October 10, 1888. ROBT. J. ELLERY. ANEROID BAROMETER. PERKEN, SON, & RAYMENT, MANUFACTURE PHOTOGRAPHIC APPARATUS Of every description. "OPTIMUS" PHOTOGRAPHIC SETS "OPTIMUS" MAGAZINE CAMERA "OPTIMUS" PHOTOGRAPHIC LENSES For Plates 41 by 31, £3 8s. [All Rights are Reserved. EDINBURGH, May 31,'89. DEAR SIR,-I have just returned from a six weeks' stay at the Ben Nevis Observatory, and while there had an opportunity of testing the admirable qualities of your new "Watkin Aneroid. The result has been most satisfactory, the extreme error noted being only about & of an inch. During my stay at the Ob. servatory the Aneroid was frequently tested by taking it down 2000 feet and then comparing it The results obtained speak volumes for the high-class workmanship and great with the standard on my return. accuracy you have attained in the manufacture of this instrument. (Signed) R. C. MOSSMAN, F.R.M.S., Observer. Scott. Met. Soc. J.J. HICKS, 8, 9, & 10 HATTON GARDEN, LONDON "The 'STAR' MICROSCOPE is a modern marvel at its low price. The lenses alone are worth the money."-British Medical Journal. MODEL "STAR" MICROSCOPE ROYAL INSTITUTION OF GREAT BRITAIN. ALBEMARLE STREET, PICCADILLY, W. LECTURE ARRANGEMENTS AFTER EASTER. LECTURE HOUR, THREE O'CLOCK P.M. THE HON GEORGE C. BRODRICK, D.C.L., Warden of Merton College Oxford.-Three Lectures on The Place of Oxford University in English History"; on Tuesdays, April 15, 22. 29. Half-a Guinea the Course. LOUIS FAGAN, Esq., Assistant Keeper of Prints and Drawings, British Museum. Three Lectures on "The Art of Engraving: (1) Line Engraving; (2) Wood Engraving; (3) Mezzotint Engraving"; on Tuesdays, May 6, 13. 20. Half-a-Guinea. ANDREW LANG. Esq.-Three Lectures on "The Natural History of Society"; on Tuesdays, May 27, June 3, 10. Half-a-Guinea. C. V. Boys, Esq., AR SM, F.RS, M.R.I., Assistant Professor of Physics, Normal School of Science, South Kensington.-Three Lectures on "The Heat of the Moon and Stars (the Tyndall Lectures); on Thursdays, April 17, 24, May 1. Half-a-Guinea. Prof. DEWAR, M A., F.R.S., M.R.I., Fullerian Professor of Chemistry, R.I.-Six Lectures on "Flane and Explosives"; on Thursdays, May 8, 15, 22, 29. June 5, 12. One Guinea. CAPTAIN W. DE W. ABNEY. R.E., C. B., F.R S.. M.R.I.-Three Lectures on Colour and its Chemical Action"; on Saturdays, April 19, 26, May 3. Half-a Guinea. CHARLES WALD TEIN, Esq., Litt. D., Ph. D.-Three Lectures on "Excavating in Greece" on Saturdays, May 10, 17, 24 Half-a-Guinea. THE REV. S. BARING-COULD, M.A -Three Lectures on "The Ballad Music of the West of England" (with Musical Illustrations); on Saturdays, May 31. June 7, 14.. Half-a-Guinea. Subscription (to Non-Members) to all the Courses during the Season, Two Guineas. Tickets issued daily. Members may purchase not less than Three Single Lecture Tickets, available for any Lecture, for Half-a-Guinea, The FRIDAY EVENING MEETINGS will be resumed on April 18, when Sir Frederick Bramwell, Bart., F. R. S., will give a Discourse on "Welding by Electricity," at 9 p.m. Succeeding Disc urses will probably be given by Sir John Lubbock, Bart., M P., Mr. W. H. Pollock, Mr. R. Brudenell Carter, Prof. Raphael Meldola. Prof A. C. Haddon, Mr. A. A. Common. Prof. W. Boyd Dawkins and other Gentlemen. To these Meetings, Members and their Friends only are admitted. Persons desir us of becoming Members are requested to apply to the Secretary. When proposed, they are im nediately admitted to all the Lectures, to the Friday Evening Meetings, and to the Library and Reading Rooms; and their Families are admitted to the Lectures at a reduced charge. Payment: First Year, Ten Guineas; afterwards, Five Guineas a Year; or a composition of Sixty Guineas. THE LONDON HOSPITAL MEDICAL COLLEGE. The SUMMER SESSION will commence on THURSDAY, MAY 1. The Hospital, which is the largest general Ho pital in the Kingdom, contains nearly 800 beds. all in constant use. There are wards for accidents, surgical and medical cases, diseases of women and children, and ophthalmic cases. Special departments for diseases of the eye, ear, throat, skin, and teeth, and for cancer, tumours, diseases of the bladder, piles, and fistula. Number of in-patients last year, 8873; out-patients, 101,548; accidents, 7456. Surgical operations daily. APPOINTMENTS.-Resident Accoucheur, House Physicians, House Surgeons, &c. Forty of these Appointments are made Annually. Numerous Dressers, Clinical Clerks, Post-mortem Clerks, and Maternity Assistants are appointed every Three Months. All Appointments are Free. Holders of Resident Appointments are also provided Free Board. The New College Buildings are now complete, and afford more than double the former accommodation. SCHOLARSHIPS AND PRIZES.-Twenty Scholarships and Prizes are given annually. Students entering in May are eligible to compete for the four Entrance Scholarships in September. Luncheons or Dinners, at Moderate Charges, can be obtained in the Students' Club. NB.-Special arrangements have been made to meet the requirements of the Examining Board in England so as to enable Students entering in May to pass Part I. (Chemistry and Chemical Physics), and Part II. (Materia Medica and Pharmacy) of the First Examination in July. The London Hospital is now in direct communication with all parts of the Metropolis. The Metropolitan District and other Railways have Stations within a Minute's Walk of the Hospital and College. For further Information apply Personally or by Letter to MUNRO SCOTT, Warden. ST. MARY'S HOSPITAL MEDICAL SCHOOL, PADDINGTON, W. Two ENTRANCE SCHOLARSHIPS of £50 each in Classics and Mathematics will be awarded by Exam nation on APRIL 25. and in SEPTEMBER there will be an Examination for Entrance Scholarships in Natural Science. There are Special Classes in preparation for the Examinations of the University of London. The Prospectus and full Particulars may be had by applying to the School Secretary, Mr. FREDERIC H. MADDEN. The Summer Session begins on MAY 1. HERBERT W. PAGE, M.C., Dean. 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 Dinobryon sertularia, with sken and description. He also sent out Lophopus crystallinus, Argulus foliacea Corethra, Trout Ova, Philodina roseola, Flosculana, Corethra plumeye, Melicerta ringens, Stephanoceros; also Amba, Hydra, Vorticella, Cray® A Dog-Fish, Amphioxus, and other Specimens for Biological Laboratory woma Weekly Announcements will be made in this place of organisms I 1 is supplying. Specimen Tube, One Shilling, post free. Twenty-six Tubes in Course of Six Months for Subscription of £1 1. or Twelve Tubes for 10s. 6d. Portfolio of Drawings, Eleven Parts, is, each. Leeds meCHANICS' INSTITUTION AND LITERARY SOCIETY. The Directors invite applications for the post of HEAD MASTER O SCHOOL OF SCIENCE AND TECHNOLOGY and TEACHER OF CHEMISTRY to the Boys' and Girls' Schools in connection with fizet stitution, the present Head Master having been elected to the Head Ma ship of the Merchant Venturers' School. Bristol. The Master app will be expected to take the classes in Theoretical and Pract cai Inorges and Organic Chemistry, and to exercise a general superviston over the of a classes of the School of Science. The School buildings are new and with all necessary materials and apparatus for science teaching partly fixed and partly dependent upon results, amounts to about Lak Full part culars may be had from the SECRETARY, to whom applestie must be sent not later than April 23. ST. THOMAS'S HOSPITAL MEDICAL SCHOOL, ALBERT EMBANKMENT, LONDON, S.E. The SUMMER SESSION will commence on MAY 1 Students estre ing in the Summer are eligible to compete for the Science Scholarships of s Guineas and Coo awarded in October. There are numerus Prizes and Scholarships, and all Appointments open to Students, without extra charge. Special Classes for the Examinations of the University of London held throughout the year. A Register of approved lodgings, and of pover families receiving Students to reside, is kept in the Secretary's Office. Prospectus and all particulars may be obtained from the Met a Secretary, Mr. G. RENDLE. E. NETTLESHIP, Dean trar. Applications, with Testimonials, should be addressed to the Senate mar cover to the REGISTRAR, not later than April 28. HENRY WM. HOLDER, MA.. Reg BIOLOGY (Zoology and Botany). Courses adapted to the requirements of Candidates for the Preli Scientific Examination of the University of London under the dire t Prof. KAY LANKESTER and Prof. OLIVER commence on APRIL 1 Students can enter as late as MAY 1. Apply to the SECRETARY or to Prof. LANKESTER at University Calleja. London, Gower Street, W. C. E. RAY LANKESTER, M.A.. LL.D., F.B.S., Tea UNIVERSITY COLLEGE, LONDON. The Classes re-commence on MAY 1, and are so arranged as to allo a convenient opportunity for Students to commence their Medical Cance Full information may be obtained from the Office of the College, Cas Street, W.C. JOHN WILLIAMS, M.D., Dean Sales by Auction. MONDAY, APRIL 14. IMPORTANT SALE OF SCIENTIFIC BOOKS. MR. J. C. STEVENS will Sell by Auction at his Great Rooms, 38 King Street, Covent Garden, on MONDAY, APRIL 14, at half-past 12 precisely, the Library of the late Dr. ARTHUR WALLER, of Gibson Square, Islington, together with other Valuable Natural History Works, comprising Sharpe's "Monograph of Alcedinidæ," Shelley's "Monograph of Nectarinidæ," Latham's "General Synopsis of Birds." Levaillant's "Histoire Naturelle des Perroquets," De Souaucé's "Iconographie des Perroquets," Gould's "Mammals of Australia," "Birds of Asia," "Monograph of Trochilida," "Monograph of Khamphastida," Gould's and Sharpe's "Birds of New Guinea, Sowerby's "English Botany" edited by J. T. B. Svare, Reeve's "Conchologia Iconica," Vols. I. to X., and many other important Illustrated Works. On View Saturday prior from 10 to 4, and Morning of Sale, and Catalogues had. TUESDAY AND WEDNESDAY, APRIL 22 AND 23. THE EXTENSIVE COLLECTION OF LEPIDOPTERA FORMED BY HOWARD VAUGHAN, Esq., F.E.S. MR. J. C. STEVENS will Sell by Auction at his Great Rooms, 38 King Street, Covent Garden, on TUESDAY and WEDNESDAY, APRIL 22 and 22, at half-past 12 precisely each day, the above-named Valuable and Well-known Collection, made with great care, and in which the Specimens are all Authentic, and mostly Labelled, and in the finest condition, and is remarkably rich in VARIE TIES and LOCAL FORMS, and comprises Fine Series of Chrysophanus dispar. Noctua subrosea, and many other Rare and Extinct Species, Valuable Hermaphrodites, Scoparia, and Pterophori. The excellent Cabinets in which the Collection is contained will be included in the Sale. On View the Day prior, 10 to 5, and Morning of Sale, and Catalogues had. The (rambida and Tortrices are not offered on the present occasion, but albe Sold early in MAY, Date of which will be announced in next Advertisement. WILLIAM WESLEY Scientific Booksellers and Publishers, 28 ESSEX STREET, STRAND, LONDON. Just Published, Price 3d. A Classified Catalogue of NEW and SECOND-HAND WORKS in ASTRONOMY, W. WESLEY & SON, 28 Essex Street, Strand, London. 100 Professor of Medicine in King's College, London. HOW TO WORK WITH THE MICROSCOPE. Plates. 215. (Harrison and Sons.) OCK MORALITY AND THE MORAL QUESTION. 2s. 6d. 100 FIGURES OF URINARY DEPOSITS. 55. URINARY AND RENAL DERANGEMENTS AND CALCULOUS DISORDERS, Diagnosis and Treatment. Now Ready, 5s. SLIGHT AILMENTS. Pp. 275. 55. THE MICROSCOPE IN MEDICINE. 86 Plates. 215. LIFE THEORIES AND RELIGIOUS THOUGHT. 5s. 6d. DISEASE GERMS. (Soiled Copies only.) 8s. 6d. London: J. & A. CHURCHILL. THE AGRICULTURAL COLLEGE, PRINCIPAL DR. H. J. WEBB, B.Sc. Thorough practical and scientific Training in Agriculture. Preparation Gr the Colonies. Students gained the First. Third, and Fourth Scholarships of the Royal Agricultural Society, 1888. HENRY EBBAGE, 344 CALEDONIAN ROAD, LONDON. MICROSCOPES for Recreation or Research. A BIOLOGICAL MICROSCOPE, for Analysts, Brewers, Students. reliable instrument, and unsurpassed at the price. 2 Eye-pieces, inch and -inch Objectives, mahogany case, £5 58. With rack to coarse adjustment, £6 68. MOUNTED OBJECTS of every description. see List. Gorgeous Polarizing, Brilliant Opaque, and Entertaining Slides for Evening Exhibitions, 55. dozen. Four dozen Slides sent carefully packed, and postage paid, for 218., to Australian Colonies, Belgium, Canada, France, Germany, India, New Zealand, South Afr.ca. OBJECT CABINETS, Cases with Trays, Racked Boxes. MOUNTING REQUISITES. - Turn-tables, Section-cutters, Knives, PUBLISHED BY J. & A. CHURCHILL THE QUARTERLY JOURNAL OF MICROSCOPICAL SCIENCE, Edited by E. RAY LANKESTER, M.A., LL.D., F.R.S., Honorary Fellow of Exeter College, Oxford, and Jodrell Professor of Zoology in University College, London. With the co-operation of E. KLEIN, M.D., F.R.S., Lecturer on General Anatomy and Physiology at St. Bartholomew Hospital, London; and ADAM SEDGWICK, M. A., F. R. S., Fellow, and Assistant Lecturer of, Trinity College, Cambridge CONTENTS OF No. CXXI., containing 13 Plates, PRICE 105., On Phymosoma varians. By ARTHUR E. SHIPLEY, M. A., On the Structure and Functions of the Cerata or Dorsal Papillæ Further Observations on the Histology of Striped Muscle. By The Spinning Apparatus of Geometric Spiders. By CI: On Chatobranchus, a New Genus of Oligochatous Chatop a The Presence of Ranvier's Constrictions in the Spinal Cord of PROF. BUTSCHLI'S Experimental Imitation of Protoplasma Vol. XXX., with Thirty-Eight Lithographic Plates, is Now Ready, bound in Cloth, Price 425. THE MICROTOMIST'S VADE-MECUM ; a Hand-book of the Methods OF MICROSCOPIC ANATOMY. By ARTHUR BOLLES LEE, Assistant in the Russian Laboratory of Zoology at Villefranche-sur-Mer (Nice) Second Edition, much enlarged, 8vo, 12s. 6d. THE HUMAN FOOT: ITS FORM AND TIONS AND CLOTHING. BY THOMAS S. ELLIS, Consulting-Surgeon to the General Infirmary at Gloucester A MANUAL OF DENTAL ANATOMY, HUMAN AND COMPARATIVE. By C. S. TOMES, M. A., F. R.S. Third Edition, with 212 Engravings, Crown 8vo, 125. 6d. A MANUAL OF BOTANY; Including the Structure, Classifications, Properties, Uses, and Functions of Plants. By ROBERT BENTLEY, Professor of Botany in King's College. Fifth Edition, with 1178 Engravings, Crown 8vo, 15s. KOHLRAUSCH'S INTRODUCTION TO PHYSICAL MEASURE MENTS; with Appendices on Absolute Electrical Measurement, &c. Translated by T. H. WALLER, B.A., B.Sc., and H. R. PROCTER, F.C.S. Second English Edition, with 37 Engravings, 8vo, 15s. FRESENIUS' QUALITATIVE ANALYSIS. Tenth English Edition. Translated from the Fifteenth German Edition and Edited by CHARLES E. Groves, F. R. S. 8vo, 155. OUTLINES OF ORGANIC CHEMISTRY. By H. FORSTER MORLEY, M.A., D.Sc., Joint-Editor of "Watts' Dictionary of Chemistry." Crown 8vo, 7s. 6d. WATTS' INORGANIC CHEMISTRY. Edited by WM. A. TILDEN, D.Sc., F.R.S., Professor of Chemistry in the Mason College, Birmingham. Second Edition, Crown 8vo, 8s. 6d. WATTS' ORGANIC CHEMISTRY. Second Edition, Crown 8vo, 10s. Dr. W. R. HODGKINSON, F.R. S. (Edin.), Professor of Chemistry and Physics in the Royal Military Academy an Artillery College, Woolwich. Assisted by H. CHAPMAN-JONES, F.C.S., Demonstrator in the Royal School of Mine, &c., and F. E. MATTHEWS, Ph. D., Cooper's Hill College. Seventh Edition, 8vo, 8s. 6d. FUEL AND ITS APPLICATIONS. By E. J. MILLS, D.Sc., F.R.S. and F. J. ROWAN, C. E. Being the First Volume of "Chemical Technology, or Chemistry in its Applications to Arts an i Manufactures," edited by CHAS. Ën. Groves, F.R.S., and WM. THORP, B.SC. With 600 Illustrations, Royal 8vo, zor, TECHNOLOGICAL HAND-BOOKS. Edited by JOHN GARDNER, F.I.C., F.C.S., and JAMES CAMERON, F.I.C., Analyst in the Laboratory, Somerset House. BREWING, DISTILLING, and WINE MANUFACTURE. With Engravings. Crown 8vo, 6s. 6d. SOAPS and CANDLES. With Engravings. Crown 8vo, 75. LONDON: J. & A. CHURCHILL, 11 NEW BURLINGTON STREET. |