schools, Colleges, &c.
COLLECTIONS IN POLISHED DEAL BOXES. 25 Specimens, 5/6; 50 do., 10/6; 100 do., 21/-; 200 do., 42/
20 Coal Measure Rocks and Fossils, 12/6 ; do., larger, 15/-. Adapted for the Board of Education Examinations in
Geology, Physiography, and Mineralogy.
selection. Specimens sent on approval.
Boxes, Models of Crystals, &c., &c.
NEW CATALOGUE POST FREE. THOMAS D. RUSSELL, 78 Newgate St., London, E.C.
NOTICE.-Advertisements and business letters for Nature should be addressed to the Publishers; Editorial
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C. E. MÜLLER, ORME & CO.,
CHEMISTRY, PHYSICS, MECHANICS,
HYDROSTATICS, &c. DEALERS IN PURE AND COMMERCIAL CHEMICALS. STUDENTS' SETS OF APPARATUS.
LISTS:-Chemical Apparatus-Chemicals-Balances-Assay-Thermometers-Electrical Apparatus-Focus Tubes, X-Ray, and Wireless Telegraphy Apparatus-or SPECIAL WHOLESALE (for Quantities)-free on application.
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AND Co., LIMITED, at St. Martin's Street, London, W.C., and THE MACMILLAN COMPANY, co Fifth Avenue, New York.-THURSDAY, June 1, 1905.
A WEEKLY ILLUSTRATED JOURNAL OF SCIENCE
" To the solid ground
THURSDAY, JUNE 8, 1905. [PRICE 30 CENTS. Registered as a Newspaper at the General Post Office.)
(All Rights are Reserved.
NEW ILLUSTRATED AND
Free by Post.
The Watch Size Aneroid for foretelling weather and measuring heights.
Double Nose-piece, 9/- extra.
R. & J. BECK, Ltd.,
68 CORNHILL, LONDON.
COUNTY OF LONDON.
SUMMER COURSES OF LECTURES.
FACULTY OF SCIENCE. at the L.C.C. Paddington Technical Institute, Saltram Crescent (near
DAY AND EVENING COURSES. Westbourne Park Station), provided a sufficient number of students be enrolled :
J. E. MACKENZIE, Ph.D., D.Sc.
*** TH. WREN, Ph.D., B.A., B.Sc. Practical Workshop.
(ALBERT GRIYPITHS, D.Sc. The work of some great British Physicists,
Physics ... ..
D. OWEN, B.A., B.Sc.
B. W. CLACK, B.Sc.
(E. H. SMART, M.A.
*** W. G. BIRT, B.A., B.Sc. House Sanitation.
A. B. RENDLE, M.A., D.Sc. Land Surveying.
Botany ... ... ... . (F. E, FRITSCH, Ph.D., B.Sc. Experimental Mechanics for Building Trades.
H. W. UNTHANK, B.A., B.Sc.
Qeology & Mineralogy ... GEO. F. HARRIS, F.G.S.
Assaying, Metallurgy & Mining. Geo. PATCHIN, A.R.S.M.
French, German, Spanish, Russlan, Dutch, & Itallan Classes. Full particulars as to the length of the courses, evenings and time of meeting of the classes, may be obtained on application to the SECRETARY EVENING CLASSES also in Biology, Physiology, Practical Geometry, of the Institute.
Building and Machine Construction, Steam, Tbeoretical and Applied
Mechanics, Land and Quantity Surveying, and Estimating.
Calendar 6d. (post free 8d.), on application to the SECRETARY.
FACULTY OF SCIENCE. The Metropolitan Water Board are about to appoint on their permanent staff a Chief Officer who will be styled DIRECTOR OF WATER
RESEARCH SCHOLARSHIPS. EXAMINATIONS, and whose duties will be to advise the Board as to
Each of the value of about £96. the buildings, equipment and staff to be provided (under section 25 of the
| (Founded by the late T. Aubrey Bowen, Esq., of Melbourne, Australia. Metropolis Water Act, 1902), and subsequently to take charge and super.
(a) Two BOWEN SCHOLARSHIPS in ENGINEERING. vision thereof. The Director will also be required to give his whole time to the work, and to superintend and be responsible to the Board for all examin.
(6) One BOWEN SCHOLARSHIP in METALLURGY. ations, analyses, experiments and reports, and to undertake such research (c) Three PRIESTLEY SCHOLARSHIPS in CHEMISTRY. work and chemical analyses and bacteriological investigations, whether of
| The object of these Scholarships is to encourage higher work and research water or otherwise, as may from time to time be required of him by the
in Scientific Professional Engineering and in Chemical and Metallurgical Board. The appointment will be held during the pleasure of the Board,
Science. Applications, supported by details of educational training, and and the salary will be 1000 per annum.
references to former teachers and others, should be sent to the REGISTRAR Applications for the appointment must be made in writing, and must state
on or before June 19, 1995. The Scholarships will be tenable during the the age, qualifications, experience and present occupation of the applicants.
Session 1905-6. Official forms of application may be obtained from the undersigned, and Further particulars may be obtained on application to the REGISTRAR. should be used if practicable. Applications must be enclosed in sealed envelopes endorsed “Director"
UNIVERSITY OF CAMBRIDGE. and addressed to the undersigned; the last day for receiving them is Tuesday, July 11, 1905.
LONG VACATION COURSE, 1905. Canvassing members of the Board will be strictly prohibited and will be regarded as a disqualification.
PATHOLOGY, PUBLIC HEALTH AND PHARMACOLOGY. A. B. PILLING,
This year the work of the Long Vacation Course will be divided into Savoy Court, Strand, W.C.,
Clerk of the Board. three sections: (1) (for D.P.H. Students) commencing on Monday. May 31, 1905.
June 26, and (2) (lor Junior Students of Medicine) and (3) (for Advanced
Any further information may be obtained from Mr. E. E. STUBBINGS,
Pathological Laboratory, Medical School, Cambridge. GEOGRAPHICAL SOCIETY. Cambridge, May 19, 1905.
B.A. AND B.Sc. EXAMS.
The SECRETARYSHIP of this Society will be Vacant on August 31. Salary, £200 per annum. The gentleman holding the office would require to be willing to give his whole time to its duties. Written applications, stating age, qualifications, references, &c., should be addressed to “The HONORARY SECRETARIES, GEOGRAPHICAL SOCIETY, I Queen Street, Edinburgh,” not later than June 26, 1905.
It is particularly requested that there be no canvassing of Members of Council.
ons for the appointment of ASSISTANT
Breams Buildings, Chancery Lane, E.C.
MASTERS.-Required @ For Technical School. Special Subjects.
MATRICULATION, INTERMEDIATE, FINAL. PREPARATION by CORRESPONDENCE and ORAL TUITION on a THOROUGHLY INDIVIDUAL SYSTEM. Fees based on success.
The STAFF includes Graduates of Oxford, Cambridge, London, and Royal Universities, Science Medallists, Prizemen, Scholars, &c.
SINGLE SUBJECTS TAKEN: Science, Mathematics, Logic, Psychology, Political Economy, Latin, Greek, French, German, &c.
For terms, &c., address Mr. J. CHARLESTON, B.A. (Lond, and Oxon.),
MECHANICAL ENGINEERING DEPARTMENT.
PATTERN MAKER and INSTRUCTOR in PATTERN MAKING full time. Salary, £120 per annum.
JUNIOR DRAWING OFFICE INSTRUCTOR, full time. Salary, 6100 per annum.
LABORATORY DEMONSTRATOR for the Engineering Laboratories, full time.
JUNIOR TECHNICAL ASSISTANT, full time. EVENING INSTRUCTOR in AUTOMOBILE WORK. two evenings per week.
ELECTRICAL ENGINEERING DEPARTMENT. JUNIOR TECHNICAL ASSISTANT. full time. JUNIOR LECTURE ASSISTANT, full time. Further particulars of any of the above, with forms of application, which should be returned not later than 10 a.m. on Thursday, June 29, 1905, can be obtained on application by letter to
R. MULLINEUX WALMSLEY, D.Sc., Principal. For other Scholastic Advertisements, see page lis.
W. WILSON. STUDENT'S SPECTROMETER.
DR. H. STROUD'S
Telescope and prism
min.; clamp and fine
circle. In case. Price
... £6 0 0 A very large number of these instruments have been sold,
and have given exceptional satisfaction. The Resonance Tube is 31:11 BELMONT STREET. LONDON, N.W. long, with a graduated scale fixed at the side. The sliding reservoir moves easily in a
Accurate and grooved frame, so that the water
BRADY & MARTIN, LTD.,
THE NEW PATENT
Scientific Apparatus Makers, NEWCASTLE - UPON - TYNE.
Makers and Dealers in all kinds of Chemical and Physical Descriptive
To be obtained of all Opticians, or Apparatus for Schools and Colleges, Works' Laboratories
the SOLE MAKERS, and Special Research Work.
F. DARTON & CO., CONSTRUCTION OF NEW FORMS OF APPARATUS
CLERKENWELL OPTICAL WORKS, UNDERTAKEN.
| 142 ST. JOHN STREET, LONDON, E.C.