MESSRS. MACMILLAN & & CO.'S COMPLETION OF PROF. MICHAEL FOSTER'S "PHYSIOLOGY." E CHEMICAL BASIS OF THE ANIMAL BODY. An Appendix to Foster's "Text-book of Physiology." Fifth Edition. By A. SHERIDAN LEA, M. A., D.Sc., F.R.S., University Lecturer in Physiology in the Unive sity of Cambridge; Fellow of Caius College. The following appendix has been written upon the same lines as in former editions, save that it has been enlarged, and in reality constitutes a treatise on the chemical substances occurring in the animal budy. As in former editions it is entirely the work of 4. Sheridan Lea. The refrences given, though extensive, are not intended to be exhaustive. An effort has been made to make ferences to recent works as complete as possible, other references are to papers, which them elves give full references, and will thereerve as a guide to literature of the subject; and some have been inserted in order to inform the student of the dates at which rtant results were first described."-From the Preface. IE ALGEBRA OF COPLANAR VECTORS AND TRIGONOMETRY. By R. BALDWIN HAYWARD, M. A., F. R.S., Senior Mathematical Master in Harrow School, formerly Fellow of St. John's College, Cambridge. Crown 8vo, Cloth. BY MR. CHARLES BOOTH. FE AND LABOUR OF THE PEOPLE IN LONDON. Edited by CHARLES NEW BOOK ON THE THEORY OF WAGES. Vol. III. BLOCKS OF BUILDINGS, IE THEORY OF WAGES AND ITS APPLICATION TO THE EIGHT HOURS QUESTION AND OTHER LABOUR PROBLEMS. By HERBERT M. THOMPSON, M.A. NEW BOOK BY MR. FRANCIS GALTON. NGER PRINTS. By FRANCIS GALTON, F.R.S. TIMES:-"The whole subject is handled with that rare patience and thoroughness in investigation, and that keen but ous acumen in interpretation which are characteristic of all Mr. Galton's work." WITH NEW PREFATORY CHAPTER. EREDITARY GENIUS: An Enquiry into its Laws and Consequences. FRANCIS GALTON, F.R.S. New Edition. BY DR. S. H. KELLOGG. RELIGION. By The L. P. Stone IE GENESIS AND GROWTH OF NEW AND REVISED EDITION. ODERN VIEWS OF ELECTRICITY. BY OLIVER J. Lodge. D.Sc., LL.D., Professor of Physics in University College, Liverpool. With Illustrations. NEW VOLUME. Now ready, Crown 8vo, Cloth, 5s. [Nature Series. PERIMENTAL EVOLUTION. Lectures delivered in the "Summer School of SECOND EDITION, REVISED. GHT: A COURSE OF EXPERIMENTAL OPTICS, CHIEFLY WITH THE LANTERN. By LEWIS WRIGHT, Author of "Optical Projection: a Treatise on the Use of the Lantern." Second Edition. Revised and Enlarged. The present edition is somewhat enlarged and in some respects modified. Further consideration has led me to revise the method der of treatment as regards some of the phenomena of polarised light. Some attempt has been made, though briefly, to show the I relation and bearing of recent discoveries by Hertz, Lippmann, and others. Having also received many proofs of the delight struction afforded by the beautiful mica polarising preparations first described by Mr. C. J. Fox, and having carried the ng and preparations of such illustrations very much further since the work originally appeared, I have added full details of ing of the kind devised to the present date, and of the practical manipulation of mica films. These paragraphs will constitute = the principal additions. TO H.RH. THE PRINCE OF WALES, THE EMPRESS OF GERMANY,& SPECIALTIES INVALIDS BRAND & CO.'S AI SAUCE A FINE TONIC AND An excellent relish for "fish, is and fowl." SPECIALITIES. 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Barometers, Microscopes, Telescopes, Magic Lanterns, &c., &c. Illustrated Price Lists posted free to all parts of the World. NEGRETTI & ZAMBRA, OPTICIANS AND SCIENTIFIC INSTRUMENT MAKERS TO THE QUEEN, HOLBORN VIADUCT, E.C. Branches-45 CORNHILL; 122 REGENT STREET. Photographers at the CRYSTAL PALACE. N. & Z.'s Large Illustrated Catalogue, 1200 Engravings, Price 5s. 6d. Telephone No. 6583. Telegraphic Address: Negretti, London. ROYAL INSTITUTION OF GREAT BRITAIN, ALBEMARLE STREET, PICCADILLY, W. LECTURE ARRANGEMENTS BEFORE EASTER, 1893. LECTURE HOUR, THREE O'CLOCK P.M. CHRISTMAS LECTURES. Sir ROBERT STAWELL BALL, M.A., LL.D., F. R.S., Lowndean Professor of Astronomy and Geometry in the University of Cambridge. Six Lectures (adapted to a Juvenile Auditory) on Astronomy." On December 27 (Tuesday), Dec mber 29, 31, 1892; January 3, 5, 7, 1893. One Guinea the Course; Children under 16, Half-a-Guinea. Prof. VICTOR HORSLEY, F. R.S., F. R.C.S., M.R.I., Fullerian Professor of Physiology, R. I. Ten Lectures on "The Structure and Functions of the Nervous System-The Functions of the Cerebellum and the Elementary Principles of Psycho-Psychol gy." On Tuesdays, January 17, 24, 31; February 7, 14, 21, 28; March 7, 14, 21. One Guinea the Course. Prof. PATRick Geddes, Four Lectures on "The Factors of Organic Evolution. On Thursdays, February 9, 16, 23; March 2. Half-a-Guinea. The Rev. AUGUSTUS JESSOPP. D.D. Three Lectures on "The Great Revival-A Study in Medieval History." On Thursdays, March 9, 16, 23. Half-a Guinea. Prof. C. HUBERT H. PARRY, Mus. Doc., M. A., Professor of Musical History and Composition at the Royal College of Music. Four Lectures onExpression and Design in Music" (with Musical Illustrations). On Saturdays, January 21, 28; February 4. 11. Half-a-Guinea. The Right Hon. LORD RAYLEIGH, M. A., D.C. L., LL. D., F.R.S., M. R.I.. Professor of Natural Philos phy, R.I.-Six Lectures on "Sound and Vibrations.' On Saturdays, February 18, 25; March 4, 11, 18, 25. One Guinea. UNIVERSITY COLLEGE OF SOUTH WALES AND MONMOUTHSHIRE, CARDIFF. FACULTY OF MEDICINE. The Council is about to proceed to the Appointment of a PROFESSOR 4 ANATOMY and a PROFESSOR of PHYSIOLOGY. The Stipend a each case will be £350 per Annum. Applications, together with Printed Copies of Testimonials, must be in on or before FEBRUARY 10, 1893. For further Particulars apply to IVOR JAMES, Registra University College, Cardiff, December 13, 1892. UNIVERSITY OF GLASGOW. MEDICAL EXAMINERSHIP. The Office of ASSISTANT EXAMINER in ZOOLOGY has become Vacant. The Salary is £30 per Annum, and the Appointment is from January 1, 1893, for the remainder of the late holder's term of office, which expires April 1, 1895 Candidates must lodge 20 Printed Copies of their Applications and Ter monials with the Secretary to the Court, Mr. ALAN E. CLAPPERTON, 91, West Regent Street, Glasgow, on or before JANUARY to nest. HANOVER SQUARE.-Two Sets of Rooms (with Use of Meeting Room), adapted for Scientific Societies to be Let -Apply to J. BARROW, 3 Hanover Square, W. To Collectors and Buyers of Precious and Fancy Stones.-R. C. NOCKOLD, Diamond and Oriental Stone Me chant, 12 Frith Street, Soho, W., has a very large assortment of Specmen Stones, cut and uncut. Inspection invited. Subscription (to Non Members) to all the Courses during the Season, ALBERT EDWARD JAMRACH Two Guineas. Tickets issued daily at the Institution, or sent by post on receipt of Cheque or Post-Office Order. Members may purchase not less than Three Single Lecture Tickets, available for any Lecture, for Half-a-Guinea. The FRIDAY EVENING MEETINGS will begin on January 20, at 9 p.m., when Prof. DEWAR will give a Discourse on "Liquid Atmospheric Air." Succeeding Discourses will probably be given by Mr. FRANCIS GALTON, Mr. ALEXANDER SIEMENS, Prof CHARLES STEWART, Prof. A. H. CHURCH. Mr. EDWARD HOPKINSON, Mr. GEORGE SIMONDS, Sir HERBERT MAXWELL, Bart., the Right Hon. Lord RAYLEIGH, And other Gentlemen. To these Meetings Members and their Friends only are admitted. Persons desirous of becoming Members are requested to apply to the SECRETARY. When proposed they are immediately 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. PENYWERN HOUSE MILITARY AND ENGINEERING COLLEGE, 2 PENYWERN ROAD, EARL'S COURT, S.W. PRINCIPAL-G. W. DE TUNZELMANN, B.Sc., M.I.E. E. Telegrams-" Tunzelmann, London." PUBLIC SERVICE AND UNIVERSITY DEPARTMENT.-For students preparing for the various branches of the Public Service or for Scholarships at, or entrance into, the Universities and Hospitals. 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