Page images
PDF
EPUB

CONTENTS.

photographic method it has been found that the effect of Kirby.--Note Supplementary to a Paper on the Electric Driving of

Winding.gears: F. Hird.-Electric Winding-engines at the Exhibition Foucault currents is to augment the frequency of the

of the North of France, Arras, Pas-de-Calais : Ed. Lozé. --The Education oscillations per second without influencing the number of

of Mining Engineers in the United States: Prof. Howard Eckfeldt.-A. oscillations in each discharge. Hysteresis destroys the Outline of Mining Education in New Zealand : Prof. James Park.-Goaf

blasts in Mines in the Giridih Coal-field, Bengal, India : Thom23 oscillations and diminishes, more or less, the frequency.

Adamson -A study of the radiographic power of an X-ray tube : | LINNEAN Society, at 8. S. Turchini. The radiographic effects, as measured by CHEMICAL Society, at 8.-(1) The Constituents of the Seeds of Hydra

carpus Wightiana and Hydnuarpus Anthelmintica. Isolation of a the action on a photographic plate, are found to follow the

Homologue of Chaulmoogric Acid.-(2) The Constituents of the Seeds of same laws as the radioscopic effects, and there is reason

Gynocardia Odorata : F. B Power and M. Barrowcliff.-The Relation to suppose that the radiotherapeutic effects will follow of Ammonium to the Alkali Metals. A Study of Ammonium Magnesium

and Ammonium Zinc Sulphates and Selenates : A. E. H. Tutton.-Cansimilar laws as regards the relation between efficiency and

phorylazoimide : M. O. Forster and H. E. Fierz.-Influence of Substitnthe length of the equivalent spark.-On the conductivity

tion on the Formation of Diazoamines and Aminoazo-compounds. Part III. of the gases from flames : Eugène Bloch. The ions con

Azo-derivatives of the Symmetrically Disubstituted Primary Meta tained in the gases given off from a flame, at the end of diamines : G. T. Morgan and W. 0. Wootton.-Diazo-derivatives of

Mono-acylated Aromatic Para-diamines : G. T. Morgan and Miss F. M. a time sufficiently long take a mobility of the order of

G. Micklethwait.--The Significance of Optical Properties as Connoting 0:01 mm., and hence should be classed as large ions.-On

Structure; Campborquinone-hydrazones-oximes; a Contribution to the the ionisation and coefficient of magnetisation of aqueous Chemistry of Nitrogen: H. E. Armstrong and W. Robertson. --Solubility solutions : Georges Meslin.—The properties of pyrrhotine as a Measure of the Change undergone by Isodynamic Hydrazones. (t)

Canphorquinonephenylhydrazone. (2) Acetaldehydephenylhydrazone : W. in the magnetic plane : Pierre Weiss.--On the causes of

Robertson.-The Design of Gas-regulators for Thermostats : T. M. varieties of halation in photographic plates : A. Guébhard. Lowry.-The Constitution of Barbaloin. Part I.: H. A. D. Jowett and ---The triboluminescence of metallic compounds : D. C. E. Potter.--Infuence of Substitution on the Formation of Diazoamines

and Aminoazo-compounds. Part IV. 5-Bromo-as(4-Dimethyl-2: 4. Gernez. The luminous effect observed when certain

amine-toluene: G. T. Morgan and A. Clayton. -The Action of crystals are broken is not, as has been supposed, essentially

Hypobromous Acid on Piperazine : F. D. Chattaway and W. H. Lewis.a property of organic compounds, and a list of seventy-four i The Action of Magnesium Methyl Iodide on Pinene Nitroso-chloride :

W. A. Tilden and J. A. Stokes. - Racemisation Phenomena during the inorganic compounds is given in which this effect has been

Hydrolysis of Optically Active Menthyl and Bromyl Esters by Alkali: observed.--The properties of some anhydrous chlorides of

A. McKenzie, and H. B. Thompsor.. metals of the rare earths : Camille Matignon. Details

FRIDAY, JUNE 2. are given of the crystalline form, colour, density, melting i INSTITUTION OF MINING ENGINEERS (in ibe Rcoms of the Geological points, heats of solution and formation of the chlorides Society), at 10.30 A.M.-The Conveyor-system for filling at the Coal-lace,

as practised in Great Britain and Ainerica : W. C. Blackett and R. G of lanthanum, praseodymium, neodymium, and samarium.

Ware.-Underground Fires at the Greta Colliery, New Soosh -On a reaction of rhodium : Piñerûa Alvarez Chlorine,

Wales: J. Jeffries.-The Glology of Chunies Poort, Transvaal: A. R. acting on an alkaline solution of a rhodium salt, gives a

Sawyer. -Underground Horses at an Indian Colliery : T. Adamso . characteristic blue colour, due to the formation of sodium Description of the Eimbeck Duplex Base-line Bar: W. Eimbeck. perrhodate.-The action of the metal ammoniums on

SATURDAY, JUNE 3. alcohols : a general method for the preparation of the ROYAL INSTITUTION, at 3.- Exploration in the Philippines: A. H alcoholates : E. Chablay. The alkali ammoniums, acting

alkali ammoniums acting Savage Landor. upon a solution of the anhydrous alcohol in ammonia, give a quantitative yield of the alcoholate.--Propionylcarbinol

PAIGE and its derivatives : André Kling.-Contribution to the study of the derivatives of benzodihydrofurfurane : A. i The Anopheles Mosquitoes of India. By Dr. J. W. W. Guyot and J. Catel.--On methæmoglobin : M. Piettre Stephens .. ... and A. Vila.-Researches on the mode of action of philo- Exercises in Physics . . catalase : F. Batelli and Mlle. L. Stern. The name Mathematical Metapbysics ... philocatalase is given to a ferment which is present in British Minerals. By L. J. S....... many animal tissues, although without direct action on Our Book Shelf :catalase it possesses the property of protecting the cata Dickerson : “Moths and Butterflies"..... lase against the destructive action of anticatalase. The Stewart : “ Second Stage Magnetism and Electricity ** present paper deals with the mechanism of this reaction. Tarazona : “ Memoria sobre el Eclipse Total de Sol del -Researches on the comparative power of adhesion of

dia 30 de Agosto de 1905" ...::::::.. different copper solutions employed as a remedy against Otto: "Naturalistische und religiöse Weltansicht". :. 17 mildew : E. Chuard and F. Porchet.—On a bacterial Emch : “ An Introduction to Projective Geometry and decay of cabbage : Georges Delacroix.-The classification

its Applications ” .............. 77 and nomenclature of arable earths according to their Letters to the Editor:mechanical constitution : H. Lagatu.-The termination of Fictitious Problems in Mathematics.-A. B. Basset, the motor nerves in the striated muscles of man: R.

F.R.S. ; Dr. E. J. Routh, F.R.S. ....... 78 Odier.--On the problem of statical work : Ernest Solvay. On the Spontaneous Action of Radio-active Bodies -On the overlapping strata in the Piedmont zone : Maurice

on Gelatin Media. (Illustrated.)- John Butler Lugeon and Émile Argand.--On an extraordinary halo :

B urke . . . . . . . . . . . . . . . . . . M. Pernter.

The Consolidation of the Earth.- Rev. A. Irving . .

The Spirit-level as a Seismoscope. -G. T. Bennett.
DIARY OF SOCIETIES.

A Feaiher-like Form of Frost. (Illustrated.)-H. M.
W arner . . . .

. . . . . . . . . . . THURSDAY, MAY 25

The Evolution of Engraving in the Stone Age. (Illus. Roval Society, at 4.30.-Croonian Lecture, “The Globulins": W. B. Hardy, F.R.S.

traled.) By A. C. H. ROYAL INSTITUTION, at 5.-Electro-magnetic Waves : Prof. J. A. Flem The New Diplodocus Skeleton. (Illustrated.). ... ing, F.R.S.

The Masai of East Africa. (Illustrated.) By Sir H. H. INSTITUTION OF ELECTRICAL ENGINEFRS, at 8.-Wireless Telegraphy

Johnston, G.C.M.G., K.C.B.....
Measurements: W. Duddell and T. E. Taylor.

Notes. ...
FRIDAY, MAV 26.
ROYAL INSTITUTION, at 9.- The Development of Spectro-chemistry:

Our Astronomical Column :-
Prof. J. W. Brühl.

Newly Discovered Nebulae .....
PHYSICAL SOCIETY (at the National Physical Laboratory), at 3. 30. - The
Specific Heat of Iron al High

The Bruce Telescope Relerence Photographs.
Temperatures: Dr. Harker.- The
Measurement of Small Inductances : Mr. Campbell.-Two New Optical

Twelve Stars with Variable Radial Velocities..
Benches: Mr. Selby.

Double “Canals" on Mars in 1903 ....... SATURDAY, May 27. Royal INSTITUTION at 3 – The Ev. lution of the Kingship in Early

Catalogue of New Double Stars.. Society: Dr. J. G. Frazer.

| The Royal Society Conversazione .. THIRSDAY, JUNE 1.

Atmospheric Electricity Observed from Balloons. ROYAL INSTITUTION, at 5.- Electro-magnetic Waves : Prof J. A. Fleming,

By George C. Simpson ........... .. F.R.S

University and Educat on al Intelligence. .. . INSTITUTION OF MINT FNGINEERS (in the Rooms of the Geological

Societies and Academies ............. Society), at It A.V. --The Firing of Babcock Boilers with Coke-oven Gases: T. Y. Greener. -Compuund Winding-engine at Lumpsey Mine : M. R. I

des

[blocks in formation]
[graphic]

“No. 5 " SPECTROMETER. Designed with special

reference to STANDARD ANGULAR

MEASUREMENTS.

ILLUSTRATED LIST OF SPECTROSCOPES AND SPECTROSCOPIC ACCESSORIES FREE UPON

APPLICATION.

ADAM HILGER, Ltd., 75a Camden Road, London, N.W.

GOLD MEDAL AWARDED, ST. LOUIS EXHIBITION, 1904.

[merged small][merged small][merged small][merged small][merged small][merged small][graphic][merged small][subsumed][subsumed][merged small][merged small]
[blocks in formation]

MACMILLAN & CO,'S NEW BOOKS. TWENTY-SIX CRADUATED EXERCISES IN CRAPHIC STATICS,

some in Two Colours, and with Skeleton Data to practise upon, and including the Application to Roofs, Moving Locomotives, Retaining Walls, Lévy's Steel Arches, Girders (Original Constructions), Masonry Arches, Lévy's Weight Tables, with an Essay on Graphical Statics, in the form of a Running Commentary on the Exercises, each of which has full Instructions printed on its face, the

whole forming a Supplement to the Authors' Elementary Applied Mechanics. By T. ALEXANDER, M.Inst.C.E.I., Professor of Engineering, Trinity College, Dublin ; and A. W. THOMSON, D.Sc., C.E., Professor of Engineering, College of Science, Poona.

FCAP. BROADSIDE. SEWED. 10s. THE PRINCIPLES OF ECONOMICS. A Fragment of a Treatise on the

Industrial Mechanism of Society, and other Papers. By the late W. STANLEY JEVONS, LL.D., M.A., F.R.S. With a

Preface by HENRY Higgs. Svo, ios, net. THE TRADE POLICY OF GREAT BRITAIN AND HER COLONIES SINCE 1860.

By CARL JOHANNES Fuchs, Professor of Political Economy in the University of Freiburg i. B. Translated by CONSTANCE H. M. ARCHIBALD. With a Preface by the Right Hon. J. PARKER SMITH, M.A , M.P. Extra Crown Svo,

75. 6d. net.

FINANCIAL TIMES.-"Impartial students of the fiscal question will welcome this contribution to the great discussion, on the ground that it emanates from a foreign, and, therefore, unbiassed source-unbiassed, that is, so far as British politics and British schools of economic thought are concerned. ... The book is very thorough and painstaking." EASY GRAPHS. By H. S. Hall, M.A. Crown 8vo, is. THE STATE AND AGRICULTURE IN HUNGARY. Report of the Minister of

Agriculture, Dr. Ignatius Daranji, on his Agricultural Administration during the years 1896-1903. Translated by ANDREW GYÖRGY, Ex-M.P. Crown 8vo, 55. net.

MACMILLAN AND CO., LIMITED, LONDON.

RECENT & COMING ECLIPSES.

BY Sir NORMAN LOCKYER, K.C.B., F.R.S. Second Edition, containing an account of the Observations made at Viziadrug, in India, in 1898, and of the conditions of the Eclipses

visible in 1900, 1901 and 1905. 8vo. 6s. net.

MACMILLAN AND CO., LIMITED, LONDON.

HARVEY & PEAK,
BY APPOINTMENT TO THE ROYAL INSTITU.

TION OF GREAT BRITAIN.
POST OFFICE BRIDGE SETS AND
DEAD BEAT GALYANOMETERS.

POTENTIOMETERS. STUDENTS'
SPECTROMETERS. SPHEROMETERS.

INDUCTION COILS A SPECIALITY.
ELECTROMETER, NEW PATTERN.

[graphic]
[graphic]

. LIDI

TABLE OF RARE ELEMENTS WATKINS & DONCASTER,

CABINETS AND APPARATUS

Naturalists and Manufacturers of

By E. L. N. ARMBRECHT. Symbols, Atomic Weight, Discoverer, Isolater, Specific Gravity, Principal yource, Melting Point, Properties, Salts of. Price, &c.,

ARMBRECHT, NELSON & CO.,
71 & 73 Duke Street, Grosvenor Square, W.
N.B.-Sent Free on application.

PHENIX
ASSURANCE COMPANY, LIMITED.

FIRE OFFICE,
19 LOMBARD ST., E.C., and 57 CHARING CROSS, S.W.

ESTABLISHED 1782.
Moderate Rates. Absolute Security. Bloctric.
Lighting Rules Supplied. Liberal LOBS Settlemente.

Prompt Payment of Olalms.
LOSSBS PAID OVBR 286,000,000.

FOR ENTOMOLOGY, BIRDS' EGGS AND SKINS, AND ALL

BRANCHES OF NATURAL HISTORY.
· SPECIAL SHOW-ROOM FOR CABINETS.
N.B.-For Excellence and Superiority of Cabinets and Apparatus, refer-
ences are permitted to distinguished patrons, Museums, Colleges, &c.
A LARGE STOCK OF INSECTS, BIRDS' EGGS AND SKINS.
SPECIALITY.-Objects for Nature Study, Drawing

Classes, &c.
Birds, Mammals, &c., Preserved and Mounted by First-class

Workmen true to Nature.
All Books and Publications on Natural History supplied.
36 STRAND, LONDON, W.C.

(Five Doors from Charing Cross.) New Catalogue (102 pp.) just issued, post free.

BIRK BECK BANK

ALBERT EDWARD JAMRACH

(Late CHARLES JAMRACH),

NATURALIST, 180 ST. GEORGE STREET EAST. Implements of Savage Warfare, Idols, Sacred Masks, Peruvian Pottery,

Netsukis China, Lacquers, Gongs, Shells, and other Curios.

ESTABLISHED 1851.
Current Accounts. 2% Interest allowed on minimum

monthly balances when not drawn below £100.
Deposits. 21% Interest allowed on Deposit Accounts.
Advances made. Stocks and Shares bought and sold.
Apply C. F. RAVENSCROFT, Secretary,

Southampton Buildings, High Holborn, W.C.

NORWAY. - S.Y. "MIDNIGHT SUN.”

3,178 Tons. Two Berth Cabins. All Berths
on same level. Finest yachting steamer afloat.
Sailing June 10, 24 ; July 8, 22; August 5, 19.
Apply ALBION S.S. co., LTD.,

Newcastle-on-Tyne.

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 Object t's for

selection Specimens sent on approval.
Cabinets, Geologists' Hammers, Chisels, Card Trays, Glass-capped

Boxes, Models of Crystals, &c., &c.

NEW CATALOGUE POST FREE
THOMAS D. RUSSELL, 78 Newgate St., London, E.C.

MICROSCOPICAL PETROGRAPHY.

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

Hall 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.

[blocks in formation]

NOTICE.
Proof Copies of the Photogravure Portrait of

PROF. SUESS appearing in “Nature” of May 4 can be obtained from the Publishers at 5s. each.

ST. MARTIN'S STREET, LONDON, W.C.

MARINE BIOLOGICAL ASSOCIATION

OF THE UNITED KINGDOM.

THE LABORATORY, PLYMOUTH. The following animals can always be supplied, either living or preserved by the best methods :

Sycon ; Clava, Obelia, Sertularia ; Actinia, Tcalia, Caryophyllia, Alcy.
opium; Hormiphora (preserved); Leptoplana; Lineus, Amphiporus,
Nereis, Aphrodite, Arenicola, Lanice, Terebella ; Lepas, Balanas,
Gammarus, Ligia Mysis, Nebalia, Carcinus; Patella, Buccinum, Elodone,
Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echinus,
Ascidia, Salpa (preserved), Scyllium, Rala, &c., &c.

For prices and more detailed lists apply to
Biological Laboratory, Plymouth.

THE DIRECTOR.

NOTICE.-Advertisements and business letters for NATURE should be addressed to the Publishers; Editorial
Communications to the Editor. The telegraphic address of NATURE is “ Phusis,” LONDON.
SUBSCRIPTIONS TO "NATURE."

CHARGES FOR ADVERTISEMENTS.
E s. d. TO ALL PLACES ABROAD:- E s. d.

6 s. d.
early . . . , 180 Yearly . . . . 106"Three Lines in Column 02 61 Quarter Page, or Half
Half-yearly

Per Line after.
014 6

O 091a Column .
Half-yearly

. . I 15 · · 0 15 6 One Sixteenth Page,or Eighth Col. 10 o Half a Page, or a Column 3 5a Yearterly . . o 1 61 Quarterly . . .o 8 o One Eighth Page, or Quarter

1 Column . . . . 0 18 6 | Whole Page. . . 6 6 0 • The first line being in heavy type is charged for as Two Lines. Cheques and Money Orders payable to MACMILLAN EN CO., Limited.

OFFICE: ST. MARTIN'S STREET, LONDON, W.C.

SPECIAL ARRANGEMENTS for supplying C. H. F. MÜLLER'S world

renowned FOCUS TUBES at REDUCED PRICES have been made by THE MEDICAL SUPPLY ASSOCIATION, 228 Gray's Inn Road,

London, W.C.

[graphic]
[ocr errors]
[ocr errors]

Lophopu Marine), various with matrix (opaque,

[ocr errors]
[ocr errors]
[ocr errors]
[ocr errors]
[ocr errors]
[ocr errors]

With Double Regulator for Raising & Lowering Vacuum, 24/-
Tube similar in size but of different design-without Regulator, 14/-

Large Size (170 mm. diameter) Water Cooled ...£4 5 O New Illustrated and Descriptive List post free. MICROSCOPIC OBJECTS.

NEW AND BEAUTIFUL PREPARATIONS IN WATSON'S UNIQUE COLLECTION. Very fine Series, illustrating the development of an Ascidian S. d. Groups of Diatomaceæ, Spicules, &c. A large variety at S. d. (Aspersa), 16 preparations in case ...

reduced prices ...

8/6 to Section through entire bud of Lily .

Ő | NEW Edition of Supplementary List of latest Micro. Objects Beautiful Slides of Stephanocéros with cilia extended, price

now ready, post free. It gives full particulars of our beautiful according to perfection

... from 3/6 to

series of Aquatic Organisms, &c., &c. Lophopus crystallinus ... ... ...

Trypanosoma Brucei (Tsetse fly disease) .
** each
Malarial parasites-many phases

each Section of precious Opal, with matrix (opaqu

1 6 Radium for the Microscope. Mounted on a 3* slip as a Section of Quartz with fluid cavities ..

Micro. Object. Shows scintillations strikirgly with low power Leaf of Pampas Grass--very pretty section ... . ... ... 1 0 Objective. Quite new ... ... ... ... ... ... 56

For a Guinea a year you can have 240 Micro. Slides on hire from WATSON & Sons' Cabinets. Send for particulars. NEW.--WATSON'S DIFFRACTION BUTTONS. A scientific Novelıy. These buttons are made of polished steel upon which spiral lines osath inch apart are engraved. A beautifully soft radiated appearance is imparted by these lines, the colours being in the order of the Spectrum. Made in two sizes -inch diameter, 4/6 each ; 6 in case for 25

-inch diameter, 2/6 each ; or 6 in case for 15/Send for Watson's Illustrated Catalogues of Microscopes (No. 2), Microscopic Objects (No. 3), Telescopes and Field Glasses (No. 6),

Pot free on application to
W. WATSON & SONS. (Established)Optici

d) Opticians to H.M. Government,

1837 313 HIGH HOLBORN, LONDON, W.C. Branches-16 FORREST ROAD, EDINBURGH, and 2 EASY ROW, BIRMINGHAM. Awarded 42 Gold and other Medals. CROSSLEY'S GAS ENGINES RECENTLY

GREAT REDUCTION REMODELLED.

IN

CAS CONSUMED. Represents K and L types, giving 3.5 H.P.

Up to the end of 1904, and 5 H.P

over 50,000 engines respectively.

have been delivered, LIMITED SANCHESTER

representing about Immediate Delivery

three-quarters of a for Stock Sizes

million actual of Engines.

horse-power. CROSSLEY BROS., LTD., OPENSHAW, MANCHESTER.

[graphic]

THE STIGMATIC LENS.

SERIES II. F/6.
BRITISH DESIGN AND WORKMANSHIP.

Is the best All-round Lens for either Professional or Amateur use.
Each lens will give perfect definition with full aperture to the extreme corners of the plate
it is sold to cover ; with smaller stops it will cover at least two sizes larger, giving perfect sharp-
ness all over the plate, and thus becoming a wide-angle lens of the highest excellence. Either
combination may be used separately, giving foci of about it and 2 times the length of that of
the lens when used intact. The advantage of thus being able to choose the best point of view,
irrespective of distance, will be at once apparent to the artistic worker.
EQUIVALENT TO FOUR LENSES AT THE PRICE OF ONE.

Eleven Sizes are now ready, from 3 to 18 inches eq. focus.
CATALOGUE OF HIGH-CLASS CAMERAS AND LENSES, POST FREE.

[graphic]

J. H. DALLMEYER, Ltd., 25 NEWMAN ST., OXFORD ST., LONDON, W.

MAKERS OF THE CELEBRATED DALLMEYER LENSES. Printed by RICHARD CLAY AND SONS, LIMITED), at 7 && Bread Street Hill, Queen Victona Street, in the City of London, and published by MACMU LAN

AND Co., L.MUED, at St. Martin's Street, London, W.C., and THE MACMILLAN COMPANY, 66 Fifth Avenue, New York. -THURSDAY, May 25. Igos.

« PreviousContinue »