"NATURE" says "The new illustrated catalogue of physical apparatus just issued by Messrs. F. E. Becker and Co. (Messrs. W. and J. George, Ltd.) is likely to prove indispensable in the physical laboratories of all our schools and colleges. It runs to 628 large pages, and is strongly bound in cloth. Full particulars are provided, not only respecting the apparatus required in elementary and advanced physical teaching, but also concerning that necessary to the physicist in his research work. All branches of physics are included, and the instruments throughout are explained by excellent illustrations and concise descriptions, and, what is of prime importance, the figure and its appropriate text are close together." NOW READY "Messrs. F. E. Becker and Co. (W. and J. George, Ltd., Successors) have sent us a copy of their new list of apparatus in the various departments of Physics, including Sound, Light, Heat, Magnetism, Electricity, Mechanics, &c. This exhaustive catalogue consists of over 600 pages and some 4000 illustrations. One of its noteworthy features is that the requirements of science teaching in this country and its colonies are always kept in view, and the articles listed cover the latest developments in their subjects. The method adopted in the list itself, together with the completeness of the index, is such as to make reference to it SCIENTIFIC AND By Dr. AUGUST FOREL, Late Professor of Psychiatry at the University of Zurich. EDUCATIONAL BOOKS ANTS AND SOME OTHER INSECTS. NEW & SECOND HAND. LARGEST STOCK in LONDON of SECONDHAND School, Classical, Mechanical, ELEMEN. TARY and ADVANCED SCIENTIFIC BOOKS at about HALF PUBLISHED PRICE. Mathematical, Theological, and Foreign Books. KEYS AND TRANSLATIONS. J. POOLE & CO. (ESTABLISHED 1854), AN INQUIRY INTO THE PSYCHIC POWERS With an Appendix on the Peculiarities of their Olfactory Sense. LORD AVEBURY says, in the Daily Chronicle of September 26:"From his life-long and conscientious study of Ants Dr. Forel is peculiarly qualified to write on such a subject; while from his position at the head of a great lunatic asylum he has had exceptional opportunities, of which he has ably availed himself, for the study of mind in various 104 CHARING CROSS ROAD, phases... When we see an ant-hill, tenanted by thousands of industrious LONDON, W.C. (Formerly of 39 HOLYWELL STREET, STRAND). LEWIS'S CIRCULATING MEDICAL AND SCIENTIFIC LIBRARY. In addition to Medicine and the allied Sciences, the Library includes the subjects of Physics, Chemistry, Electricity, Botany, Geology, Zoology, Astronomy, Psychology, Philosophy, Sociology, Engineering, Geography and Travel, &c. NEW WORKS and NEW EDITIONS on these subjects are added to the Library immediately on publication. SUBSCRIPTION, TOWN OR COUNTRY, FROM ONE GUINEA. Detailed Prospectus, List of Recent Additions, &c., post free on application. London: H. K. LEWIS, 186 GOWER STREET, W.C. LANTERN and MICROSCOPICAL SLIDES In all branches of NATURAL HISTORY, from 6/- per dozen. Over 20,000 in Stock. As supplied to the Principal Universities, Technical Schools, &c.) Send for Catalogues to the actual preparers. FLATTERS & GARNETT, Ltd., Dealers in everything Microscopical, 48 Deansgate, Manchester. LABORATORIES: 16 & 18 CHURCH ROAD, LONGSIGHT, M/C. N.B.-Special Series of 48 Microscopical Slides for Students of Botany, in box, 21/- net. Book of Original Diagrams illustrating this Series, 1/- net. LANTERNS, MICROSCOPES, NATURE STUDY appliances, &c. PHOTO MICROGRAPHIC APPARATUS. LEACH'S LANTERN MICROSCOPE. Speciality. LANTERN SLIDES from Negatives, Book Illustrations, &c. Correspondence invited. ALFRED E. DEAN, THE LARGEST MAKER IN ENGLAND of Apparatus in all Departments of ELECTRO-THERAPEUTICS including Radiography, High Frequency, Hydro-Electric and 82 HATTON GARDEN, LONDON. SECOND-HAND TELESCOPES. 4 in. 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GEORGE & SONS, BOOKSELLERS and Dealers in Scientific, Literary, and other Journals and Reviews, and Publications of Learned and Scientific Societies, in Complete Sets, Volumes, or Parts. Agents for British, Foreign, and Colonial Libraries, Institutions, and Private Book Buyers. Current Catalogue sent post free on application. Books sought for. Correspondence Invited. All communications answered. LIBRARIES OR SMALL COLLECTIONS OF BOOKS PURCHASED. All Orders promptly executed. Established 1820. 151, WHITECHAPEL ROAD, LONDON, ENG. TO SCIENTIFIC MEN ABROAD English Books (New and Second-hand) and Periodicals promptly supplied at lowest rates. German and French Banknotes and Stamps received in payment. References in all parts of the world. W. MULLER, Export Bookseller, London, W. 59 CASTLE STREET EAST, OXFORD STREET. TWO GRAND PRIZES HAVE BEEN AWARDED TO THE CAMBRIDGE SCIENTIFIC INSTRUMENT COMPANY, LTD., OF CAMBRIDGE, ENGLAND, AT THE ST. LOUIS EXHIBITION. ONE in GROUP 19 (Instruments of Precision), ONE in GROUP 71 AND (Various Applications of Electricity). TWO GOLD MEDALS & ONE SILVER MEDAL have also been awarded to Collaborators for Instruments made and exhibited by the Company. TECHNICS. A MAGAZINE TO AID TECHNICAL PROGRESS. NOVEMBER. NINEPENCE NET. PROGRESS OF SCIENCE AND TECHNOLOGY. TRIES. Part V. By J. B. C. KERSHAW, F.I.C. INDUS THE DRIFT" OF PROJECTILES. By F. W. LANCHESTER. COLIN N. BENNETT. THE PREPARATION OF ENGLISH BEERS. Part II. By JAS. LECTURE NOTES AND HOME EXERCISES. By FRANCIS C. THE CHEMICAL ANALYSIS OF HIGH-SPEED STEELS AND THE ELECTRO-MAGNETIC THEORY. Explained without the use A ROLLER ATTACHMENT FOR T SQUARES. GOUDIE, B.Sc., A.M.I. Mech. E. SPINNEY. BY WILLIAM J. By FRANCIS H. DAVIES. SPECIAL DEVICES USED IN WEAVING. By HARRY NISBET. By EDWIN EDSER, CAMBRIDGE UNIVERSITY PRESS. The ANALYTICAL THEORY of LIGHT. By JAMES WALKER, M.A., Christ Church, Oxford, Demonstrator of Physics in the Clarendon Laboratory, Oxford. Royal 8vo. 15s. net. Extract from the Preface.-" In the following pages an attempt is made to give an account of physical optics without having recourse to any hypothesis respecting the nature of the influence that constitutes light or the character of the medium in which it is propagated. From a few simple experimental facts it is shown that a stream of light may be represented by a periodically varying vector transverse to the direction of the beam, and on this result, with an appeal where necessary to experimental facts, the treatment of the subject is based." 105. NOW READY, THIRD EDITION. ELEMENTS of the MATHEMATICAL THEORY OF ELECTRICITY AND MAGNETISM. By J. J. THOMSON, M.A., D.Sc., LL.D., Ph.D., F. R.S., Fellow of Trinity College and Cavendish Professor of Experimental Physics in the University of Cambridge. Third Edition. Crown 8vo. Extract from Preface to Third Edition.-"The most important of the alterations made in this edition is a new chapter on the properties of moving electrified bodies; many of these properties may be proved in a simple way, and the important part played by moving charges in modern physics seems to warrant a discussion of their properties in even an elementary treatise." CONDUCTION OF ELECTRICITY THROUGH GASES. By J. J. THOMSON, M.A., D.Sc., LL.D., Ph.D., F.R.S. Demy 8vo! 165. [Cambridge Physical Series. TIMES.-"It is difficult to think of a single branch of the physical sciences in which these advances are not of fundamental importance. The physicist sees the relations between electricity and matter laid bare in a manner hardly hoped for hitherto. . . . The workers in the field of science are to-day reaping an unparalleled harvest, and we may congratulate ourselves that in this field at least we more than hold our own among the nations of the world." RADIO-ACTIVITY. By E. Rutherford, D.Sc., F.R.S.C., Macdonald Professor of Physics, McGill University, Montreal. Demy 8vo. 10s. 6d. net. [Cambridge Physical Series. JOURNAL OF THE RÖNTGEN SOCIETY.-"The book, containing, as it does, practically all that is known about the radio-active elements, is likely for some time to come to be regarded as the standard work upon the subject." THE CAMBRIDGE BIOLOGICAL SERIES.-New Volumes. General Editor-ARTHUR E. SHIPLEY, M.A., F.R.S., Fellow and Tutor of Christ's College, Cambridge. NOW READY, SECOND EDITION. ZOOLOGY. An Elementary Text-Book. By A. E. SHIPLEY, M.A., F.R.S., and E. W. MACBRIDE, TREES. A Handbook of Forest Botany for THE NATURAL HISTORY OF SOME NATURE.-"An excellent book, written by a man who is equally in his element whether he writes as an outdoor naturalist or as a laboratory student. This combination is by no means a common one, and it is just the combination that is wanted for a book of this kind." THE CAMBRIDGE PHYSICAL SERIES. HEAT and LIGHT. By R. T. Glazebrook, MECHANICS and HYDROSTATICS. By London: C. J. CLAY & SONS, Cambridge University Press Warehouse, Ave Maria Lane. RICHARD CLAY AND SONS, LTD., BREAD ST. HILL, E.C., AND BUNGAY, SUFFOLK. and the number of apprentices and young workmen attending them has increased four-fold. The great success which the rapid growth of polytechnics in different parts of London, since the formation of the Technical Education Board in 1893, has had in the development of evening instruction has not, the report points out, been achieved at the expense of other institutions; it represents a new growth, not the transference of instruction from old to new institutions. Many changes have taken place in the older polytechnics to bring them more into touch with modern requirements, and this has been accompanied in nearly every case by an increase in the volume of instruction. Statistics have been compiled, with regard to the attendances which have been made, from 1893 for a period extending over eight years. It has been impossible to give particulars with regard to all the 4000 classes in the numerous subjects of instruction aided by the London County Council, but mechanical engineering, electrical engineering, carpentry and joinery, plumbing, other building trade classes, experimental physics, chemistry, and mathematics have been selected. The total volume of instruction in these subjects, taken together, shows an increase from 118,732 Student-hours in 1893 to 454,363 student-hours for 1000-1. Since then the number of artisan students has been increasing steadily. The increase in the amount of work done by the students, speaking generally, appears to have been even greater than the growth in numbers. A growing proportion of the students are now, it is satisfactory to find, taking advantage of the systematic courses which have been arranged, involving attendance on several evenings a week; and it is not surprising to find the Board recording its belief that the educational value of the work done in polytechnics, especially as regards the young mechanic, has been in this way greatly increased. As has been frequently pointed out, it was from the first the policy of the Board to avail itself of the opportunity of aiding the supply of technical instruction rather than of creating a direct supply, wherever public institutions have existed capable of responding to the Board's aid by such developments of efficient technical instruction as might be expected to meet the requirements of the district. It has been necessary, however, to provide two classes of institution, for the conduct of which the London County Council is wholly responsible, viz. :— (a) Institutions which provide instruction of such a highly specialised character that it is necessary for them to draw their students from the whole of London; for it has been impossible for any institution with the ordinary sources of income to provide the equipment and the highly specialised teachers necessary. (b) Local institutions, providing instruction of a more ordinary character in districts in which no public institutions under a responsible governing body existed which could be utilised for the Council's requirements. There are many other subjects of interest included in the report, and some of them have already been dealt with from time to time in these columns. It must suffice here, by way of conclusion, to mention briefly the work the Board has accomplished in aiding and extending satisfactory instruction in science in the public secondary schools of London. Seventeen chemical laboratories have been equipped in new buildings, generally in wings added to existing school premises, and three rooms used for class purposes have been converted into chemical laboratories. Four large rooms have been fitted up for practical work in physics and chemistry. Sixteen physical laboratories have been equipped in new buildings, and ten large class rooms have been adapted for practical work in physics, in addition to the four mentioned above, in which practical work in chemistry is also carried on. Thus fifty laboratories have been equipped in secondary schools for boys, with bench accommodation for more than 1200 pupils working simultaneously, or for 6000 pupils working one day a week. Twenty-five science lecture-rooms have been provided, sixteen of these being specially constructed for the purpose in new buildings. A large number of additional science masters have been appointed as a result of the Board's maintenance grants. In secondary schools for girls, laboratories have in some cases been provided for practical work in physics, chemistry, and botany, and some of those in existence have been equipped suitably to meet modern requirements. A. T. S. NOTES. THE list of appointments on the occasion of His Majesty's birthday includes the following honours conferred upon men of science :-Mr. W. H. M. Christie, C.B., F.R.S., has been promoted to the rank of Knight Commander of the Order of the Bath (K.C.B. Civil Division). Dr. J. W. Swan, F.R.S., has received the honour of Knighthood. The Hon. C. A. Parsons, F.R.S., has been appointed a Companion of the Order of the Bath (C.B.). Mr. Francis Watts, Director of Agriculture in the Island of Antigua, and analytical and agricultural chemist for the colony of the Leeward Islands, has been made a Companion of the Order of Saint Michael and Saint George (C.M.G.). THE Council of the Royal Society has made the following award of medals for this year :-The Copley medal to Sir William Crookes, F.R.S., for his long-continued researches in spectroscopic chemistry, on electrical and mechanical phenomena in highly rarefied gases, on radio-active phenomena, and other subjects. The Rumford medal to Prof. Ernest Rutherford, F.R.S., for his researches on radioactivity, particularly for his discovery of the existence and properties of the gaseous emanations from radio-active bodies. A Royal medal to Colonel David Bruce, R.A.M.C., F.R.S., for his researches in the pathology of Malta fever, nagana, and sleeping sickness, and especially for his discoveries as regards the exact causes of these diseases. A Royal medal to Prof. William Burnside, F.R.S., for his researches in mathematics, particularly in the theory of groups. The Davy medal to Prof. William Henry Perkin, jun., F.R.S., for his discoveries in organic chemistry. The Darwin medal to Mr. William Bateson, F.R.S., for his contribution to the theory of organic evolution by his researches on variation and heredity. The Sylvester medal to Prof. Georg Cantor for his researches in the theories of aggregates and of sets of points of the arithmetic continuum, of transfinite numbers, and Fourier's series. The Hughes medal to Dr. Joseph Wilson Swan for his invention of the electric incandescent lamp and various improvements in practical applications of electricity. THE following is a list of fellows who have been recommended by the president and council of the Royal Society for election into the council for the year 1905, at the anniversary meeting to be held on November 30-president, Sir William Huggins, K.C.B., O.M.; treasurer, Mr. A. B. Kempe; secretaries, Prof. J. Larmor, Sir Archibald Geikie; Other members of the foreign secretary, Mr. F. Darwin. council:-Dr. Shelford Bidwell, Mr. G. A. Boulenger, Colonel D. Bruce, R.A.M.C., Mr. F. W. Dyson, Prof. Percy F. Frankland, Prof. F. Gotch, Dr. E. W. Hobson, Prof. |