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Southampton Buildings, High Holborn, W.C.
SECOND-HAND TOURIST TELESCOPES.
SEVERAL SPECIAL BARGAINS. (Military Regulation Telescope, Power 20, £1 5s. (2) Military Signalling Telescope, Power 25, 2 1/8 glass, £1 10s. (3) Military Fortification Telescope, Power 35. 2 3/8 glass, £2. (4) Admiralty Cadet Telescope, £1 5s. (5) Admiralty Coastguard Telescope, £1 10s. (6) Several Target Telescopes suitable for Rifle Clubs, from £2 10s. A large quantity of Stands for these Telescopes, from 15s. to 25s.
These Telescopes are by the leading London Makers.
WATKINS & DONCASTER,
Naturalists and Manufacturers of
CABINETS AND APPARATUS
FOR ENTOMOLOGY, BIRDS' EGGS AND SKINS, AND ALL
SPECIAL SHOW-ROOM FOR CABINETS.
For Excellence and Superiority of Cabinets and Apparatus, refer-
Birds, Mammals, &c., Preserved and Mounted by First-class
36 STRAND, LONDON, W.C.
New Catalogue (102 pp.) just issued, post free.
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.
A large stock of Minerals, Rocks, Fossils and Microscopic Obracts for
NEW CATALOGUE POST FREE
THOMAS D. RUSSELL, 78 Newgate St., London, E.C.
Gentlemen interested in the above study are invited to send to JAMES R. GREGORY & CO.,
1 Kelso Place, Kensington Court, London, W., for a Prospectus of THE TWENTIETH CENTURY ATLAS OF MICROSCOPICAL PETROGRAPHY,
now being issued in Twelve Monthly Parts, each Part containing Four Fine Half-Tone Plates, and also Four actual Rock Sections. Subscription in advance, either Monthly, 7/-; Quarterly, 21/-; or for the whole Series of 12 Monthly Parts & 48 Sections, £4 4s
LIVING SPECIMENS FOR
Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actinosphærium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, Melicerta, and many other specimens of Pond Life. Price is. per Tube, Post Free. Helix pomatia, Astacus, Amphioxus, Rana, Anodon, &c., for Dissection purposes. THOMAS BOLTON,
25 BALSALL HEATH ROAD, BIRMINGHAM MARINE BIOLOGICAL ASSOCIATION OF THE UNITED KINGDOM. THE LABORATORY, PLYMOUTH. The following animals can always be supp ied, either living or preserved by the best methods :-
Sycon; Clava, Obelia, Sertularia; Actinia, Tealia, Cary pallia, Alcyonium; Hormiph ra (preserved); Leptoplana; Lineu, Amphuporus, Nereis, Aphrodite, Aren cola, Lanice, Terebella; Lepas Kalanus, Gammarus, Ligia Mysis, Nebalia, Carcinus; Patella, Buccinum, Eledone. Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echinus, Ascidia, Salpa (preserved), Scyllium, Raia. &c., & For prices and more detailed lists apply to Biological Laboratory, Plymouth.
Per Line after
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O 15 8
One Sixteenth Page, or Eighth Col. 10
Half a Page, or a Column 3
o 18 6 Whole Page
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Cheques and Money Orders payable to MACMILLAN & CO., Limited.
OFFICE: ST. MARTIN'S STREET, LONDON, W.C.
(Patented in Britain).
NO BRUSHES, NO BANDS, NO INDEPENDENT MOTOR.
See NATURE, July 20 1905. [age 277.
Price, including box and packing, £4 : 6 : 6
MEDICAL SUPPLY ASSOCIATION,
228 Gray's Inn Road, London, W.C. Descriptive Circular upon application.
NEW MICROSCOPIC SLIDES
From the New Issue of W. WATSON & SONS' No. 3 CATALOGUE, just published. Post Free on application.
SEND FOR THE ABOVE NEWLY PUBLISHED CATALOGUE OF MICRO. OBJECTS.
WATSON'S CATALOGUE OF MICROSCOPES (153 pages) is of special interest to all Microscopists.
W. WATSON & SONS, 313 High Holborn, London, W.C.
Branches-16 FORREST ROAD, EDINBURGH, and 2 EASY ROW, BIRMINGHAM.
CROSSLEY'S GAS ENGINES
SERIES II. F/6.
BRITISH DESIGN AND WORKMANSHIP.
EQUIVALENT TO FOUR LENSES AT THE PRICE OF ONE.
CATALOGUE OF HIGH-CLASS CAMERAS AND LENSES, POST FREE.
J. H. DALLMEYER, Ltd., 25 NEWMAN ST., OXFORD ST., LONDON, W.
MAKERS OF THE CELEBRATED DALLMEYER LENSES.
Irinter by RICHARD CLAY AND SONS, LIMITED, at 7 a 1 read Street Hill, Queen Victoria Street, in the City of London, and published by MACMILLAN AND CO., LIMITEL, at St. Martin's Street, London, W.C., and THE MACMILLAN COMPANY, to Fifth Avenue, New York.-THURSDAY, August 17, 1
RUBENS' LINEAR THERMOPILE.
NEGRETTI & ZAMBRA'S
LONG RANGE BAROMETERS
THE DIAGONAL BAROMETER.-In this instrument the tube is much longer than usual, and at the point on the vertical column where in ordinary Mercurial Barometers the 28 inches would be marked, the tube is bent at an angle and the remaining 3 inches of the scale-viz.: 29, 30, and 31are extended over a tube 36 inches long.
The mercury now moving diagonally instead of vertically, travels over 12 inches of the tube to every inch on the vertical scale.
The slightest variation, even or" to which the scale is
Further Particulars and Prices of this ard other long
38 HOLBORN VIADUCT.
JOHN J. GRIFFIN & SONS, Ltd., BRANCHES: 45 CORNHILL, AND 122 REGENT STREET,
MAKERS OF SCIENTIFIC INSTRUMENTS, Sardinia Street, London, W.C.
ENGINEERING AND CHEMISTRY.
CITY AND GUILDS OF LONDON
The COURSES of INSTRUCTION at the Institute's CENTRAL TECHNICAL COLLEGE (Exhibition Road) are for Students not under 16 years of age; those at the Institute's TECHNICAL COLLEGE, FINSBURY, for Students not under 14 years of age. The Entrance Examinations to both Colleges are held in September. Particulars of the Entrance Examinations, Scholarships, Fees, and Courses of Study, may be obtained from the respective Colleges, or from the Head Office of the Institute, Gresham College, Basinghall Street, E.C.
CITY AND GUILDS CENTRAL TECHNICAL COLLEGE.
A College for higher Technical Instruction for Day Students not under 16 preparing to become Civil, Mechanical, or Electrical Engineers, Chemical and other Manufacturers, and Teachers. The College is a "School of the University of London" in the Faculty of Engineering. Fee for a full Associateship Course, £30 per Session.
Fees, 15 per
Physics and Electrical Engineering Principal of the College.
M. Inst.M.E. R. MELDOLA, F.R.S., F.I.C.
The SESSION 1905-6 begins on October 3. Organic and Physical Chemistry will be delivered during the Session. The Laboratories are fitted with the most recent improvements for study and research in Chemistry and Metallurgy in all its branches. Several Scholarships are tenable at the College. CALENDAR, containing full information, price is. (by post, 15. 4d.). For prospectus and further
JJ. E. MACKENZIE, Ph.D., D.Sc
B. W. CLACK, B.Sc.
Geology & Mineralogy
Calendar 6d. (post free 8d.), on application to the SECRETARY.
THE UNIVERSITY OF LIVERPOOL. SESSION 1905-6 COMMENCES OCTOBER 2. FACULTY OF ENGINEERING.
HOLMES, M. Inst. C. E., M.I.E.E. ENGINEERING DESIGN/Lecturer - J. WEMYSS ANDERSON, AND DRAWING... Assoc. M. Inst. C. E., M.I.Mech. E. APPLIED MECHANICS Lecturer-J. H. GRINDLEY, D.Sc.
The courses of study in the Faculty leading to the ordinary degree of Bachelor of Engineering or the certificate in Engineering are so arranged as to afford a general scientific training for those intending to become engineers or to enter any allied profession. The Honours course enables students to specialise in some branch of the profession, and opportunities are afforded for post-graduate work and research.
The special prospectus of the Faculty may be obtained on application to the REGISTRAR.
LONDON HOSPITAL MEDICAL
(UNIVERSITY OF LONDON.)
Special Classes for the Preliminary Scientific M. B. Examination (Londo: } will commence on October 2.
Fee for the whole Course (one year), ro Guineas. Special Classes are also held for the Intermediate M.B. Lond., the Primary and Final F.R.C.S., and other Examinations.
MUNRO SCOTT, Warden. For other Scholastic Advertisements, see page clxi, also
CLERKENWELL, LONDON, E.C.
ENGINEERING DAY COURSES IN MECHANICAL,
FULL DAY COURSES in the THEORY and PRACTICE of the above subjects will commence on MONDAY, OCTOBER 2, 1905. ENTRANCE EXAMINATION on WEDNESDAY and THURSDAY, SEPTEMBER 27 and 28.
The Courses for Mechanical and Electrical Engineering include periods spent in Commercial Workshops, and extend over four years. They also prepare for the degree of B.Sc. in Engineering at the University of London. Fees for either of these Courses, £15 or £1 per annum.
Three Entrance Scholarships of the value of £52 each, giving free tuition for the full course in Mechanical or Electrical Engineering, will be offered for competition at the Entrance Examination in September next. Conditions can be obtained from the PRINCIPAL.
Full particulars as to fees, dates, &c., and all information respecting the work of the Institute, can be obtained at the Institute or on application to R. MULLINEUX WALMSLEY, D.Sc., Principal.
THE GLASGOW AND WEST OF SCOTLAND TECHNICAL COLLEGE, GLASGOW.
SESSION begins TUESDAY, SEPTEMBER 26, 1905, in the new buildings recently erected for the College.
The Diploma of the College is granted in the following Departments :CIVIL ENGINEERING, MECHANICAL ENGINEERING, ELECTRICAL ENGINEERING, MINING, NAVAL ARCHITECTURE, CHEMISTRY, METALLURGY, MATHEMATICS and PHYSICS. In conjunction with the Glasgow School of Art a Course for a Joint Diploma in Architecture has been arranged.
The Courses of Study for the Diploma usually extend over three Sessions. The Average Fee per Session is £12 125. Special Courses for individual Students are arranged as required. Holders of the Diploma are eligible for the Degree of B.Sc. in ENGINEERING of the UNIVERSITY OF GLASGOW after attendance for at least one Session upon prescribed University Classes. New and well-equipped Laboratories in the Departments of Physics, Chemistry, Technical Chemistry, Metallurgy, Mechanics, Mechanical and Electrical Engineering have been provided. The Preliminary Examination for Candidates for the Diploma begins on September 18. Names of intending candidates must be lodged not later than September 15, on forms which will be sent on application. CALENDAR (price, by post, 1s. 4d.) and PROSPECTUS (gratis) will be sent on application to the SECRETARY.
UNIVERSITY COLLEGE, LONDON.
(UNIVERSITY OF LONDON.)
The SESSION of the FACULTY of MEDICINE will begin on MONDAY, OCTOBER 2, 1905. Introductory Lecture at 4 p.m. by Prof. H R. KENWOOD. M.B., D.P.H, F.C.S.
The Examinations for the Entrance Scholarships and Medical Exhibitions will begin on September 26, 1905.
The ANNUAL DINNER will be held on OCTOBER 2 at the Hotel Cecil, E. MARKHAM SKERRITT, Esq., M.D., F.R.C. P., in the Chair. Scholarships, Exhibitions and Prizes of the value of £800 are awarded annually.
In University College Hospital about 3000 In-patients and 45,000 Out. patients are treated during the year. Thirty-six Appointments, eighteen being resident (as House Surgeon, House Physician, Obstetric Assistant, &c), are filled up by competition during the year, and these, as well as all Clerkships and Dresserships, are open to Students of the Hospital without extra fee. Resident Officers receive free board and lodging.
Prospectuses, with full information as to Classes, Prizes, &c.. may he obt uned from the SECRETARY, University College, Gower Street, W.C. RISIEN RUSSELI., M.D., F.R.C. P., Dean
WESTMINSTER HOSPITAL MEDICAL SCHOOL,
CAXTON STREET, S. W.
A SCHOOL OF THE UNIVERSITY OF LONDON. The WINTER SESSION will commence on MONDAY, OCTOBER 2, 1905 Scholarships of the aggregate value of £320 are offered to students entering in October. Examination on September 26 and 27. Fees 110 Gns. if paid in one sum on entrance. For University Students and those who have completed their anatomical and physiological studies 70 Gns. Special opportunities for Clinical work and for ho'ding the various hospital appointments. Dental students are specially provided for
Prospectus and further particulars may be ob ained from the DEAN.
COUNTY OF LONDON.
EDUCATION ACTS, 1870 TO 1903.
The LONDON COUNTY COUNCIL invites APPLICATIONS for the appointment of a DISTRICT INSPECTOR, under the Chief Inspector (Education). He will be required to inspect public elementary day schools and evening schools, and, if necessary, any other educational institutions within the district allotted to him.
The salary is £400 a year, rising by annual increments of L25 to a maximum salary of £600 a year.
The person appointed will be under the control of the Chief Inspector, and will be required to give his whole time to the duties of the office, and will in other respects be subject to the usual conditions atta hing to the Council's service, particulars of which are contained in the form of appli cation.
In connection with this appointment there is no restriction with regard Applications shou'd be made on the official form to be obtained from the CLERK OF THE LONDON COUNTY COUNCIL, at the County Hall, Spring Gardens, S. W., or at the Education Offices, Victoria Embankment, W.C. The applications must be sent in not later than 10 a m. on Saturday, September 23, 1905, addressed to the Education Offices as above, and accompanied by copies of not more than three recent testimonials. Canvassing, either directly or indirectly, will be held to be a disqualifi cation for appointment.
The County Hall,
Spring Gardens, S.W.,
G. L. GOMME,
Clerk of the London County Council.
L.C.C. SCHOOL OF MARINE ENGINEERING.
APPOINTMENT OF JUNIOR DEMONSTRATOR.
The LONDON COUNTY COUNCIL invites APPLICATIONS for appointment as JUNIOR DEMONSTRATOR in PHYSICS and ELEC TRICAL ENGINEERING at the L.C.C. School of Marine Engineering, Poplar, for three evenings a week.
Salary at the rate of 10s. 6d. an evening.
Applications should be made on the official form to be obtained from the CLERK OF THE COUNCIL, Education Offices, Victoria Embankment, W.C., to whom they must be returned not later than 10 a.m. on Monday, Sep tember 18, 1905, accompanied by one copy of three testimonials of recent Candidates applying through the post for a form of application must enclose a stamped and addressed envelope.
Candidates other than su cessful candidates, invited to attend Committee, will be allowed third class return railway fare, but no other expenses. Canvassing, either directly or indirectly, will be considered a disqualifi
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. For other Scholastic Advertisements, see page clx, and pages ii and ii of Supplement.