MANCHESTER ROYAL INFIRMARY. ENTRANCE MEDICAL SCHOLARSHIPS. TWO SCHOLARSHIPS are offered, one for proficiency in Arts, and one for proficiency in Science. Each Scholarship is of the value of £ico, and the successful candidates will be required to enter for the full medical curriculum in the University and the Infirmary, The Scholarships will be awarded to candidates who give evidence of a high standard of proficiency in Arts or Science respectively. Applications should be sent on or before July 1 to the REGISTRAR, from whom further particulars may be obtained. UNIVERSITY OF MANCHESTER. A PLATT BIOLOGICAL SCHOLARSHIP of the value of £50 is offered for award. The Scholarship is open to persons who have studied Zoology or Botany in any University or College Laboratory, and the successful candidate will be required to devote himself to research in the Zoological or Botanical Laboratory of the University during the tenure of the Scholarship. Applications should be sent on or before July 7 to the REGISTRAR, from whom further particulars may be obtained. GUY'S HOSPITAL. ENTRANCE SCHOLARSHIPS, to be competed for in September, 1906. TWO OPEN SCHOLARSHIPS in ARTS, one of the value of £100, open to Candidates under 20 years of age, and one of £50, open to Candidates under 25 years of age. TWO OPEN SCHOLARSHIPS in SCIENCE, one of the value of £150, and another of £60, open to Candidates under 25 years of age. ONE OPEN SCHOLARSHIP for University Students who have completed their Study of Anatomy and Physiology, of the value of £50. Full particulars may be obtained on application to the DEAN, Guy's Hospital, London Bridge, S. E. ROYAL STATISTICAL SOCIETY. A paper on "The Generalised Law of Error, or Law of Great Numbers," by Professor F. Y. EDGEWORTH, M.A., D.C.L., will be read before the Royal Statistical Society, 9 Adelphi Terrace, on Tuesday, June 19, at EGYPTIAN GOVERNMENT. MINISTRY OF EDUCATION. he following post at the School of Medicine, Cairo, is vacant : ASSISTANT TO THE PROFESSOR OF CHEMISTRY. The appointment is for two years, and may be renewed at the end of that time. Applicants should forward copies of testimonials and such other particulars as are mentioned below. The way of the post is £E.320 per annum, the Egyptian Pound being worth td. more than the Pound Sterling. Private Practice is not allowed. It is to be distinctly understood that the appointment gives no claim to pension or indemnity The Government reserves to itself the right to dismiss the assistant for misconduct or incapacity. In the Government Schools, as in all State Administrations in Egypt, Sunday is a working day. The Schools are closed on Fridays. Leave will be granted on the same terms as to other Government Officials. The possibility of taking leave, and the period of the year at which it is granted, depend upon the exigencies of the service Pay commences from date of arrival in Cairo. On taking up his duties in Caro, the Assistant will receive one month's pay in lieu of passage money. All applicants should attach a certificate from a legally qualified medical an, stating that in his opinion the candidate would pass as a first-class life for insurance purposes. All applicants should state: Their training and qualifications in Analytical Chemistry, Their age, What foreign languages they know, and If they can be in Cairo by October 1. The latest mail by which applications may be posted will leave London on Friday, August 31. Applications to be addressed :-THE DIRECTOR, Government School of Medicine, Cairo, Egypt. COUNTY BOROUGH OF CROYDON EDUCATION COMMITTEE. The Committee invite applications for the appointment of FORM MASTER at the Secondary School for Boys, Central Polytechnic, Croydon. Salary, 150 per annum, rising by annual increments of £10 to a maximum of 400 per annum. The salary will be subject to an annual percentage deduction in accordance with the provisions of the Superannuation Scheme adopted by the Council under the powers of the Croydon Corporation Act, 1893. Applications, stating age, experience and full particulars of qualifications, For use with the above"HOW TO FORETELL THE WEATHER WITH THE POCKET SPECTROSCOPE." By F. W. CORY, F.R.M.S., M.R.C.S., &c. With 10 Illustrations. In paper cover, 1s. 2d. ; in cloth, 1s. 8d. post free. STUDENTS' SPECTROSCOPES, £7, £8 16s., and £15. Illustrated Catalogues of Spectroscopes or Telescopes post free. Man's, wgether with copies of testimonials, must reach the undersigned not later JOHN BROWNING, Optic, 78 STRAND, LONDON. than Saturday, July 7, 1906. Education Office, Katharine Street, Croydon, June 11, 1906. JAMES SMYTH, Clerk. INDIAN AGRICULTURAL DEPARTMENT. The Secretary of State for India in Council invites applications for TWELVE APPOINTMENTS in the INDIAN AGRICULTURAL DEPARTMENT, for which five all-round Agriculturists, three Agricultural Botanists, and four Agricultural Chemists are required. Candidates should possess a University Honours Degree, or recognised diploma in agriculture, agricultural botany, or agricultural chemistry, as the case may be, and should not be under 23 or over 30 years of age. Applications bould be received before the end of June. Further particulars and application forms may be had from the SECRETARY, Revenue Department, India Office, S. W. Apply not later than July 7 to Education Offices, E. B. SHARPLEY. BOROUGH ESTABLISHED 1765. OF HASLINGDEN. MUNICIPAL SECONDARY SCHOOL. WANTED for the above Mixed School, SENIOR MISTRESS, especially qualified in French. Commencing salary, 120, rising by biennial increments of £10 to £160 per annum, with further non-automatic increments upon special recommendation. Additional remuneration will be given for Evening School duties. Candidates must be Graduates. Duties to commence September next. Applications, endorsed "Senior Mistress," stating age, qualifications and experience, together with copies only of three recent testimonials, to be sent to the undersigned not later than Saturday the 23rd instant, WALTER MUSGROVE, Particulars can be obtained from the undersigned, to whom six copies of application and three testimonials should be sent not later than June 30 June 7, 1906. T. W. SHORE, Dean. ST. BARTHOLOMEW'S HOSPITAL AND COLLEGE. DEMONSTRATOR OF PHYSICS. Applications are invited for the post of DEMONSTRATOR of PHYSICS. Salary, £150 per annum. Further particulars can be obtained from the undersigned, to whom six copies of application and testimonials should be sent not later than June 30 June 7, 1906. T. W. SHORE, Dean. THE GLASGOW AND WEST OF SCOTLAND TECHNICAL COLLEGE. DEPARTMENT OF NATURAL PHILOSOPHY. The Governors invite applications for the PROFESSORSHIP of NATURAL PHILOSOPHY in this College, vacant by the death of Professor James Blyth, M.A., LL.D. Salary, £500. Applications, with testimonials, must be sent not later than July 14 to the SECRETARY, Technical College, Glasgow, from whom further information may be obtained. NORTHERN POLYTECHNIC INSTITUTE, HOLLOWAY, LONDON, N. The Governors of the above Institute invite applications for the following appointments : ASSISTANT in ENGINEERING DEPARTMENT. Salary, 150 per annum. Full time. ASSISTANT in SECONDARY DAY SCHOOL (Boys and Girls). Salary, 150 per annum. Full time. TEACHER of HOUSEWIFERY. Full time. Applications to be made on special forms, which must be returned not later than June 27, to be obtained from W. M. MACBETH, Clerk to the Governors. BATTERSEA POLYTECHNIC, LONDON, S. W. The Governing Body require the services of the following from September next: LECTURER in PAPER MAKING for Evening Classes. For particulars send stamped addressed envelope to the SECRETARY. HIGH SCHOOL, MAIDENHEAD. WANTED in September, FORM MISTRESS. Subjects: Physiography (Elementary Physics and Chemistry) for Pupil Teachers. Degree or equivalent essential. Apply to the HEADMISTRESS. TO LIBRARIANS OF UNIVERSITIES AND EARLY LITERATURE of MAGNETISM The following rare works, duplicates from the Library of Professor Silvanus P. Thompson, are offered for sale. The Collection is offered en bloc; but, if not disposed of before September, offers for individual books will be entertained. For full descriptive Ilst apply to Professor Silvanus P. Thompson, Technical College, Finsbury, Leonard Street, London, E. C. Barlowe, Navigators' Supply, 1597; Barlowe, Magneticall Advertise LIQUID AIR AND LIQUID HYDROGEN. Dr. HAMPSON'S AIR-LIQUEFIER is now made to a standard partern, 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. COURSE OF INSTRUCTION ON OCEAN RESEARCH. T1 HE courses will consist partly of lectures, partly of practical instruction and assistance in laboratory work; excursions will also be made, during which the use of various appliances and instruments will be practically demonstrated. All pupils must, however, bring microscopes and magnifying glasses. Each student is charged a fee of about four guineas (Kr. 75.00). Special pupils who desire to continue their studies after the conclusion of the regular course are permitted to do so, and are not required to pay any additional fee. The lectures are so arranged that it is possible for all the students, if they so wish, to attend them all. (1) Systematic examination of representative forms of the fish and invertebrate animals in the fiords, the North Sea and the Norwegian Sea. Demonstration of the most important species and guidance as to classifying them. (2) A review of the distribution of the bottom fauna in the same districts, and its dependence upon the configuration of the bottom and upon hydrographical conditions. (3) Excursions in the adjacent fiords, for the purpose of studying the invertebrate fauna. Opportunities will also be given for morphological study (dissections, &c.) of various types of invertebrates. II. Dr. D. DAMAS: III. (1) Animal plankton :-Systematic examination; special attention paid to fish-eggs and young fish. B. HELLAND-HANSEN :- (1) Instruction, combined with laboratory practice, on the methods of oceanographic investigations. (2) (3) Lectures on theoretical oceanography, including hydrodynamical calculations of ocean currents. IV. E. JØRGENSEN : The plankton alga (diatoms and peridineæ) systematised. V. Docent C. F. KOLDERUP : (1) Ocean bottom deposits. (2) Glacial and post-glacial deposits in Norway. All wishing to attend the above course should apply to THE OCEANOGRAPHICAL INSTITUTE OF BERGEN MUSEUM, BERGEN, NORWAY, before July 1, 1906. Information as to lodging, &c., will be furnished if desired. NOTE. Please state clearly in your application to what extent you wish to take part in the course of instruction, and give the The Governors of the Royal Veterinary College, Camden Town, desire to obtain the services of a PROFESSOR of BIOLOGY and also of a LECTURER on PHYSICS. Particulars can be obtained from the SECRETARY OF THE College, to whom all applications for these appointments should be addressed as above, not later than June 28. TO SCIENCE AND MATHEMATICAL MASTERS.-Immediate and September Vacancies.-Graduates and other well qualified Masters seeking posts in Public and other Schools W. WILSON, Maker of SPECTROSCOPES, SPECTROMETERS, GONIOMETERS, should apply at once, giving full details as to qualifications, &c., OPTICAL BENCHES, OPTICAL AND OTHER to Messrs. GRIFFITHS, SMITH, POWELL & SMITH, Tutorial Agents (Estd. 1833), 34 Bedford Street, Strand, London. Immediate notice of all the best vacancies will be sent. Experienced Coach desires a few pupils in MEASURING INSTRUMENTS. BEST WORK. MODERATE PRICES. Price List Free. HERBARIUM.—Recently formed collection 1 Belmont Street, Chalk Farm, London, N.W. of British Plants wanted; well mounted in standard sheets, size about 18" X 12". Localities must be given.-Full particulars and price to "No. K 118," Keith's Advertising Agency, 59 George Street, Edin. burgh. CLASSIFIED LIST OF SECOND-HAND INSTRUMENTS, Consisting of 36 Pages of articles by the best makers in the Post Free to Readers of "NATURE.' C. BAKER, 244 HIGH HOLBORN, LONDON. THE IRISH NATURALIST. A Monthly Magazine of Irish Zoology, Botany, and Edited by GEO. H. CARPENTER, B.Sc., and R. LLOYD Annual Subscription, 5s. Post Free to any Address. Dublin EASON & SON, LTD., 40 Lower Sackville Street (to which Address Subscriptions should be sent London: SIMPKIN, MARSHALL, HAMILTON, KENT & CO., Ltd. W. G. PYE & CO., INSTRUMENT MANUFACTURERS, GRANTA WORKS, CAMBRIDGE. SUBSTANTIAL, RELIABLE LABORATORY APPARATUS AT REASONABLE PRICES. ILLUSTRATED LIST on application. SCIENTIFIC WORTHIES. The following is a list of the Steel Portraits that have appeared in the above Series:- HERMANN L. F. HELMHOLTZ. N.B.-The Portraits of Sir A. JOHN COUCH ADAMS. JAMES JOSEPH SYLVESTER. Geikie, Lord Lister, Prof. Cannizzaro, Prof. von Kölliker, Prof. S. Newcomb, Sir W. Huggins, Lord Rayleigh and Prof. Suess belong to a New Series and are Photogravures. Proof impressions of these, printed on India paper, may be had from the Publishers, price 5s. each; or the Series of 85 Portraits in a Handsome Portfolio for £9, carriage paid. The Portfolio may be had separately, price 68. Cheques and Money Orders payable to MACMILLAN & CO., Limited. MACMILLAN & CO.'S BOOKS FOR STUDENTS OF ZOOLOGY. A HANDBOOK OF BRITISH INLAND BIRDS. BY ANTHONY COLLETT. Plates of Eggs by ERIC PARKER. Crown 8vo. 6s. By THE CAMBRIDGE NATURAL HISTORY. EDITED BY S. F. HARMER, Sc. D., F. R.S., AND A. E. SHIPLEY, M.A., F.R.S. WORMS, LEECHES, &c. INSECTS. PART II. Hymenoptera continued (Tubulifera and Aculeata), Coleop tera, Strepsiptera, Lepidoptera, Diptera, Aphaniptera, Thysanoptera, Hemiptera, Anoplura. By DAVID SHARP, M.A., F.R.S. Volume I., dealing with PROTOZOA (including Sea Anemones, Jelly Fish, Star Fish, &c.), will be ready shortly. and Volume IV., dealing with SPIDERS, SCORPIONS, and CRUSTACEA, is in the Press. A YEAR WITH THE BIRDS. By A TEXT-BOOK of COMPARATIVE AN INTRODUCTION TO NATURE STUDY. By E. STENHOUSE, B.Sc. Globe 8vo. 3s. 6d. ELEMENTARY PRACTICAL ZOOLOGY. By Professor T. J. PARKER, D.Sc., F.R.S., and Professor W. NEWTON PARKER, Ph.D. With 156 Illustrations. Crown 8vo. 10s. 6d. A MANUAL OF ZOOLOGY. ANATOMY. By Dr. ARNOLD LANG. With Preface by ELEMENTS of the COMPARATIVE By THE STRUCTURE of MAN: An IN With 300 Prof. T. J. PARKER, D.Sc., F.R.S, and Prof. W. A. HASWELL, M.A., D.Sc., F.R.S. Illustrations. Crown 8vo. 10s. 6d. A TEXT-BOOK OF ZOOLOGY. By Professor T. J. PARKER, D.Sc., F. R. S., and Profes. sor W. A. HASWELL, M. A., D.Sc., F.R.S. In Two Vols. With Illustrations. Medium 8vo, 36s. net. INTRODUCTION TO ZOOLOGY. By C. B. and G. C. DAVENPORT. Crown 8vo. 6s. LESSONS IN ELEMENTARY BIOLOGY. By Prof. T. J. PARKER, D.Sc., F.R.S. Illustrated. Third Edition, revised. Crown 8vo. 10s. 6d. A COURSE of INSTRUCTION in ZOOTOMY. (Vertebrata.) By Professor T. J. PARKER, D. Sc., F.R.S. With Illustrations. Crown 8vo. 8s. 6d. THE ORIGIN AND METAMOR PHOSES of INSECTS. By LORD AVEBURY, F. R.S. With Illustrations. Crown 8vo. 35. 6d. [Nature Series. An INTRODUCTION to the OSTEOLOGY OF THE MAMMALIA. By Sir WILLIAM H. FLOWER, F.R.S., F.R.C.S. Illustrated. Third Edition. Revised with the assistance of IANS GADOW, Ph.D. Crown 8vo. 10s. 6d. DEX to his PAST HISTORY. By Professor WIED A TREATISE ON COMPARATIVE The ELEMENTS of EMBRYOLOGY. 1 |