LANDER'S PATENT ANEMOMETER, Records the force of every separate puff of wind, £4 10 0 BAROGRAPH (Aneroid or Mercurial), £4 10 0 Great numbers of these Instruments are now being supplied LANDER & SMITH, Scientific Instrument POLYMETER. An accurate miniature Meteorological Industrial, and Hygienic purposes. Pamphlet, fully describing its many applications, how A.GALLENKAMP & CO., Ltd. 19 & 21 SUN STREET, FINSBURY SQUARE, LONDON, E.C. Supplied with either Fahrenheit MARCONI'S LAMBRECHTS or Centigrade Scale. RADIUM ON HIRE. (Activity 1,800,000 units.) Fluorescent Screen, Electroscope, &c., and Radium Pendant Microscope with Radium, 2/6 Self-Luminous Radium Screen, 5/ Certificates of Radio-activity, 5/- each sample. Post free within United Kingdom. F. HARRISON GLEW, Patentee, 156 Clapham Road, London, S.W. CHEMICALS WIRELESS TELEGRAPH CO. RARE METALS MANUFACTURERS OF Ltd.. High-Class Apparatus for Röntgen Write for Illustrated Price List "H" to the Works : TYSSEN ST., DALSTON, LONDON, N.E. MINERALS For Laboratory, Scientific, and all other COCOA NUT CHARCOAL SPECIALLY PREPARED. HARRINGTON BROS., Chemical Manufacturers and Dealers, 4 OLIVER'S YARD, CITY ROAD, LONDON, E.C. LIQUID AIR AND LIQUID HYDROGEN. Dr. HAMPSON'S AIR-LIQUEFIER is now made to a standard pattern, and numbers are in use in University Laboratories and elsewhere in various countries. The whole apparatus is neat and compact and its parts very easily moved; the Liquefier, without stand, being a cylinder 17 inches high and 8 inches in diameter. It begins to liquefy air in from 6 to 10 minutes after the admission of air at from 150 to 200 atmospheres pressure, making over a litre of liquid per hour. It requires no auxiliary refrigerant and produces a perfectly clear liquid which requires no filtering. The operator has only one gauge to watch and one valve to control. HYDROGEN LIQUEFIER to the designs of Dr. MORRIS W. TRAVERS for use in conjunction with Air-Liquefier. For Prices and Particulars apply to the Sole Makers :BRIN'S OXYGEN COMPANY, LIMITED, ELVERTON STREET, WESTMINSTER, S. W. MACMILLAN & CO.'S BOOKS FOR STUDENTS OF GENERAL BIOLOGY AND PHYSIOLOGY. A IN BIOLOGY. By Prof. T. JEFFERY PARKER, B.Sc., COURSE OF ELEMENTARY INSTRUCTION IN PRACTICAL BIOLOGY. By Prof. T. H. HUXLEY, F.R.S., assisted by H. N. MARTIN, F.R.S. Third Edition, revised by the late G. B. HOWES and D. H. SCOTT, D.Sc. Crown 8vo. 10s. 6d. ATLAS OF PRACTICAL ELEMENTARY ZOOTOMY. (Being a Revised Edition of the Zoological Portion of the Atlas of Fractical Elementary Biology.) By the late G. B. HOWES, LL.D., F.R.S., Professor of Zoology, Royal College of Science, London. With a Preface to the First Edition by T. H. HUXLEY. 4to. IOS. net. The LIVING ORGANISM. An Introduction to the Problems of Biology. By ALFRED EARL, M.A. Crown 8vo. 6s. MICRO-ORGANISMS AND FER MENTATION. By A. JÖRGENSEN. Translated by A.K. MILLER and E. A. LENNHOLM. Svo. IOS. net. ORGANIC EVOLUTION AS THE RESULT OF THE INHERITANCE OF ACQUIRED CONSIDERED IN RELATION TO INSECTS. By The DEVELOPMENT of the FROG'S REGENERATION. 75. net. By T. H. MOR GAN, Ph. D. Illustrated. 8vo. 12s. 6d. net. EVOLUTION AND ADAPTATION. By T. H. MORGAN, Ph. D. 8vo. 12s. 6d. net. AN OUTLINE OF THE THEORY OF ORGANIC EVOLUTION. By M. M. METCALF, Ph.D. 8vo. 10s. 6d. net. THE CELL IN DEVELOPMENT AND INHERITANCE. By E. B. WILSON, Ph.D. 8vo. 14s. net THE DYNAMICS OF LIVING MATTER. By Prof. JACQUES LOEB. 8vo. 12s. 6d. net. EVOLUTION AND MAN'S PLACE IN NATURE. By Prof. H. CALDERWOOD, LL.D. EXPERIMENTAL MORPHOLOGY. K.C.B., M.D. With Illustrations. Pott 8vo. 15. [Science Primers. TEXT-BOOK of PHYSIOLOGY. By Sir MICHAEL FOSTER, K.C.B., M.D. With Il· lustrations. Part I. Book I. Blood: The Tissues of Movement, the Vascular Mechanism. Sixth Edition. 10. 6d. Part II. Book II. The Tissues of Chemical Action, with their Respective Mechanisms: Nutrition. Fifth Edition, largely revised. 10s. 6d. Part III. Book III. The Central Nervous System. Seventh Edition, largely revised. 10. 6d. Part IV. Remainder of Book III. The Senses, and some Special Muscular Mechanisms. Sixth Edition, revised. Part V. Book IV. The Tissues and Mechan isms of Reproduction. New edition in breparation. Appendix. By A. S. LEA. 75. 6d. HANDBOOK OF PHYSIOLOGY. For Students and Practitioners of Medicine. By AUSTIN net. A COURSE OF ELEMENTARY PRACTICAL PHYSIOLOGY AND HISTOLOGY. By Sir M. FOSTER, K.C.B., and J. N. LANGLEY, D.Sc. Seventh Edition, edited by J. N. LANGLEY, D.Sc., F.R.S., and L. E. SHORE, M.D. Crown 8vo. 75. 6d. PRACTICAL HISTOLOGY. By J. N. LANGLEY, M. A. Crown 8vo. 65. ANATOMY AND PHYSIOLOGY FOR NURSES. By D. C. KIMBER. 8vo. 10. net. GENERAL PHYSIOLOGY. By Professor MAX VERWORN, M.D., Ph. D. Translated by FREDERIC S. LEE, Ph.D. With 285 Illustrations Medium 8vo. 155. net. STUDIES IN PHYSIOLOGY, ANATOMY, AND HYGIENE. By J. E. Peabody, A.M. Crown Svo, 55. net. A TEXT-BOOK of the PHYSIO. LOGICAL CHEMISTRY OF THE ANIMAL BODY, including an Account of the Chemical Changes occurring in Disease. By ARTHUR GAMGEE, M.D., F.R.S. Vol. II., 18s. ELECTRO-PHYSIOLOGY. By Prof. Translated by F. A. WELBY. CRYSTALLOGRAPHY. WATKINS & DONCASTER, Our New Catalogue, XIX., with many illustrations, has just come out (post free on application). The following are included: 1. New Collection of 416 Crystal-models of wood, containing all the crystal forms and combinations represented by illustrations in the 4th ed. of the " Physikalische Kristallographie," by Prof. P. Groth (1905) at Munich £27 10 0 2. Large Collection of 916 Crystal-models of wood to illustrate the crystal forms of the minerals, by Prof. C. Hintze at Breslau. £90 0 0 3. New Collection of 8 Trigonal-Glass-models of Calcite, with the crystallographic axes according to Bravais (Weiss) and with the axes according to Miller, constructed by Prof. J. Beckenkamp at Würzburg £1 15 O 4. New Collection of 450 Crystal-models of pasteboard, systematically arranged according to the 32 classes of symmetry, by Prof. K. Viba at Prague £48 0 0 5. The Planes of Symmetry, 5 models constructed by Prof. K. Vrba at Prague £5 15 O 6. The Optical Wave Surfaces, 4 wire-models constructed by Prof. K. Vrba at Prague £6 8 0 7. The Optical Indicatrix, 3 wire-models by Prof. K. Vrba at Prague £2 5 0 8. The Sciodromes, 5 coloured plaster-models constructed by Prof. F. Becke at Vienna £5 0 0 9. Stands for Crystal-models, various constructions and in various sets. ... Naturalists and Manufacturers of CABINETS AND APPARATUS FOR ENTOMOLOGY, BIRDS' EGGS AND SKINS, AND ALL SPECIAL SHOW-ROOM FOR CABINETS. N.B. For Excellence and Superiority of Cabinets and Apparatus, references 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.) CATALOGUE (102 pp.) POST FREE. CLARKE & PAGE, Specialists in Microscopy, 104 LEADENHALL STREET, LONDON. MICROSCOPIC SLIDES. Marine. Exquisite Mounts. Curious and rare forms of extended zoophites, corals, wing-footed pteropods, siphon-bearing animals, young sea-horses, &c., &c. A stock of over 20,000 slides to select from, including all branches. Full catalogue free. See "NATURE," Jan. 4, '06, page 231. SECOND-HAND MICROSCOPES, &c. Large and varied stock of stands and accessories-leading makers. List free. Collections and Single Specimens of MINERALS, NATURAL CRYSTALS, PRECIOUS STONES, ROCKS & FOSSILS. Cabinets, Geologists' Hammers, Card Trays, Glass Capped Boxes, Wood and Glass Models of Crystals and Precious Stones, Sections of Rocks, and other Apparatus. ~ NEW CATALOGUES POST FREE. THOMAS D. RUSSELL, 78 Newgate Street, LONDON, E.C. LIVING SPECIMENS FOR THE MICROSCOPE. Volvox, Spirogyra, Desmids, Diatoms, Amoeba, Arcella, Actinosphærium, Vorticella, Stentor, Hydra, Floscularia, Stephanoceros, Melicerta, and many other specimens of Pond Life. Price 18. 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 supplied, either living or preserved by the best methods: Sycon; Clava, Obelia, Sertularia; Actinia, Tealia, Caryophyllia, Alcy. onium; Hormiphora (preserved); Leptoplana; Lineus, Amphiporus, Nereis, Aphrodite, Arenicola, Lanice, Terebella; Lepas, Balanus, Gammarus, Ligia Mysis, Nebalia, Carcinus; Patella, Buccinum, Eledone, Pectens Bugula, Crisia, Pedicellina, Holothuria, Asterias, Echinus, Ascidia, Salpa (preserved), Scyllium, Raia, &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 SUBSCRIPTIONS TO "NATURE." £ s. d. To ALL PLACES ABROAD:- £ s. d. Yearly Half-yearly Quarterly 7 6 Yearly Half-yearly Quarterly Quarter Page, or Half a Column 1 15 Half a Page, or a Column 35 Whole Page. 6 6 O O 8 o * The first line being in heavy type is charged for as Two Lines. Cheques and Money Orders payable to MACMILLAN & CO., Limited. OFFICE: ST. MARTIN'S STREET, LONDON, W.C. A NEW EUDIOMETER (WILSON'S PATENT). This Eudiometer is peculiarly adapted for the demonstration of : (a) The volume changes of K interacting gases. (b) Boyle's Law (pressures above and below atmospheric). (c) Charles' Law. PRICE £2 2 0 net. Sole Manufacturers: T&M H B TOWNSON & MERCER. 34 CAMOMILE STREET, LONDON, E.C. A NEW PRISM BINOCULAR THE STEREOSCOPIC COMPANY'S NEW "PRISMA" BINOCULAR is undoubtedly the finest glass ever produced, and has approximately double the illumination of other glasses of equal magnification. PRISMS CAN BE CLEANED BY THE USER. Write for Catalogue No. 12B, Free from THE ELECTROLYTIC RECTIFIERS NEW AND IMPROVED TYPES READY SHORTLY. ALL KINDS OF Electrical Measuring Instruments For Laboratories, &c. THE MERCURY VAPOUR LAMP. FOR THE PRODUCTION OF ULTRA-VIOLET RAYS Made of UVIOL CLASS for Physical and Medical Purposes. per 300 C.P. See Article in Nature, Sept. 21. 1905, page 513. OXYCATHODE TUBES FOR THE PRODUCTION OF CATHODE RAY PHENOMENA, RECTIFICATION, &c., AT LOW PRESSURES. See paper by Prof. J. J. THOMSON, Nature, March 22, 1906. LISTS, &c., POST FREE FROM ISENTHAL & CO., 85 MORTIMER ST., Contractors to LONDON, W. The Admiralty, War, India, and Colonial Offices, &c. SESSION 1906-7. C. E. MÜLLER, ORME & CO., LTD. Contractors to His Majesty's Government, 148 HIGH HOLBORN, LONDON, W.C. Manufacturers of Apparatus for Teaching CHEMISTRY, GLASS BLOWING. PURE CHEMICALS. STUDENTS' SETS OF APPARATUS. LISTS:-Chemical Apparatus-Chemicals-Balances-Assay- LONDON STEREOSCOPIC COMPANY, 106 & 108 RECENT ST., W., or 54 CHEAPSIDE, LONDON, E.C. Frinted by RICHARD CLAY AND SONS, LIMITED, at 7 & 8 bread Street Hill, Queen Victoria Street, in the City of London, and published by MACHILAN AND CO., LIMITED, at St. Martin's Street, London, W.C., and THE MACMILLAN COMPANY, 66 Fifth Avenue, New York.-THURSDAY, July 26, 1906. REYNOLDS & BRANSON, Ltd., NEWTON & CO., Scientific Instrument Makers to H.M. the King and H.R.H. the 3 FLEET STREET, LONDON. PHOTOGRAPHIC LENSES. A SIMPLE TREATISE. By CONRAD BECK and HERBERT ANDREWS. -, Post Free 1/3. This somewhat difficult subject is made clear without the use of mathematics. R. & J. BECK, Ltd., 68 CORNHILL, LONDON. PRACTICAL NOTES ON TELEPHOTOGRAPHY. Free on application to 24 ANEROID BAROMETERS. 21 NEW ILLUSTRATED AND 10000 23 22 9000 REVISED PRICE LISTS The Watch Size Aneroid for foretelling weather and measuring heights. 38 Holborn Viaduct, E.C R. & J. BECK, Ltd., 68 CORNHILL, LONDON. 6000 7000 8000 Branches 45 Cornhill; |
0 Reviews Reviews aren't verified, but Google checks for and removes fake content when it's identified Write review |