SCIENTIFIC WORTHIES. The following is a list of the Portraits that have appeared in the above Series: MICHAEL FARADAY. THOMAS HENRY HUXLEY. JOHN TYNDALL. GEORGE GABRIEL STOKES. SIR CHARLES WHEATSTONE. SIR JOSEPH DALTON HOOKER. WILLIAM HARVEY. SIR GEORGE B. AIRY. JEAN BAPTISTE ANDRÉ DUMAS. SIR RICHARD OWEN. SIR C. W. SIEMENS. JOHN COUCH ADAMS. JAMES JOSEPH SYLVESTER. DMITRI IVANOWITSH MENDELEEFF. Proof impressions of these, printed on India paper, may be had from the Publishers, price 5s. each, or the Set of 26 Portraits in a Handsome Portfolio for £6 15s. od., carriage paid. THE PORTFOLIO MAY BE HAD SEPARATELY, PRICE 65. OFFICE OF "NATURE," 29 BEDFORD STREET, STRAND. Excellent Copies of the actual, natural Handwriting, also of Drawings, Music, even of elaborate Sketches, Programmes, Plans (up to Double-Elephant size), Shorthand, and Type-Writing, are easily, quickly, and cheaply produced by the AUTOCOPYIST Very fluid ink, used with ordinary pen and paper. Auto-Circulars On the 1st of every Month. JOURNAL OF BOTANY, BRITISH AND FOREIGN. Edited by JAMES BRITTEN, F.L.S., British Museum. CONTENTS:-Original Articles by leading Botanists.-Extracts, and Notices of Books and Memoirs.-Articles in Journals.-Botanical NewsProceedings of Societies. Price 18. 3d. Subscription for One Year, payable in advance, 1. London: WEST, NEWMAN, & CO., 54 Hatton Garden, E.C HARVEY & PEAK, 6 CHARING CROSS ROAD, W.C. MESSRS. MACMILLAN AND CO.'S NEW BOOKS. A New Book by Sir Charles Dilke, Bart. PROBLEMS OF GREATER BRITAIN. BY THE RIGHT HON. SIR CHARLES DILKE, BART. This is in no sense a new edition of the well-known "Greater Britain." That was a record of travel, which, though still in lemand, is necessarily in some points antiquated. Not seeing his way to incorporate new facts or correct old statements in such a way as to produce a satisfactory result, Sir Charles Dilke thought it best to produce an entirely new book upon the same subjects as those treated in the original work, but dealt with from the point of view of political and social observation and comparison, rather han from that of descriptive sight-seeing. The new book, therefore, is not a book of travel, but a treatise on the present position of Greater Britain, in which special attention has been given to the relation of the English-speaking countries with one another, and comparative politics of the countries under British government. NOW READY, New and Cheaper Edition, in 2 Vols., Extra Crown 8vo, 25s. THE AMERICAN COMMONWEALTH. By JAMES BRYCE, M.P., D.C.L., Regius Professor of Civil Law in the University of Oxford, Author of "The Holy Roman Empire." ART I-The NATIONAL GOVERNMENT. PART II.-The STATE GOVERNMENTS. PART IV.-PUBLIC OPINION. PART V.-ILLUSTRATIONS AND REFLECTIONS. THE LIBRARY REFERENCE ATLAS OF THE WORLD. A Complete Series of 84 Modern Maps. By JOHN BARTHOLOMEW, F.R. G. S. With Geographical Index to 100,000 places. HalfMorocco, Gilt Edges. Folio, £2 12s. 6d. net. **This work has been designed with the object of supplying the public with a thoroughly complete and accurate atlas of Modern graphy, in a convenient reference form, and at a moderate price. A NEW BOOK BY MR. ALFRED RUSSEL WALLACE. THIRD EDITION. DARWINISM; an Exposition of the Theory of Natural Selection, with some of its Applications. By ALFRED RUSSEL WALLACE, LL.D., D.C.L., F. L. S., &c., Author of "The Malay Archipelago," The Geographical Distribution of Animals," "Island Life," &c. With Portrait and Map. Third Edition. Crown 8vo, 95. NOW READY, WITH ILLUSTRATIONS AND MAPS. TRAVELS IN INDIA OF JEAN BAPTISTE TAVERNIER, BARON OF AUBONNE Translated from the original French Edition of 1676, with a Biographical Sketch of the Author, Notes, Appendices, &c., by V. BALL, LL.D., F.R.S., F.G. S., Director of the Science and Art Museum, Dublin, Author of "Jungle Life in India,' ," "The Economic Geology of India," &c. With Illustrations and Maps. 2 Vols., Medium 8vo, 12 25. LD AGE. The Results of Information received respecting nearly Nine Hundred Persons who had attained the Age of Eighty Years, including Seventy-four Centenarians. By GEORGE MURRAY HUMPHRY, M.D., F. R. S., Professor of Surgery in the University of Cambridge. Crown 8vo, 45. 6d. SIXTH AND REVISED EDITION. A TREATISE ON DYNAMICS OF A PARTICLE. With numerous Examples. By PETER GUTHRIE TAIT, M.A., Hon. Fellow of St. Peter's College, Cambridge, Professor of Natural Philosophy in the University of Edinburgh; and the late WILLIAM JOHN STEELE, B. A., Fellow of St. Peter's College, Cambridge. Sixth Edition, carefully revised. Crown 8vo, 12s. SECOND EDITION, REVISED AND GREATLY ENLARGED. ABSOLUTE MEASUREMENTS IN ELECTRICITY AND MAGNETISM. By ANDREW GRAY, M. A., F.R.S.E., Professor of Physics in the University College of North Wales. Second Edition. Revised and Greatly Enlarged. Fcap. 8vo, 5s. 6d. SECOND EDITION, REVISED. APPLIED MECHANICS: an Elementary General Introduction to the Theory of Structures and Machines. By JAMES H. COTTERILL, F. Ř.S., Associate Member of the Council of the Institution of Naval Architects, Associate Member of the Institute of Civil Engineers, Professor of Applied Mechanics in the Royal Naval College, Greenwich. Second Edition, Revised. Medium 8vo, 18s. THE CHEMISTRY OF PHOTOGRAPHY. By RAPHAEL MELDOLA, F.R S., Professor of Chemistry in the Technical College, Finsbury, City and Guilds of London Institute for the Advancement of Technical Education. Crown 8vo, 6s. (Nature Series.) The Photographer's World says:-"This work will be welcomed by all those who wish to know the 'why and the wherefore' of photographic processes. . . The scope of the work is very wide.” The Camera says:-"We cannot imagine a more valuable or instructive aid to a photographer than to go carefully through this , and repeat the many experiments described. Nothing seems to have been omitted, and the very newest processes are fully all with. Even to those who do not care to undertake a careful study of the book it will prove of immense value as a work of MACMILLAN AND CO., LONDON. CLARENDON PRESS NEW AND STANDARD ANDER ECKER, Professor in the University of Freiburg. Trans- Royal 8vo, half-morocco, 311. 6d. LECTURES ON THE PHYSIOLOGY OF PLANTS Royal 8vo, Cloth, with Maps and Illustrations. Vol. I. Chemical and Physical. 255. Vol. II. Physical and Stratigraphical, with New Geological Ma of Europe. 36s. The Map of Europe, on Roller, or in Cloth Case, separately. gr. "Stands out from the long range of modern treatises."-Academy. Royal 8vo, Cloth, 365. FORMS OF ANIMAL LIFE. A Manual of Comparative "A text-book of zoology, in many respects the most comprehensive 1 has yet appeared in the English language."-Oxford Magazine. FULL CLARENDON PRESS CATALOGUES SENT FREE ON APPLICATION. LONDON: HENRY FROWDE, CLARENDON PRESS WAREHOUSE, AMEN CORNER. E.C. JUST PUBLISHED. NEW EDITION OF WATSON AND SONS' MICROSCOPES, OBJECTIVES, & ACCESSORY APPARATUS. It contains Instruments suitable for every class of investigation, many of quite new design, and all fitted with every modern improvement. Everyone interested in Microscopy, and especially intending purchasers of Instruments, should see this new Catalogue. FORWARDED POST FREE ON APPLICATION TO W. WATSON & SONS, Opticians to Her Majesty's Government, 313 HIGH HOLBORN, LONDON, W.C., AND 251 SWANSTON ST., MELBOURNE, AUSTRALIA R ESTABLISHED 1837. EMINGTON STANDARD TYPEWRITER. A WORD TO BUSINESS MEN. You cannot afford to do your writing in the old way. The work of our machines is plain and business-like, obviating all mistakes in reading. Several copies can be made at one writing by the use of carbon paper. Excellent letterpress copies can be taken. Our improved machine has been adopted in all the Departments of the Government Service, and is being very generally introduced by all leading business houses. Does not this argue that the Typewriter should be worth something to you? The Machines can be furnished with special key-boards to suit any purchaser's line of business. Printed by RICHARD CLAY AND SONS. LIMITED, at 7 and 8 Bread Street Hill. Queen Victoria Street, in the City of London, and Published 3. ACMILLAN AND CO., at the Office, 29 and 50 Bedford Street, Covent Garden.-THURSDAY, January 23 1790. Sales by Auction. MESSRS. T. COOKE & SONS have received Instructions from the Executors of the late JAMEs WigglesWORTH. Esq., to offer for Sale the OBSERVATORY and INSTRUMENTS erected by him at New Parks House, Scarborough, in 1885, consisting of A HEMISPHERICAL DOME, 30 feet diameter, of T and angle iron framework, covered with papier-maché, so constructed that it may be removed without injury. The Dome is of Messrs. Cooke's latest design, giving a perfectly clear zenith, and the revolution is effected by rack and pinion. An EQUATORIAL TELESCOPE, having an object-glass of 15 inches clear aperture, guaranteed of the highest quality, the mounting also being of Messrs. Cooke's latest design and best workmanship. Large R.A. and Decl. circles divided on silver, 3-inch finder, iris diaphragm, and complete battery of eye-pieces, solar spectroscope, &c., &c. LARGE MOVABLE OBSERVING STAGE. The Price of the whole Observatory and Instruments at Scarborough, guaranteed in perfect working order, and almost equal to new (having been always under the care of Messrs. Cooke). £2000. Address MESSRS. T. COOKE & SONS, BUCKINGHAM WORKS, YORK, who will supply Photos of the Observatory and Instruments, and any further particulars, on application. MESSRS. T. COOKE & SONS have also for Sale the following Second-hand Instruments : Price A 5-INCH EQUATORIAL TELESCOPE, the Property of G. J. NEWBEGIN, Esq., of Thorpe, Norwich, complete with driving-clock, R. A., Decl., and position circles divided on silver, and set of eye-pieces, in perfect working order, and can be seen at Buckingham Works. £133 10s. This Instrument is for sale owing to Messrs. Cooke having erected a much larger Observatory and Equatorial for Mr. Newbegin at Thorpe. The Copper Dome covering the 5-inch Equatorial is also for disposal, and is on view at Thorpe. LIVING SPECIMENS FOR THE MICROSCOPE. GOLD MEDAL awarded at the FISHERIES EXHIBITION to THOMAS BOLTON, 83 CAMDEN STREET, BIRMINGHAM, Who last week sent to his subscribers Surirella bifrons, with sketch 2: description. He also sent out Argulus foliaceus, Corethra. Trout a Philodina roseola, Floscularia, Corethra plumicornis, Melicerta ringen Stephanoceros; also Amoeba, Hydra, Vorticella, Crayfish, Dog-F Amphioxus, and other Specimens for Biological Laboratory work. Weekly Announcements will be made in this place of organisms T. E is supplying. Specimen Tube, One Shilling, post free. Twenty-six Tubes in Course of Six Months for Subscription of £1 12, or Twelve Tubes for 10s. 6d. Portfolio of Drawings, Eleven Parts, 11. each. TICKETS FOR THE COURSE, FIVE SHILLINGS, TO BE HAD OF J. HERBERT HODD, HON. SEC., 30 HATTON GARDEX, E.C. CITY AND GUILDS OF LONDON INSTITUTE for the ADVANCEMENT OF TECHNICAL EDUCATION. CENTRAL INSTITUTION. A Course of Ten Lectures on METHODS of ANALYSIS as App to the CONSTITUTION of CARBON COMPOUNDS, will be deliver by Prof. H. E. ARMSTRONG, F.R.S., on MONDAYS, at 4.30 p commencing January 27. Mr. HOLLAND CROMPTON will deliver a COURSE of Ten Lectins on The THEORY of ELECTROLYSIS and the NATURE of CHEMI CAL CHANGE in SOLUTION, on FRIDAYS, at 4-30 p.m., commencin January 24. Fee for each Course 10s. Particulars of and Tickets for the Courses may be obtained on applican to the DEAN, Central Institution, Exhibition Road, S.W. JOHN WATNEY, MESSRS. MELLERSH will Sell by Auc- GUY'S HOSPITAL MEDICAL SCHOOL tion, on the premises, on WEDNESDAY, March 5, 1890, and following day, at 11 o'clock punctually, the nearly complete collection of BRITISH BIRDS (beautifully stuffed, in cases, with painted scenery on back panels in keeping with the habitat of each species), as made and set up by the late Mr. W. STAFFORD, the well-known Naturalist of this town. Also a number of CURIOSITIES and other Articles of Virtu, comprising excellent specimens of old Weapons, Indian Spears and Clubs, several Pilgrims' Badges, Leprosy Clappers, Tear-Bottle (period, Edward the Confessor), Antique and Rare Keys, Ancient Brass Boxes. Brass Roman Figures, Roman Lamps and Pottery, Ancient British Pottery, Queen Anne ditto, Roman Vases, valuable Ancient Brass AxeHeads, &c. A good collection of Neolithic Flints, Fossils, Butterflies, Beetles, British Birds' Eggs, Alligator and Crocodile Skins, and many other Rarities; three noble Statuary Eagles, Paintings, Books, and other Effects described in Catalogues. Catalogues (Sixpence each) of Messrs. MELLERSH, Auctioneers, UNIVERSITY OF LONDON PRELIMINARY SCIENTIFIC (M.B.) EXAMINATION. Instruction is given in all the subjects of the above Examination at GUY'S HOSPITAL during the Winter and Summer Sessions. The for the whole Course is Ten Gu neas. The Class is not contined to Stude of the Hospital. For further particulars, apply to the DEAN, Guy's Hospital, Southwark S.E. |