Since perspective.-Prof. Blackie read a paper on the most recent phases of Greek literary style. The style of the educated Greek and the popular style were brought into closer correspondence than previously at the commencement of the present century, chiefly through the influence of Coraes. In this paper Prof. Blackie investigates the result of that amalgamation. 1830, the development of the Greek language has been most marked. The higher classical style has been constantly gaining ground, so that popular and literary Greek now differs as little from ancient classical Greek as Scotch does from English; while, previous to the time of Coraes, they were as distinct as present-day English is from the English of Chaucer. The author gives examples of the deviations of the literary and popular Greek of various epochs from ancient Greek, which prove a rapid return to the ancient purity of language. Thus, while in twelve lines of Romaic Greek eighteen or twenty deviations from the pure style may be found, in twelve lines of modern Greek only two or three such deviations appear. In the first five verses of the second chapter of Luke, nineteen deviations occur in the Romaic New Testament, while in the same passage in the English Bible Society's version of 1890 only four are found. In two pages of a recent number of a Greek newspaper only two deviations occur.-Dr. Berry Haycraft com. municated a contribution, by Mr. F. E. Beddard, to the anatomy of Sutroa PARIS. Academy of Sciences, April 19.-M. d'Abbadie in the chair. Calculation of the diminution which is experienced by the mean pressure on a fixed horizontal plane, in the interior of a heavy liquid filling a basin and agitated by certain wave motions, by M. J. Boussinesq.-Note by M. Faye accompanying the presentation of celestial photographs obtained at Heidelberg by Dr. Max Wolf, Director of the Observatory. The photographs commented upon by M. Faye are those recently taken of a part of Cygnus, and that on which the trail of a new asteroid was detected; also a picture showing a shooting-star which crossed the field of observation during exposure. The photographs were taken by means of a portrait-lens 2 inches in diameter On the optical measure of high temperatures, by M. A. Crova.-Researches on the formation of planets and satellites memoir by M. E. Roger, presented by M. Jordan. The author has developed a complex relation connecting the distances of planets from the sun, and also one connecting the distances of planets from their satellites.-Observations of Swift's comet (1892 March 6), made with the Brunner equatorial of Lyons Observatory, by M. G. Le Cadet. Observations for position were made on April 3, 4, 8, 9, 11, and 15.-On differential invariants of a surface with respect to conformable transformations of space, by M. Arthur Tresse.-On the accuracy of comparisons of a mètre à bouts with a mètre à traits, by M. Bosscha.-Researches on the secondary wood of Apetales, by M. C. Houlbert.-On the relations existing between the form and nature of the beds of andalusite at Ariège, by M. A. Lacroix. It appears that at Ariège the form of the andalusite is characteristic in each bed to such an extent that, given a geological map of the region, it is possible to indicate a priori where the mineral would be found, and conversely, given a specimen of andalusite, the geological nature of the bed from which it was taken could be stated with very little chance of The facts described by M. Lacroix are thus as useful to the geologist as to the mineralogist.-On the loess of Turkestan, by M. Guillaume Capus. error. BRUSSELS. Academy of Sciences, March 5.-The following communications were read :-The male of certain Caligides, and a new species of this family, by M. P. J. Van Beneden. The author describes (1) the male of Pandarus Cranchii; (2) the male and female Pandarus affinis, n. sp. ; (3) a new species, Chlamys incisus; and (4) the male of Dinematoura elongata.— Theoretical determination of the radius of the sphere of molecular activity of liquids in general, by M. P. De Heen. The conclusion is arrived at that the radius of the sphere of activity is proportional to the product of surface tension into molecular volume. On the curve in conic sections, by M. Cl. Servais. — Researches on the physiology of respiratory centres, by Dr. Alfred Bienfait. The author adduces evidence to show that a single respiratory centre, isolated by two transverse sections from the accessory respiratory centres, controls the movements of the glottis.-On a new ptomaine obtained by the culture of Bacterium Allii, by Dr. A. B. Griffiths. In a former paper Dr. Griffiths described and named Bacterium Allii-a microorganism found by him. This Bacteria produces a green pigment, soluble in alcohol, and possessing a particular absorption spectrum. In the presence of albuminoids, Bacterium Allir gives rise to a crystallizable ptomaine, which furnishes a chloroplatinate, having the formula, according to analyses, (CH,NHCI) PtCl. The analysis of the base gave the platinate. formula C10H1N, which corresponds to that of chloro 17 BOOKS, PAMPHLETS, and SERIALS RECEIVED. Books.-The Apodida: H. M. Bernard (Macmillan).—Tanganyika: E C. Hore (Stanford).-Epidemics, Plagues, and Fevers: Hon. Rollo Russell (Stanford).-Hand-book of Jamaica, 1892 (Stanford).-A Treatise on Physical Optics: A. B Basset (Bell).-The Landfall of Lief Erikson, A.D. 1000: E. N. Horsf rd (Boston, Damrell and Upham) -A Guide to Electric Lighting: S Bottone (Whittaker).- Elementary Lessons in Heat: S. E. Tillman, 2nd edition (Gay and Bird).-Les Altérations de la Personnalité: A. Binet (Paris, Alcan).-Thermodynamische Studien: J. W. Gibbs, translated by W. Ostwald (Leipzig, Engelmann) -English Botany, supplement to the 3rd edition, Part 1: N. E Brown (Bell).-Progressive Mathematical Exercises, 2nd series: A. T. Richardson (Macmillan). PAMPHLET.-The Wheat Plant, how it Feeds and Grows: W. Carruthurs (also 8 diagrams) (W. and A K. Johnston). SERIALS.-Proceedings of the Rochester Academy of Science, vol. i. Brochures 1 and 2 (Rochester, N Y.)-Brain, Part 57 (Macmillan).Journal of the Bombay Natural History Society, No. 4. vol. vi. (Bombay). -Journal of the Institution of Electrical Engineers, No. 97, vol. xxi. (Spon).-Bulletin of the New York Mathematical Society, vol. i. No. 7 (New York).-Physical Society of London, Proceedings, vol. xi. Part 3 (Taylor and Francis).-Proceedings of the Geologists' Association, vol. xii. (Williams and Norgate)-A Manual of Orchidaceous Plants, Part 8 Part 7 (Stanford) -Journal of the Royal Microscopical Society, April (Veitch).-Notes from the Leyden Museum, vol. xiv Nos. 1 and 2 (Leyden, Brill)-American Journal of Mathematics, vol. xiv. No. 2 (Baltimore). Transactions of the Royal Society of Victoria, vol. ii. Part 2, 1891 (Melbourne).-Report of the Geological Survey of India, vol. xxv. Part I (Calcutta). ZOOLOGICAL SOCIETY, at 8.30.-On the Probable Identity of certain Specimens formerly in the Lidth de Jeude Collection, and now in the British Museum, with those figured by Albert Seba in his "Thesaurus" of 1734: Oldfield Thomas.-On the Brain and Muscular Anatomy of Aulacodus: F. E. Beddard.-On the Systematic Position of Notoryctes typhlops, Stirling Dr Hans Gadow. INSTI UTION OF CIVIL ENGINEERS, at 8.-Monthly Ballot for Members.Electrical Measuring Instruments: James Swinburne. (Discussion.) ROYAL INSTITUTION, at 3.-The Sculpturing of Britain-its Later Stages: Prof. T. G. Bonney, F.R.S. ROYAL SOCIETY, at 4.30. THURSDAY, MAY 5.. CHEMICAL SOCIETY, at 8.-Ballot for the Election of Fellows. ROYAL INSTITUTION, at 3. -The Chemistry of Gases: Prof. Dewar, FRIDAY, MAY 6. GEOLOGISTS' ASSOCIATION, at 8. ROYAL INSTITUTION, at 9-The_Sensitiveness of the Eye to Light and SATURDAY, MAY 7. ROYAL INSTITUTION, at 3.-J. S. Bach's Chamber Music (with many Musical Illustrations): E. Dannreuther. AN ENTIRELY NEW YEAR-BOOK. Just Published, Price 7s. 6d. THE YEAR-BOOK OF SCIENCE. Edited by Prof. BONNEY, F.R.S., and containing contributions by leading Scientific Writers. "We cannot but commend the design of such a work, while the names of Prof. Bonney and the contributors associated with him are a sufficient guarantee for the adequacy of its execution."-Times. A A Prospectus sent Post free on Application. CASSELL & COMPANY, Ltd., Ludgate Hill, London. Fourth Edition, 5s. PROTOPLASM: PHYSICAL LIFE AND LAW. By LIONEL BEALE, F.R.S. HARRISON & SONS, Pall Mall. To Colleges and Schools of Science. Just Published. NEW FEATURE IN SCIENCE TEACHING. Designed by J. J. MILLER, and approved by the leading Professors in Chemistry of London, Edinburgh, Glasgow, and Newcastle as an assistance to Teachers. It consists of a Coloured Diagram, 20" x 26", showing all the connections, from the raw materials to the finished products, in the process of manufacture of Washing Soda, Chloride of Lime, and other Domestic Chemicals. Price is. (Mounted and Varnished, 38.); Explanatory Key, 3d. JOHN HEYWOOD, 2 Amen Corner, London; and Manchester. I. Dr. Weismann's Theory of Heredity as Applied to Plants. By Rev. GEORGE HENSLOW, M. A., F. L. S. II. The Poisonous Secretion of Batrachians. By G. A. BOULENGER, F.Z.S. III. The Evolution of Flat-Fishes. HAM, M.A., F. R.S. E. By J. T. CUNNING IV. V. Ticks. By ALBERT D. MICHAEL, F.L.S. VI. Stigmaria and Sigillaria. By Sir J. WILLIAM DAWSON, C. M.G., F. R. S., and Prof. W. C. WILLIAMSON, LL.D., F.R.S. AN F. H. BUTLER, M.A. Oxon., Assoc. R. S. Mines, HOLLOWAY'S OINTMENT INFALLIBLE NATURAL HISTORY AGENCY, 158 BROMPTON ROAD, LONDON. Dealer in Rocks, Minerals, Fossils, and other Objects of Scientific Interest. Collections or single specimens provided for students of Mineralogy, Geology, Petrography, Metallurgy, Physiography, and Agricultural Chemistry, to illustrate special works or for individual requirements. A great variety of British, European, and American Ores always in stock, also a large selection of Micro-Slides of Typical and Remarkable Rocks, Micro-glass of all sizes, Blowpipe and Dissecting Apparatus, and Cabinets for every class of Natural History objects. An interesting series of specimens exemplifying the Kaolinization of Granite has just been obtained from Cornwall. COLLECTIONS OF MINERALS, ROCKS, OR FOSSILS, For the Use of Students, Science Teachers, Prospectors, &c., and to illustrate the leading Text-books, in Boxes, with Trays. 50 Specimens, 10s. 6d.; 100 do., 21s.; 200 do., 42s. New Price List of Minerals, Rocks, and Stratigraphical Series of Fossils Post Free. ROCK SECTIONS for the MICROSCOPE from 1s. 6d. each, Post Free. CATALOGUES GRATIS. CABINETS, GLASS-CAPPED BOXES, TRAYS, HAMMERS, &c. always in Stock. THOMAS D. RUSSELL, 78 NEWGATE STREET, LONDON, E.C. JAMES R. GREGORY, MINERALOGIST AND GEOLOGIST. REMEDY MESSRS. MACMILLAN & CO.'S NEW BOOKS. NEW BOOK BY DR. BRUNTON. Now Ready, 8vo, Cloth, 3s. 6d., net. AN INTRODUCTION TO MODERN THERAPEUTICS, Being the Croonian Lectures on the Relationship between Chemical Structure and Physiological Action, delivered before the Royal College of Physicians in London, June 1889. BY T. LAUDER BRUNTON, M.D., D.Sc. Edin., LL. D. Aberd., F.R.C.P., F.R.S. NEW VOLUME OF "NATURE SERIES." Now Ready, Crown 8vo, Cloth, 7s. 6d. THE APODIDE: A MORPHOLOGICAL STUDY. By HENRY MEYNERS BERNARD, M. A. Cantab. With 71 Illustrations. SCOTSMAN:-"A book which zoologists will very greatly prize. The writer has worked out the task he set before him with the greatest care and in the most elaborate manner, and has presented the fruits of his labour in a volume which every lover of scientific investigation will thoroughly appreciate. A valuable contribution to zoological investigation." NEW AND THOROUGHLY REVISED EDITION. Now Ready, Second Edition, Globe 8vo, 4s. 6d. BLOWPIPE ANALYSIS. By J. LANDAUER, Member of the Imperial German. Academy of Naturalists. Authorized English Edition, by JAMES TAYLOR, B. Sc. Second Edition, Revised and Enlarged. MACMILLAN AND CO., LONDON. PERKEN, SON, & RAYMENT, For General Excellence, Definition, and Magsifying Power, we invite intending Purchasers to test our Field and Opera Glasses against any in the world. "OPTIMUS" SCOUT. 66 99 HATTON CARDEN, LONDON. HOLBORN VIADUCT, OPTIMUS" UBIQUE CAMERA. Pictures 44 by 34 ins. May be used on Tripod or Carries Slides, Screen, View Finder, Shutter, &c. PHOTOGRAPHIC OUTFITS. Superior long Focus, Rack Camera, Dark Slide, Rapid Rectilinear Lens, Instantaneous Shutter, Tripod, and Waterproof Case com plete. For For Plates Plates near, Works in any Weather. Best made, Studded Plates. WITH 15-INCH PLATES, £4 10 17 33 20 O 5 10 6 10 O NEW POLARIZING PRISM. CHEAP SCHOOL APPARATUS HARVEY PEAK, New Substage Condenser. New Photo-Micrographic Apparatus. for Students, the Laboratory, and VAN HEURCK'S Vertical Camera. Complete Microscopical Outfits, &c., &c., &c. The above Catalogue sent Post free on application. Classified List of 40,000 Highest-class Microscopic Objects sent Post free on application. W. WATSON & SONS, OPTICIANS TO HER MAJESTY'S GOVERNMENT, ESTABLISHED 1837. 313 HIGH HOLBORN, LONDON, W.C. AND 251 SWANSTON STREET, MELBOURNE, AUSTRALIA. AWARDED-2 GOLD MEDALS, Paris Universal Exhibition, 1889: 2 DIPLOMAS OF HONOUR for MICROSCOPES and MICROSCOPIC OBJECTS, Antwerp International Microscopical Exhibition, 1891; and 24 GOLD AND OTHER MEDALS at the Principal International Exhibitions of the World. CELLULAR UNDERWEAR AND SHIRTS. CELLULAR AERTEX CLOTH is composed of small cells, in which the air is enclosed and warmed by the heat of the body. A perfect nonconducting layer is thus formed next the skin. Owing to the CELLULAR construction, this cloth is much lighter and better ventilated than ordinary fabrics, and is easier to wash. CELLULAR AERTEX CLOTH is made in Cotton, Silk, Silk and Cotton, Silk and Wool, and Merino. Illustrated Price List of full range of Cellular Goods, with names of 160 OLIVER BROS., 417 Oxford Street, London, W. STANLEY Mathematical Instrument Manufacturer to H.M. Government, Council of Of the Highest Quality and Finish, at the most Moderate Prices. W. F. S. obtained the only Medal in the Great Exhibition of 1862 for Address:-GREAT TURNSTILE, HOLBORN, LONDON, W.C. TO SCIENCE LECTURERS. See Mr. HUGHES'S PATENT COMBINATION OPTICAL LANTERN, used by late W. LANT CARPENTER, Esq., Prof. FORBES. New Triple constructed for B. J. MALDEN, Esq., this season. New Oxyhydrogen Microscope. Grand Results Docwra Triple, Prize Medal, Highest Award. Supplied to the Royal Polytechnic Institution, Dr. H. GRATTAN GUINNESS, Madame ADELINA PATTI, &c. Patent Pamphagos Lantern Science Lecture Sets. Novelties Cheapest and Best. Elaborately Illustrated Catalogue, 300 Pages, 1s.; Postage, 5d. Smaller do., 6d. Pamphlets Free.-HUGHES, Specialist, Brewster House, Mortimer Road, Kingsland. N. Pure FRY COCON 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 28, 1892. |