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MACMILLAN & CO.'S BOOKS FOR STUDENTS OF ZOOLOGY.

VOLUME 1. JUST PUBLISHED.

THE CAMBRIDGE NATURAL HISTORY.

EDITED BY S. F. HARMER, Sc. D., F. R.S., AND A. E. SHIPLEY, M.A., F. R.S.
TO BE COMPLETED IN TEN VOLUMES. 8vo. PRICE 17. NET EACH.

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Although this volume is the first in the Series as it was planned, it is actually the ninth in order of publication. The final volume (which forms Vol. IV. of the Series) is in the press, and the publishers hope that this important scheme will be brought to conclusion by its publication at a date not far distant.

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OF ZOOLOGY.

By Prof. T. J. PARKER, D.Sc., F.R.S., and Prof.
W. A. HASWELL, M.A., D.Sc., F.R.S.
Illustrations. Crown 8vo. IOS. 6d.

With 300

ZOO

A TEXT-BOOK OF ZOOLOGY.
By Professor T. J. PARKER, D.Sc., F. R.S., and Profes.
sor W. A. HASWELL, M.A., D.Sc., F.R.S. In Two
Vols. With Illustrations. Medium 8vo, 36s. net.
INTRODUCTION то
LOGY. By C. B. and G. C. DAVENPORT. Crown
8vo. 6s.
LESSONS IN ELEMENTARY
BIOLOGY. By Prof. T. J. PARKER, D.Sc., F.R.S.
Illustrated. Third Edition, revised. Crown 8vo. 10s. 6d.
A COURSE OF INSTRUCTION
IN ZOOTOMY. (Vertebrata.) By Professor T. J. PAR-
KER, D.Sc., F.R.S. With Illustrations. Crown 8vo.
8s. 6d.

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Illus

[Nature Series. AN INTRODUCTION TO THE OSTEOLOGY OF THE MAMMALIA. By Sir WILLIAM H. FLOWER, F.R.S., F.R.C.S. trated. Third Edition. Revised with the assistance of HANS GADOw, Ph.D. Crown 8vo. 105. 6d. A TEXT-BOOK OF COMPARATIVE ANATOMY. By Dr. ARNOLD LANG. With Preface by Dr. ERNST HAECKEL. Translated by H. M. and M. BERNARD. Vols. I. and II. (completing the Invertebrates). 8vo. 175. net. each. ELEMENTS OF THE COMPARATIVE ANATOMY OF VERTEBRATES. M apted from the German of Professor WIEDERSHEIM By Professor W. NEWTON PARKER. 270 WoodcutMedium 8vo. Second Edition. 125. 6. net. THE STRUCTURE OF MAN: An INDEX to his PAST HISTORY. By Profes WIEDERSHEIM. Translated by 11. M. BERSAKI 25/ Professor G. B. Howes, F.R.S. With 105 Figures 1.

A

the Text. 8vo. 85. net.

EM

TREATISE ON COMPARATIVE EMBRYOLOGY. By F. M. BALFOUR, F.R.S. 2 vols. 8vo. Vol. I. 185. Vol. II. 215. THE ELEMENTS OF BRYOLOGY. By Sir MICHAEL FOSTER, K.C.R M.D., F.R.S., and Professor F. M BALFOUR, F.RS Second Edition, revised. Edited by A. SEDGWICK, M. Å, and W. HEAPE, M. A. Illustrated. Crown 8vo. 105. 6

WARNING.

Observe that the Regulator of Burner, Body of Furnace, and Hood are all dis. tinctly stamped in the metal BREWSTER, SMITH & Co., LONDON." Beware of imita tions that do not contain the essen. tial feature of this burner's success.

MARBLE REDUCED TO QUICKLIME IN 10 MINUTES

with our NEW BLAST BUNSEN BURNER AND

MIDGET FURNACE.

We make these in two sizes at present, " and " and the prices are-Burners only, 1/6 and 2/6; complete with Furnace, 4/6 and 6/-.

JENA LABORATORY GLASSWARE.

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The consumption of gas is the SCHOTT & GEN. Glassworks, Jena (GERMANY).

same as with an ordinary Bunsen, but the heat derived is three times as great, and a number of interesting experiments can be performed with them, which have only been possible before with very expensive furnaces. 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.

LABORATORIES FITTED & FURNISHED THROUGHOUT.
Our NEW CHEMICAL APPARATUS LIST post free, 1/-
Gratis to Colleges and Laboratories.

THE SOUTHPORT ENLARGING, COPYING,
AND REDUCING TABLE AND EASEL

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The Jena Glasses are, in the U.K., on sale with the following firms:

Aberdeen.
A. & J. SMITH, 23 and 25 St.
Nicholas Street.

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ORME & CO., 56 & 58 Granby Row. i

Manchester. JAMES WOOLLEY, SONS & Co., Ltd., Victoria Bridge. Newcastle-upon-Tyne. BRADY & MARTIN, Ltd. London. BAIRD & TATLOCK (London Ltd., 14 Cruss Street, Hatton Garden, E.C.

F. E. BECKER & CO. (W. and J. George, Ltd., Successcrs), 33 to 37 Hatton Wall, Hatton Garden, E. C.

A. GALLENKAMP & Co., Ltd., 19 & 20 Sun Street, Finsbury, E.C. JOHN J. GRIFFIN & SONS, Ltd., Kingsway, London, W.C. TOWNSON & MERCER, Camomile Street, E.C.

SCIENTIFIC INSTRUMENTS,

34

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PURE CHEMICALS Standley Belcher & Mason, Ltd.,

LUDGATE HILL, BIRMINGHAM.

Telephone No.: 3825.
Telegraphic Address:

"LABORATORY, BIRMINGHAM."

GLEW'S

SCREEN

PITCH BLENDE

SCINTILLOSCOPE

(PATENT).

Shows a magnificent display of scintillations, showers of sparks, direct from the mineral Pitchblende, Radium, Polonium, Uranium, Thorium, or any radio-active substance, even a Welsbach mantle contains sufficient Thorium to excite the very sensitive screen of the Scintilloscope, which is far more sensitive than the Spinthariscope. The Scintilloscope rivals the most delicate Electroscope as a detector of Alpha rays.

The eye sees an inexhaustible shower of stars of white light giving a very realistic idea of the ceaseless activity of these marvellous substances which are producing the terrific bombardment causing this beautiful display. Glew's Scintilloscope, Superior Lens, with Extra-sensitive Pitchblende and Polonium Screens, giving brilliant effects, Complete, 7s. 6d., Post free, U.K. Foreign Postage extra, weight 2 ounces.

Pieces of Pitchblende mineral, ground flat and polished, with Sensitive Screen attached, for use in Scintilloscope or with any strong pocket magnifier, from 75. 6d. each, according to size.

Radio active supplies of every description, on Sale or Hire. Radium Bromide, 1,800,000 units on hire for lectures. Nat. Tel. 1787 Hop.

F. HARRISON GLEW, Patentee; Radiographer (Silver Medallist, Paris, 1900), 156 Clapham Road, London, S. W.

THORIONITE.

in. diameter,

Ordinary, 4/- per oz. Typical Cubes, all picked, and
9/- per oz.; in., in. and above, at from 1/- to 4/- a cube.
Twin Crystals, 2/- per gramme. POST FREE.
NEW and EXTENDED EDITION of TABLE of RARE
ELEMENTS, giving full scientific particulars, 6d. post free.
ARMBRECHT, NELSON & CO., Scientific Chemists,

71 & 73 Duke Street, Grosvenor Square, London, W.

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BY JOHN MORLEY, M.P.

With Portrait. In Two Vols. 8vo, 5s. net each.

THE LIFE & EXPERIENCES OF

Sir Henry Roscoe, D.C.L., LL.D., F.R.S.

With Photogravure Portraits and other Illustrations. Svo. 125. net.

ADONIS, ATTIS, OSIRIS.

IOS. net.

Written by Himself.

Studies in the History of Oriental Religion. By J. G. FRAZER.
D.C.L., LL.D., Litt. D., Author of "The Golden Bough." 8vo.

TRIGONOMETRY FOR BEGINNERS.

2s. 6d.

By Rev. J. B. LOCK, M.A., and
J. M. CHILD, B.A. Globe 8vo.

THIRD EDITION, REVISED, NOW READY.

THE COAL QUESTION. An Inquiry concerning the Progress of the Nation, and the Probable

Exhaustion of our Coal-mines. By the late W. STANLEY JEVONS,

M.A., LL.D., F.R.S. Third Edition, revised and Edited by A. W. FLUX, M.A. 8vo. IOS. net.

THEORETICAL AND PRACTICAL MECHANICS & PHYSICS.

A Preliminary Science Course for Artisans in Evening Schools. By A. H. MACKENZIE, M.A., B.Sc., A.R.C.Sc. Head of the Physics Department, Cockburn High School, Leeds. Crown 8vo. 15.

A SYSTEM OF APPLIED OPTICS.

BEING A COMPLETE SYSTEM OF FORMULE OF THE SECOND ORDER, AND THE FOUNDATION OF A COMPLETE SYSTEM OF THE THIRD ORDER, WITH EXAMPLES OF THEIR PRACTICAL APPLICATION. By H. DENNIS TAYLOR, Optical Manager to T. Cooke and Sons, Ltd., of London, York, and Cape Town 4to. 30 net.

OUTLINES

OF THE EVOLUTION OF WEIGHTS AND

MEASURES AND THE METRIC SYSTEM. By WILLIAM HALLOCK, Ph.D., Professor of Physics in Columbia University in the City of New York, and HERBERT T. Wade, Editor for Physics and Applied Science, "The New International Encyclopædia." 8vo. IOS. net.

THIRD EDITION. Entirely Re-written and Enlarged.

CHEMICAL TECHNOLOGY AND ANALYSIS OF OILS, FATS,

AND WAXES. By Dr. J. LEWKOWITSCH, M.A., F.I.C., &c., Consulting and Analytical Chem ist and Chemical
Engineer; Examiner in Soap Manufacture and in Fats and Oils, including Candle Manufacture, to the City and Guilds of
London Institute. With 88 Illustrations and numerous Tables. In Two Volumes. Medium 8v). Gilt tops. 36s. Det.
NATURE.-"The standard English book of reference on the subject."

THE LABORATORY COMPANION
COMPANION TO FATS AND OILS

INDUSTRIES. By Dr. J. LEWKOWITSCH, M.A., F.I.C. 8vo. 6s. net.

CHEMICAL TRADE JOURNAL.-" Bound to become a constant companion to the chemist who deals with oils and fats." SECOND IMPRESSION NOW READY.

An Introduction to the Science and Practice of

QUALITATIVE CHEMICAL ANALYSIS,
ANALYSIS, INORGANIC.

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For the New Syllabus of the Preliminary Examination for the Certificate (1907).

LESSONS IN SCIENCE. A Preliminary Course of Physics and Chemistry. By Professor R. A.

GREGORY and A. T. SIMMONS, B.Sc. Illustrated. 31. 6ỉ.

THE BEGINNER'S SET OF
SET OF MATHEMATICAL INSTRU-

MENTS. Bow Compass; Dividers; Two Nickel Set Squares (45° and 60° respectively), 4 inches and 5 inches long, two edges of which show inches and tenths and millimetres; Nickel Protractor; double bevelled 6-inch Rule showing inches and tenths and millimetres; and a Lead Pencil. All enclosed in Metal Pocket-Case. Is. 6d. net.

W. G. PYE
PYE & Co.,

SCIENTIFIC INSTRUMENT

MANUFACTURERS,

GRANTA WORKS, CAMBRIDGE.

SUBSTANTIAL, RELIABLE LABORATORY APPARATUS AT REASONABLE prices. ILLUSTRATED LIST on application.

OCTOBER No. NOW READY.

THE SCHOOL WORLD.

A MONTHLY MAGAZINE OF EDUCATIONAL WORK AND PROGRESS.

SIXPENCE MONTHLY. YEARLY VOLUME 75. 6d. NET.

PRINCIPAL CONTENTS.

The School Library as an Aid to Form-Teaching. By the Rev. J. M. Lupton, M. A.-Pictures for School Decoration. By E. M. Carter. The Overbalanced Curriculum. A Plea for Individuality in Leisure Hours. By Arthur Rowntree, B.A. -Matriculation at the English Universities. By Fred Charles, B. A.-Object-Lessons. II. By O. H. Latter, M. A.Spelling Reform. By John Bygott.-Physical Training in Sweden. (Illustrated.) By Aline Rothera.-Superannuation in Scotland.-Oxford Local Examinations, 1905. Hints for Teachers from the Examiners' Reports.-School Training for the Home Duties of Women. By M. Cade.-Practical Studies for Schools. Report of a British Association Committee.The Training of the Teacher of Domestic Science. By Mary E. Marsden.-Correspondence: Apparatus for the Determination of the Coefficient of Linear Expansion of a Metal Tube. (Illustrated.) By E. T. Bucknell.

MACMILLAN & CO., LTD., LONDON.

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WORTHIES.

The following is a list of the Steel Portraits that have appeared in the above Series:-

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HERMANN L. F. HELMHOLTZ.

N.B.-The Portraits of Sir A.

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Geikie, Lord Lister, Prof. Cannizzaro, Prof. von Kölliker, Prof. S. Newcomb, Sir W. Huggins, Lord Rayleigh and Prof. Suess belong to a New Series and are Photogravures.

Proof impressions of these, printed on India paper, may be had from the Publishers, price 5s. each; or the Series of 35 Portraits in a Handsome Portfolio for £9, carriage paid. The Portfolio may be had separately, price 6s.

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VOLCANIC DUST

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post free.

NEW and EXTENDED EDITION of TABLE of RARE ELEMENTS. giving full scientific particulars, 6d. post free.

ARMBRECHT, NELSON & CO., Scientific Chemists,

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THE IRISH NATURALIST.
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Edited by GEO. H. CARPENTER, B.Sc., and R. LLOYD
PRAEGER, B.A.

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STUDENTS' MICROSCOPES,

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Chemical and Scientific Instrument Makers, Laboratory Furnishers, and Manufacturing Chemists.

BRANCHES :

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LONDON-29 MARCARET ST., RECENT ST., W.
Berlin. Frankfort o/M. Hamburg. Vienna. St. Petersburg.

MICROSCOPES

Suitable for every

Class of Scientific and
Technical Research.

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PHOTO-
MICROGRAPHIC

ÅND

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PROJECTION
APPARATUS.

Write for Illustrated Catalogue "Mn" post
free on application.

A NEW PATTERN

FORTIN'S STANDARD BAROMETER

(Registered Design No. 420,297-)

As will be seen by the illustration, this Barometer built on original lines.

By the absence of the ordinary tubular enclosures (in the usual form of instrument) the mercurial column is FULLY EXPOSED to view, NO SHADOWS are thrown upon the column, and therefore an extremely accurate and instantaneous reading is made possible. The scales being graduated upon the flat side pieces the DIVISIONS AND FIGURES ARE ALWAYS IN VIEW, and the vernier is very much more legible than in the ordinary tubular patterns.

The bore of the tube is 0.5 inch.

The scales are graduated in inches and millimetres, and, by means of the verniers, are capable of being sub-divided to read to 0.002 inches and 0.1 m/m.

The attached Thermometer on the body of the instru ment is graduated in Fahrenheit and Centigrade scales. It is the BOLDEST Standard Barometer made. The PRICE IS LOWER than that of any other form of Standard Barometer of the same dimensions.

It yields readings equally close as the highest priced instruments.

Price complete, mounted on handsome Polished Solid Mahogany Board, with Brackets for Suspension, and Opal Glass Reflectors,

£7 10s. Od.

SMALLER SIZE, "THE STUDENTS," designed for Schools for demonstration work, and small private Observatories; bore 25; reading to 01 inch and 1 millimetre. £3 7s. 6d.

Sole Manufacturers and Proprietors of the Regd. Design:
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46 HATTON GARDEN, LONDON, E.C.
ACTUAL MAKERS OF ALL KINDS OF METEOROLOGICAL INSTRUMENTS.
Contractors to H.M. Government. Estd. 150 years.
Telegrams: Rapkin, London. Telephone: 1981 Holborn.

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