« PreviousContinue »
need not necessarily be alternations of transparency and opacity in order to produce the desired effect. Very close contact between the film and the grating is essential.-On atmospheric polarisa- | tion, by M. A. Hurion.-Researches on the higher alcohols and other impurities in vinic alcohol, by M. Émile Gossart. On the general relations which exist between the coefficients in the fundamental laws of electricity and magnetism, by M. E.
Mercadier. On the reflection of electric waves at the end of
a linear conductor, by M. Birkeland. -Multiplication of the number of periods of sinusoidal currents, by M. Désiré Korda.On the hygroscopic properties of several textile fabrics, by M. Th. Schloesing fils.-Contribution to the study of the Leclanché cell, by M. A. Ditte.-Attempt at a general method of chemical synthesis; formation of nitrogen compounds, by M. Raoul Pictet. -On the stereochemistry of the malic compounds, and the variation of the rotatory power of liquids, by M. Albert Colson. -On a chlorobromide of iron, by M. Lenormand.-On the saccharates of lime, by M. Petit.-On a new soluble ferment doubling trehalose into glucose, by M. Em. Bourquelot.-On the circulatory apparatus of Mygale Camentaria, Walck, by M. Marcel Causard.-Influence of the pressure of gases upon the development of vegetables, by M. Paul Jaccard.-On the ammonite layers of the inferior Malm in the county of Montejunta, Portugal; little known phases in the development of the mollusca, by M. Paul Choffat.-On the mode of reproduction of the parasites of cancer, by MM. Armand Ruffer and H. G. Plimmer.-M. Lippmann presented to the Academy, in the names of MM. Auguste and Louis Lumière, coloured photographs obtained by the interference method.
Physical Society, March 10.-Prof. Kundt, President, in the chair. -The President gave an account of some researches undertaken as an introduction to the study of Hall's phenomenon. As is well known, this is directly proportional to the intensity of the primary current, but inversely proportional to the pressure of the plates; on the other hand, it is not strictly proportional to the magnetising current in the case of the several metals so far examined, and it appeared probable that it might more possibly be proportional rather to the magnetisation of the plate. Prof. Kundt wished to test this possibility in the case of iron, nickel, and cobalt, employing transparent metallic films of these metals magnetised to 28,000 units, whose magnetisation could be tested directly by means of their rotatory power. It was found that the Hall effect increased hand in hand with the increase of rotatory power, and therefore proportionally to the magnetisation of the plates. The effect was, as Hall had already shown, positive in the case of iron and cobalt, negative in that of nickel. Bismuth deposited electrolytically in a transparent film gave very feeble or no results, whereas, when drawn out into a thin plate the effect was considerable.-Dr. Wren spoke on Maxwell's proposition that waves of light exert pressure in the direction of their transmission, as proved in a certain case by Boltzmann. He deduced, under certain assumptions, a formula for the calculation of temperature based upon a determination of maximal energy.
Royal Academy of Sciences, March 25.-Prof. van de Sande Bakhuysen in the chair.-Mr. Pekelharing spoke of the peptone of Kühne. Some years ago he argued there was not a real difference between the substances called peptone, and the substance called propeptone or hemialbumose. The researches of Kühne and his disciples afterwards proved that what was called peptone by Schmidt-Mülheim and by Salkowski, contained albumose. But it was not proved by Kühne that the substance called by himself peptone was really free from albumose. Out of a solution of Kühne's peptone, saturated with ammoniumsulphate, there can be precipitated by metaphosphoric acid, and more fully by trichloracetic acid, a substance which has the properties of albumose. It gives the biuretreaction, it is precipitated, the reaction may be acid, neutral, or alkaline, by ammoniumsulphate, it is precipitated by picrinic acid, and, in acid solution, by saturation with natriumchlorid. So it is clear that there is no ground for believing with Kühne that the substance called by him peptone is a substance sui generis, and not an impure albumo e.-Mr. Bakhuis Roozeboom dealt with the cryohydrates in systems of two salts. Three cases are to be considered. The first is that the two salts may exist without combination. Then there is a cryohydratic point in which the two salts A and B exist with ice next the
solution. This point is a minimum temperature. Besides, there are two ciyohydratic lines, representing the series of solutions which may exist with ice and A or ice and B as solids. In the other cases when A and B form a double salt D, there are two cryohydratic points, one for the solution in equilibrium with ice + D + A, the other for ice + D + B; and three cryoce + A, ice + B. When the double salt is soluble without hydratic lines for the solutions in equilibrium with ice + D, decomposition, the two cryohydratic points are both minimum temperatures, and therefore there must exist a maximum temperature on the line for ice + D; this maximum relates to the solution which presents the same relation A/B as in the double salt. All these conclusions may be deduced from thermoe dynamical rules; they were confirmed in experimental research by Mr. Schreinemakers.
BOOKS, PAMPHLETS, and SERIALS RECEIVED. BOOKS.-Carlsbad, a Medico-Practical Guide: Dr. E. Kleen (Putnam).— Louis Agassiz, his Life and Work: Dr. Holder (Putnam).-Die Natürliche Auslese beim Menschen: O. Ammon (Jena, Fischer).-Public Health Laboratory Work: H. R. Kenwood (Lewis).-Annual Statement of Works carried out by Public Works Department (Sydney, Potter).- The Principles of Agriculture: G.Fletcher (Derby, Central Educational Company). - Science et Religion: T. H. Huxley (Paris, Bailllère).-Au Bord de la Mer : Dr. E. L. Trouessart (Paris, Baillière).-Conférences Scientifiques et Allocutions-Constitution de la Matière: Lord Kelvin. Traduites et Annotées sur la Deuxième Edition: P. Lugol and M. Brillouin (Paris, Gauthier. Villars). - Premiers Principes d'Électricité Industrielle: P. Janet (Paris, Gauthier-Villars).-The Great Barrier Reef of Australia: W. Saville-Kent (W. H. Allen).
PAMPHLETS.-Meteorological Results deduced from Observations taken at the Liverpool Observatory during the Years 1889, 1890 1891 (Liverpool). -On the Effects of Urban Fog upon Cltivated Plants: Prof. F. W. Óliver (Spottiswoode).-The Fundamental Hypotheses of Abstract Dynamics: Prof. J. G. MacGregor.-II Clima di Torino: G. B Rizzo (Torino, Clausen).— On the Application of Interference Methods to Spectroscopic Measurements: A. A. Michelson (Washington, Smithsonian Institution).-Recreation W. Odell (Torquay, Iredale).
SERIALS. Journal of the Chemical Society, April (Gurney and Jackson). Annalen des k. k. Naturhistorischen Hofmuseums, Band viii No. 1 (Wien, Holder).-Timehri, No. xxii. (Stanford)-Notes from the Leyden Museum, vol. xv. No. 2 (Leyden, Brill).-L'Anthropologie, tome iv. No. 1 (Paris, Masson). Journal of the Royal Microscopical Society, April (Williams and Norgate).-The Asclepiad, No. 37. vol. x. (Longmans).- Records of the Geological Survey of India, vol. xxvi. Part 1 (Calcutta).
DIARY OF SOCIETIES.
THURSDAY, APRIL 27.
ROYAL SOCIETY, at 4.30.-On the Results of an Examination of the
FRIDAY, APRIL 28.
PHYSICAL SOCIETY, at 5.- Experiments on the Viscosity of Liquids: Prof.
at 7.30.-Fire-Risks of Electric
ROVAL INSTITUTION, at 9.-The Transmission of a Nervous Impulse: Prof.
SATURDAY, APRIL 29.
ESSEX FIELD CLUB (at Ilford), at 7.-On Mimicry in Lepidoptera and the
MONDAY, MAY 1.
SOCIETY OF ARTS, at 8.-Some Masters of Ornament: Lewis Foreman
SOCIETY OF CHEMICAL INDUSTRY, at 8.-The Gassification of Coal and
TUESDAY, MAY 2.
SOCIETY OF ARTS, at 8.-Russian Industrial Art: E. Delmar Morgan. ZOOLOGICAL SOCIETY, at 8.30.-Further Notes on the Monkeys of the Genus Cercopithecus: P. L. Sclater, F R.S.-Contributions to the Study of Mammalian Dentition; Part I., Macropodidae: M. F. Woodward.— On the Atrium and Prostate of the Oligochatous Worms: F. E. Beddard.
INSTITUTION OF CIVIL ENGINEERS, at 8.-Monthly Ballot for Members.Mining and Ore Treatment at Broken Hill, New South Wales: M. B. Jamieson and John Howell.
ROYAL INSTITUTION, at 3.-Modern Society in China: Prof. R. K. Douglas.
WEDNESDAY, MAY 3
SOCIETY OF ARTS, at 8.-Practical Electric Problems at Chicago: Prof. Silvanus P. Thompson, F. R.S.
THURSDAY, MAY 4.
ROYAL SOCIETY, at 4.30.
CHEMICAL SOCIETY, at 8.-Ballot for the Election of Fellows.-Hydrates
INSTITUTION OF CIVIL ENGINEERS, at 8.-The First James Forrest Lecture-The Interdepender.ce of Abstract Science and Engineering: Dr. William Anderson, F.R.S.
ROYAL INSTITUTION, at 3.-The Atmosphere: Prof. Dewar, F.R.S.
FRIDAY, MAY 5.
CHEMICAL SOCIETY, at 8.-Hofmann Memorial Meeting-Address by Right Hon. Lord Playfair, F.R.S.; Sir F. A. Abel, F.R.S.; W. H. Perkin, F.R.S.
ROYAL INSTITUTION, at 9.-Fogs, Clouds, and Lightning: Shelford Bidwell, F.R.S.
SATURDAY, MAY 6.
ROYAL INSTITUTION, at 3.-Johnson and Milton: Dr. Henry Craik, C.B.
Now Ready, Profusely Illustrated, Price 7s. 6d.
UNIVERSITY MANUAL OF
London: Baillière, Tindall, & Cox, King William Street, Strand
The Great Barrier Reef of Australia, represented by a vast rampart of coral origin, extending for no less a length than twelve hundred miles from Torres Straits to Lady Elliot Island on the Queensland coast, takes rank among the most notable of the existing wonders of the world. Built up by the direct and indirect agency of soft-fleshed polyps of multitudinous form and colour, it encloses betwixt its outer border and the adjacent mainland a tranquil ocean highway for vessels of the heaviest draught. To the naturalist, and more particularly to the marine biologist, the entire Barrier area is a perfect Eldorado, its prolific waters teeming with animal organisms of myriad form and hue representative of every marine zoological group.
The author's qualifications for the task he undertakes are emphasised through the circumstance of his having been occupied for the past eight years as Inspector and Commissioner of Fisheries to various of the Australian Colonies, the three later years having been devoted more exclusively to investigating and reporting to the Queensland Government upon the fishery products of the Great Barrier District.
A prominent feature in this work will consist of photographic views of coral reefs of various construction and from diverse selected localities, together with similar and also coloured illustrations and descriptions of the living corolla, coral polyps, and other marine organisms commonly associated on the reefs. These photographic illustrations taken by the author are, from both a scientific and an artistic standpoint, of high intrinsic merit and also unique in character, representing, in point of fact, the first occasion on which the camera has been employed for the systematic delineation of these subjects.
London: W. H. ALLEN & CO., LTD., 13 Waterloo Place, Publishers to the India Office.
An Illustrated, Priced, and Descriptive Catalogue of the Instruments of Science which are used in teaching and demonstrating every branch of Physical Science, as well as of the Instruments which are used in Original Research and in the applications of Science to Technical Industries and Pursuits. PRICE TO NON-CUSTOMERS, 2s. 6d. POST FREE.
NEW WORK BY PROFESSOR MILNES MARSHALL.
A Text-book for Students and Practitioners.
VERTEBRATE EMBRYOLOGY. MII NES MARSHALL, M.D., D.Sc., M.A., F.R.S., Professor in the Victoria University; Beyer Professor of Zoology in Owens College; late Fellow of St. John's College, Cambridge.
London: SMITH, ELDER, & CO., 15 Waterloo Place.
Mr. HENSON has just received some good Groups of Japanese Stibnite, interesting Quartz Crystals inclosing Rutile and other Substances, and a Very Fine Rock Crystal Ball, 4 inches diameter, perfectly free from flaws, small Crystal Balls, with inclosures, Rock Crystal Carvings. &c., &c.; Crystallised Hydrargillite, Bertrandite, Polybasite, Diamonds, Chalcotrichite, Arizona, Yellow Terminated Beryls, Geikielite, and Yttrotantalite. Diatomaceous Earth from Hakodati Japan.
F. H. BUTLER, M.A. Oxon., Assoc. R. S. Mines.
NATURAL HISTORY AGENCY,
158 BROMPTON ROAD, LONDON. Dealer in Rocks, Minerals, Fossils, and other Objects of Scientific Interest.
Collections of Rocks, Minerals, Fossils, or Recent Shells furnished in accordance with special requirements. SCHOOL COLLECTIONS of Sedimentary and Igneous Rocks, 35 specimens of fair size in case with divisions, IOS. Rabbits and other objects for Biological Study supplied. Card Trays and Glass-topped Boxes of any required dimensions made promptly to order. Sections of Shells and general Lapidary's Work executed. Micro RockSlides new to stock-Schistose Elæolite-Syenite, Norway; Dolerite, Rowley; Porphyritic Pitchstone, Beinn Shiant; and Sanidine Trachyte, Gleichenberg.
COLLECTIONS OF MINERALS,
For the Use of Scudents, Science Teachers, Prospectors, &c., and to
50 Specimens, 10s. 6d.; 100 do., 21s.; 200 do., 42s. New Price List of Minerals, Rocks, and Stratigraphical Seriesof Fossils Post Free.
ROCK SECTIONS for the MICROSCOPE from 1s. 6d. each, Post Free
CABINETS, GLASS-CAPPED BOXES, TRAYS, HAMMERS, &c.
THOMAS D. RUSSELL,
78 NEWGATE STREET, LONDON, E.C.
When this Ink is used writing
BEST DRAPER'S INK (DICHROIC)
May be had from-all Stationers.
Can be obtained in London, through Messrs. BARCLAY & SONS, Farringdou
BEWLEY & DRAPER (Limited), Dublin.
LIVING SPECIMENS FOR THE
Volvox globator, Epistylis flavicans, Stentor coeruleus, Spongilla fluviatilis, Brachionus pala, young Colonies of Cristatella mucedo, and other beautiful objects Amoeba, Hydra, Vaucheria, and other types (Animal and Vegetable) for Students. Specimen Tube, with Drawing and Description. One Shilling, Post Free.
T. E. BOLTON,
FARLEY ROAD, MALVERN LINK.
THE ENTOMOLOGIST'S MONTHLY
Price Sixpence, Monthly.
Edited by C. G. BARRETT, G. C. CHAMPION, F.Z.S.. J. W. DOUGLAS
This Magazine, commenced in 1864, contains standard articles and notes on all subjects connected with Entomology, and especially on the Insects of the British Isles.
Subscription-Six Shillings per Annum, post free.
London: GURNEY & JACKSON (Mr. Van Voorst's Successors),
N. B.-A Second Series was commenced with the Number for January, 1890
For BAD LEGS, BAD BREASTS, OLD WOUNDS, SORES and
HARVEY & PEAK,
By Appointment to the Royal Institution of Great Britain.
COMBINED AMMETER AND VOLTMETER FOR LABORATORY PURPOSES,
Catalogue of 340 Illustrations by post, 6d.
MESSRS. MACMILLAN & CO.'S BOOKS FOR THE COUNTRY.
FORTY YEARS IN A MOORLAND PARISH. Reminiscences and Researches in Danby-in-Cleveland. By Rev. J. C. ATKINSON, D.C.L., Canon of York and Incumbent of the Parish. With Maps and Illustrations. Extra Crown 8vo. 8s. 6d. net. Illustrated Edition. 125. net.
WALKS, TALKS, TRAVELS, AND EXPLOITS OF TWO SCHOOLBOYS. A Book for Boys. By the same Author. With Illustrations. New Edition. Crown 8vo. 35. 6d.
PLAYHOURS AND HALF-HOLIDAYS; or, Further Experiences of two Schoolboys. By the same Author. New Edition. Illustrated by COLEMAN. Crown 8vo. 3s. 6d.
NATURAL HISTORY AND ANTIQUITIES OF SELBORNE. By GILBERT WHITE. With Notes by FRANK BUCKLAND, a Chapter on Antiquities by LORD SELBORNE, and New Letters Illustrated by P. H. DELAMOTTE. New and Cheaper Edition. Crown 8vo. 6s.
TALES OF THE BIRDS. By W. WARDE FOWLER.
BRYAN HOOK. Second Edition. Crown 8vo. 3s. 6d.
With Illustrations by
A YEAR WITH THE BIRDS. By the same Author. With Illustrations by
BRYAN HOOK. Third Edition, enlarged. Crown 8vo. FLOWERS, FRUITS, AND LEAVES. By Sir JOHN LUBBOCK, Bart., F.R.S., M.P., D.C.L., LL.D. With numerous Illustrations. Crown 8vo. 45. 6d. ON BRITISH WILD FLOWERS, CONSIDERED IN RELATION TO INSECTS. By the same Author. With numerous Illustrations. Crown 8vo. 4s. 6d. [Nature Series. ON THE ORIGIN AND METAMORPHOSES OF INSECTS. By the same Author. With numerous Illustrations. Crown 8vo. 35. 6d. [Nature Series.
IN A HAMPSHIRE VILLAGE.
AN OLD WOMAN'S OUTLOOK CHARLOTTE M. YONGE. Crown 8vo. 35. 6d. SPEAKER. "The book has a distinct charm of its own." ACADEMY.-"Miss Yonge is at her best in the word pictures of the downs, woods, and lanes of her home; while her reminiscences of social life, and of the improvement which has in the last fifty years overtaken village life, are most interesting and valuable. . . . This Outlook, with its intense love of birds and flowers, and its careful study of human life in the country, will charm all who are like-minded, and, as the authoress hopes, assist others to make the most of their surroundings, so as to find no country walk devoid of the homely delights that sustain and lift up the spirit."
SPECTATOR.-"Full of attractive matter."
THE HERB OF THE FIELD.
By the same Author. Reprinted from
"Chapters on Flowers" in the Magazine for the Young. Revised and corrected. Crown 8vo. 5s. MADAME HOW AND LADY WHY; or, First Lessons in Earth Lore for Children. By CHARLES KINGSLEY. With numerous Illustrations. Crown 8vo. 35. 6d.
PROSE IDYLLS, NEW AND OLD. By the same Author Crown 8vo.
GLAUCUS; or, The Wonders of the Shore. By the same Author. With Coloured
HANDBOOK OF FIELD AND GENERAL ORNITHOLOGY. A Manual of the Structure and Classification of Birds. With Instructions for Collecting and Preserving Specimens. By ELLIOTT COUES, M.A., M.D., Ph.D., Member of the National Academy of Sciences, &c., &c. Profusely Illustrated. 8vo.
NATURE.-"We know of no volume likely to be more useful to the student who wishes to become acquainted with birds. No other manual that we are acquainted with exactly takes its place or contains such a well arranged mass of useful and generally correct information on this subject."
THE STUDENT'S FLORA OF THE BRITISH ISLANDS. By Sir J. D. HOOKER, K. C.S.I., C. B., M.D., D.C.L., LL.D., F. R.S., F.L.S., F.G.S. Third Edition, Globe 8vo.
MACMILLAN AND CO., LONDON.
MICROSCOPES AND APPARATUS.
WATSON & SONS' VAN HEURCK MICROSCOPE
WATSON & SON'S perfected form of FINE ADJUST-
Primordial Utricle in Seed of Maize
Patent Safety Handles.
Patent Pendulum Governors.
Crossley's Patent Oil Engines.
CROSSLEY BRO S., Ltd.,
OVER 800 ENGINES always in hand
Change Speed Governors.
Patent Cataract Governors.
Patent Antifluctuating Gas Bags.
60 Prize Medals Awarded to the Firm. BE CAREFUL TO ASK FOR FRY'S PURE CONCENTRATED COCOA.
PERKEN, SON, AND
WRITE FOR OUR CATALOGUE. IT IS SENT POST FREE.
"OPTIMUS" UBIQUE CAMERA. İ
printed by RICHARD CLAY AND SONS, LIMITED, at 7 and 8 Bread Street Hill, Queen Victoria Street, in the City of London, and Published by MACMILLAN AND Co., at 29 Bedford Street, London. W.C., and 112 Fourth Avenue, New York.-THURSDAY, April 27, 1893