to their Agricultural Revenues." The paper is based on the accounts, published annually, of the colleges (and the university) of Oxford, and is a continuation of one read in 1895. The gross external receipts of the colleges (and the university) in 1903 exhibited an increase on 1893 of 29,7971., and on 1883 of 16,343. The net external receipts of the colleges alone showed an increase of 16,5661. on 1893, and a decrease of 10,311. from 1883. Later in his paper Mr. Price states that it hardly seems extravagant to affirm that during a quarter of a century the colleges (and the university) have lost between a third and a fourth of their agricultural revenues. Had it not been for an increase in revenues derived from other sources, they would have been crippled yet more seriously. The most noticeable feature is the large increase in the receipts from houses and sites of houses. Between 1883 and 1903 these receipts were doubled, and between 1893 and 1903 they increased from 56,8771. to 91,3881. On the whole this gross increase has more than balanced the gross diminution in the receipts from lands and tithe. The internal receipts of the colleges increased by 58141. between 1883 and 1893, and by 11,4281. between 1893 and 1903. THE annual conference of headmasters of public schools was held this year at Christ's Hospital, West Horsham, on Thursday and Friday last, December 22 and 23. Among the subjects discussed on Thursday were the recommendations of the consultative committee of the Board of Education for the establishment of school certificates, and the policy of the Board of Education in encouraging the sending of intending elementary school teachers to secondary schools in lieu of pupil teacher centres. The following resolutions were adopted :-"That the question of school certificates be referred to the committee of the conference with a view to immediate action, and that it be an instruction of the committee to obtain in writing the opinion of every member of the conference on the various points involved in the scheme of the consultative committee." "That this conference pledges itself to support the education authority in its policy of providing that candidates for pupil teacherships in public elementary schools shall receive a substantial portion of their education in a public secondary school, and considers it desirable that as many recruits as possible for teacherships in public elementary schools should be obtained from the ranks of ordinary pupils of secondary schools." On Friday a discussion took place on the subject of Greek, with special reference to the proposals of the Cambridge Syndicate, and the following resolution was carried by twenty-one votes to eight:"That, without committing itself to details, the conference generally disapproves of the Cambridge Syndicate with regard to Greek in the Previous Examination." The conference also expressed itself against some of the reforms of the new Army entrance examinations, and carried the following resolution unanimously:-" That this conference hopes that the scheme for qualifying certificates in the examination for Woolwich and Sandhurst will be so amended as to encourage the study of Latin." A strong representation is to be made to the War Office on this subject. It was also agreed that the committee of the conference should consider the syllabus issued by the Board of Education on the teaching of English literature, and should include their recommendations in the annual report. SOCIETIES AND ACADEMIES. Royal Meteorological Society, December 21.- - Capt. D. Wilson-Barker, president, in the chair.-Decrease of fog in London during recent years: F. ). Brodie (Discussion). -The study of the minor fluctuations of atmospheric pressure: Dr. W. N. Shaw, F.R.S., and W. H. Dines. The authors described an apparatus called the "microbarograph," which they have designed to magnify the minor fluctuations, and at the same time to disentangle them from the general barometric surges. They also showed some records from three of these instruments. The authors wish to obtain information as to the nature of the disturbances and the causes to which they may be assigned. Among the causes which suggest themselves as likely to APPS, 433 STRAND, LONDON. MANUFACTURER of Patented Induction Coils, other Scientific Instruments and Engineering Appliances to the Government Departments. JOINTLESS SECTION COILS, my system of 1868, to order, 10 in. Coils Maker and Designer of the following Coils :- THE SOUTH KENSINGTON COIL, 48 in. spark. Special Coils for NEW TRIPLE-POLE MERCURY BREAK, giving a stream-like effect HOSPITAL X-RAY SETS, complete in every detail, from £25 each. HIGH FREQUENCY APPARATUS of my newest models. Pitchblende, from 2/- to 30/- per piece; in Powder, 2/6 per oz. Aeschynit, 2/- per oz. Emanium, 30/- per decigramme. OZ. Rad. Residue, 2/- per tube. Polonium, 21/- per gram ; 11/--gram. Bar. Plat. Cyan., for Screens, 3/- gramme, 60/- oz. Crystals, 4/- per square inch. NEW ZEALAND VEGETABLE CATERPILLAR; from 2 to 3 inches long, with a stem showing fructification growing out of its head. Specimens may be had from 10/6 to 21/-, according to quality and size. See NATURE, May 12, 1904, page 44. Goods may be returned if not approved of, when money will be refunded. ARMBRECHT, NELSON & CO., JENA TRADE MARK. tary Analysis. (Price-list sent on application. SCHOTT & GEN. Glassworks, Jena (GERMANY). in the U.K., on sale with the following firms: The Jena Glasses are, A. & J. SMITH, 23 and 25 St. Birmingham. F. E. BECKER & CO. (W. and Dublin. F. E. BECKER & CO. (W. and High-Class Apparatus for Röntgen F. E. BECKER & CO. (W. and Ray and High Frequency Work. 10", 12" & 14" INDUCTION COILS. PORTABLE HOSPITAL SETS, SWITCHBOARDS, &c., &c. New Descriptive Price List Free on Application to 18 Finch Lane, London, E.C. J. George, Ltd., Successors), 36 Manchester. FREDK. JACKSON & Co., JAMES WOOLLEY, SONS & BAIRD & TATLOCK (London) F. E. BECKER & Co. (W. and A. GALLENKAMP & Co., Ltd., JOHN J. GRIFFIN & SONS, For Photography, Unsurpassed for fine definition COOKE LENSES TAYLOR TAYLOR HOBSON IT STOUGHTON STREET WORK LEICESTER 34 MACMILLAN & CO.'S LIST. VOLUME VII. NOW READY. THE CAMBRIDGE NATURAL HISTORY. EDITED BY S. F. HARMER, Sc. D., F.R.S., AND A. E. SHIPLEY, M.A., F.R.S. TO BE COMPLETED IN TEN VOLUMES. FULLY ILLUSTRATED. 8vo. PRICE 175. NET EACH. FISHES (exclusive of the Systematic Account of Teleostei). By T. W. BRIDGE, Sc.D., F.R.S. FISHES (Systematic The volume dealing with SPIDERS, SCORPIONS, and CRUSTACEA is in the Press, and the remaining volume, dealing with PROTOZOA (including Sea Anemones, Jelly Fish, Star Fish, &c.), is in active preparation. SIR WILLIAM HENRY Late Director of the Natural History Museum, and President of the Royal Zoological Society. A Personal Memoir. ACADEMY.-"Verily a life worth living, and worthy of remembrance." SPECTATOR.-"Flower's youngest son has contributed two chapters on his father's early life, and his widow some personal details of his last years. . . . An address which Sir William gave at the Church Congress at Reading admirably expounds the bearings of science on religion and the reasons for modifying some of our theology. . . . The Sunday opening of museums, which Flower always urged became an accomplished fact, and the long-fought question was silently settled by a Resolution of the House of Commons in 1896." . COUNTRY LIFE.—“One of those rare books which is precisely what it pretends to be." LAND AND WATER.—“It is interesting to all sportsmen, for not only was Sir William author of the masterly The Horse a Study in Natural History,' and an expert taxidermist, but the results of his system of exhibiting, labelling, and arranging the skeletons of animals are seen to-day in every up-to-date museum in the world. Sir William Flower's courtesy freed him from the difficulties which had beset his predecessors, he had the temper of a saint, and the manners of an ambassador.'" NEW VOLUME BY HENRY SIDGWICK. MISCELLANEOUS ESSAYS AND ADDRESSES. 8vo. IOS. net. By H. S. HALL, M.A., and F. H. STEVENS, M.A. AN ELEMENTARY COURSE OF MATHEMATICS, comprising Arithmetic, ALGEBRA, AND GEOMETRY. Globe 8vo. 2s. 6d. AN INTRODUCTION TO THE CALCULUS. Based on Graphical Methods. By GEORGE A. GIBSON, M. A., F.R.S. E., Professor of Mathematics in the Glasgow and West of Scotland Techn.cal College. Crown 8vo. 35. 6d. NEW EDITION REVISED IN ACCORDANCE WITH THE FOURTH GERMAN EDITION. THEORETICAL CHEMISTRY FROM THE STANDPOINT OF AVOGADRO'S monthly balances when not drawn below £100. Southampton Buildings, High Holborn, W.C. MICROSCOPICAL PETROGRAPHY. Gentlemen interested in the above study are invited to send to JAMES R. GREGORY & CO., I 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 Half-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. TO SCIENCE LECTURERS. HUGHES' PHOTO ROTOSCOPE CINEMATOGRAPHS. THE MOST PERFECT. No Flickering. Superb Mechanism. Price £7 7 0. The Moto-Photo Camera for taking the Pictures. Illustrated Lists, 2d. See Mr. HUGHES' PATENT COMBINATION OPTICAL LANTERN, &c. Miniature Triple Lantern constructed for B. J. MALDEN, Esq.; great success. New Oxyhydrogen Microscope. Science Lanterns for Class Demonstration. Magnificent Results. Docwra Triple, Prize Medals, Highest Award. Supplied to the Royal Polytechnic Institution, Dr. H. GRATTAN GUINNESS, &c. Patent Pamphengo Science Lanterns. The Universal Lantern 4-inch Condensers, 4-wick Lamp, Portrait Combination front Lenses, 181. 6d. Marvellous value. Science Lecture Sets. Novelties. The Lantern Kaleidoscope. Cheapest Lantern Outfits in the World. Grandly Illustrated Catalogue, over 180 choice Engravings, 6d. ; Postage, d. Small Illustrated Catalogue, 100 pages, free, 5d. List of 50,000 Slides and 300 Lecture Sets, Science Subjects, Views, &c., 6d. ; Postage, ad. Pamphlets Free. W. C. HUGHES, SPECIALIST, Brewster House, 82 Mortimer Road, Kingsland, N. SCIENTIFIC WORTHIES. A List of this Series of Steel and ST. MARTIN'S STREET, LONDON, W.C. WATKINS & DONCASTER, Naturalists and Manufacturers of CABINETS AND APPARATUS N. B. FOR ENTOMOLOGY, BIRDS' EGGS AND SKINS, AND ALL SPECIAL SHOW-ROOM FOR CABINETS. 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.) Our Catalogue (96 pp.) Post free on application. 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 Objects 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. 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. 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 is. 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, Caryophyliia, Alcyonium; 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 of NATURE is "PHUSIS," LONDON. UP-TO-DATE COMPLETE INSTALLATIONS FOR X-RAYS, HIGH FREQUENCY, &C., TO SUIT ALL REQUIREMENTS. ILLUSTRATED LIST AND ESTIMATES Free to any part of the World. ISENTHAL & CO., TOWNSON & MERCER. ESTABLISHED 1798 (OVER A CENTURY). | RETAIL-89 BISHOPSGATE STREET WITHIN, E.C. WHOLESALE-34 CAMOMILE STREET. E.C. Scientific Apparatus Manufacturers and Laboratory Outfitters to the Home and Colonial Departments of H.M. Government, Scientific Institutions, Colleges, and the various Industries throughout the World. & CO., TOWNSON & MERCER, 34 CAMOMILE STREET, E.C. 85 MORTIMER STREET, LONDON, W. Contractors to the Admiralty, War, India, & Colonial Offices, &c. DR. HALDANE'S APPARATUS FOR ESTIMATING THE STEREOSCOPIC COMPANY'S CARBONIC ACID IN AIR. ARTIST'S This is a small portable apparatus designed by Dr. J. S. HALDANE, F.R.S., for the use of Medical Officers of Health, &c. A sample of air can, by means of this apparatus, be tested on the spot, the whole operation being quite simple. SOLE MAKERS See Commendatory Notice in "NATURE," C. E. MÜLLER, ORME & CO., Ltd., 148 High Holborn, London, W.C. Printed by RICHARD CLAY AND SONS, LIMITED, at 7 & 8 Bread Street Hill, Queen Victoria Street, in the City o London, and published by MACMILLAN AND CO., LIMITED, at St. Martin's Street, London, W. C., and THE MACMILLAN COMPANY, 66 Fifth Avenue, New York.-THURSDAY, Dec. 29, 1904 |