Ixxxvi 



NA TURE 



[January 12, 1899 



ROYAL INSTITUTION OF 

 GREAT BRITAIN, 



ALBEMARLE STREET, I'lCCAUILLV, \\". 



TUESDAY next (January 17), at Three odock, Prof. E. Rav Lan- 

 KESTER. MA., LL.D., K R.S. First of Ten Lectures on " The .Morpho- 

 'logy of the .Mollusca." One Guinea the Course. 



THURSDAY (January 19), at Three o'clock, A. Henrv Sava<;e 

 Landor, E-iq. First of Three Lectures on "Tibtt and the Tibetans.' 

 Haifa-Guinea. 



S.ATURDAY(Januar>- 21), at Three o'clock, Sir Alexander Campbell 

 Mackenzie, Mus.Doc. First of Three Lectures on, i. " Liszt "' ; 2. 

 *'.Tschaikowsky " ; 3. "Brahms." (With Vocal and Instrumental Illustra- 

 tions.) Half-a-Guinea. 



Subscription to all the Courses in the Season (Christmas to Midsummer), 

 Two Guineas. 



FRIDAY EVF.NING (January 20), at Nine o'clock, Prof. Dewak, 

 -M.A.. LL.D., F.R.S., on ■• Liquid Hydrogen." 



BIRKBECK INSTITUTION, 



BREAMS BUILDINGS, CHANCERY LANE, E.G. 

 Principal — G. Armitage-S.mith, M.-'V. 

 DAY AND EVENING CLASSES. 



Term com 



JANUARY 4. 1899. 



University of London. — Complete Day Courses for all the E: 

 ' tions in Science, and complete Evening Courses for all the Examinations 

 for Science, .\rts, and Law Degrees. 



Science Classes in every Branch, with Practical Work. Well equipped 

 Laboratories for Chemistry, Physics, Biology and Botany. 



U.**iversitv E.XTENSION Lectures on Political Economy and Commercial 

 Geography. 



Classes in Languages, Commercial and English Subjects, Common 

 Law, Bankruptcy, Equity and Conveyancing, Logic, Psychology, and 

 Ethics. 



School of Art (Day and Evening) : Drawing, Painting, Designing, 

 . Modelling, Life Classes, &C. 



Civil Service : Assistant Surveyor of Taxes, &c.. Second Division, ^c. 



Prospectus gratis on application to the Secretary. (Calendar, 6rf.) 



NEW SOUTH WALES. 

 UNIVERSITY OF SYDNEY. 



PROFESSOR OF PHYSICS. 



APPLICATIONS are invited for the above position from University 

 ■ Graduates under 35 years of age. Salary, ^900 per annum Pension 

 ^400 per annum on retirement, under certain conditions, after zo years' 

 service. Duties to commence on June 1, 1S99. If --.uccessful candidate 

 resides in the United Kingdom or America, ^loo allowed for passage 

 expenses to Sydney. 



The instruction to be given by the Professor of Physics should include 

 the experimental treatment of the following subjects, viz.; The Properties of 

 Matter; Statics and Dynamics of Solids, Fluids, and Gases; Electricity. 

 Magnetism, Heat. Sound, and Light. Explanations of a Mathematical 

 character should be given. 



Full particulars of conditions of Appointment, duties, &c., can be 

 obtained from Sir Daniel Cooi-er, Bart., G.C.M.G., Acting Agent- 

 General for New South Wales, 9 Victoria Street. Westminster, London, 

 S.W., to whom application-s, stating age, and accompanied by eight copies 

 of each testimonial submitted, must be sent not later than February iS, 



UNIVERSITY COLLEGE, LONDON. 



The Quain Studentship in Biology (Botany Section) is Vacant. Candi- 

 dates (who must have attended for at least Three Terms one or mure Classes 

 in Botany at the College) should forward their applications to the Sbcke- 

 TA«v by February i. 



They should give particulars of their College Course, and of any dis- 

 tinctions gained at the Univer>ities or elsewhere. 



The value of the Studentship is ;Cioo per annum. The Appointment is 

 for three years. 



T. GREGORY FOSTER, Ph.D., 

 Acting Secretary. 



COACHING. 



CHEMISTRY, PIIVSICS, BIOLOGY. 



All Examinations— Conjoint Hoard, University of Ix)nclon, D. P. H., &c., 

 Theoretical and Practical. Small Cla.sses or Private Tuition. Well-fitted 

 Laboratories. Practical Forensic Medicine. — ** K. C," o Heathcote 

 Street, Cray's Inn Road, London, W.C. 



CURATORSHIP, or similar Appointment, 



i.|i;iri:.l in I.oc.il or Private Museum Good icfcrcntes. -.\ddress, 

 U W. Priest, 21 KIgin Avenue, W. 



J. H. STEWARD'S 



IMPROVED 



MICROSCOPE. 



rRlcl> : 



Stand and Case, only 



£4 10s.; 



OP, complete with 



2 Eye-pieces, 



2 3 and 1 6 



Objectives, 



Double Nose-piece, 



and Iris Diaphrag-m, 



&1 10s. 



ILLUSTRATED 



CATALOGUE 



GRATIS. 



Firm 

 Stand, 



Best 



Fine 

 Adjustment. 



J. H. STEWARD, 



406 STRAND; 457 WEST STRAND, W.C; 

 7 GRACECHURCH STREET, E.G.. LONDON. 



In answer to numerous Enquirers, A. HILCrER begs 

 to state that he is now supplying a simple form of Laboratory 

 Spectroscope suitable for use in Schools and Colleges. The 

 circle is divided through 90°, reading by vernier to i minute. 

 A dense flint prism of good definition, dividing D distinctly, is 

 provided. The slit is adjustable, and has a cnmpari.son prism. 



Price, fompUte in case, £6 IDs. 

 Pocket Spectroscopes, for Rainband and Chemical 

 Observations, from £1 Is 

 Symmetrical Slits. Schultze Cells, and other require- 

 ments for AbsorT)tlon Experiments. 

 Cell Prisms with Quartz or Glass Plates. &c. 

 Micro-Spectroscopes of the highest quality. 

 Instruments for special purposes designed and executed on the 

 shortest notice ; or made from suppti^id designs. 



ADA M n-TFL G E R, 



204 STANHOPE STREET, N.W. 



OPTICAL & SCIENTIFIC INSTRUMENTS. 



Spectrometers, Spcclro>cope>, Goniometers, Latht.tonielers, Optical 

 Benches, &c., &c. Instruments for special purposes cQn>tiuctcd to Ciietltb' 

 own designs. Price List on application. 



W. WILSON {formerly Foreman at Messrs. ELLIOT r BROS.), 



56 Crogsland Road, Chalk Farm, London, N.W. 



Contractor to H.M. Government. 



ESTA&LiSHBD 1890. Telephone, 3539> 



E. W. ALLEN & CO., 



TYPE AND SHORTHAND WRITERS, 



;g Lomb.irci Street, London, E.G. 

 Scienlilic MSS., C.eoligical, Chemic.il, .Medic.il, &c., c.irefuliy, >|uickly, 

 and intetligently copied. Typists and Stenographers sent out for temporary 

 work. Re/trcnces .'•> Fellir.i'S 0/ tlie Royal ami ether Scientific Secitlitt, 

 and Mtmitrt o/tlu Mclual Profession. Terms on .ipplication. 



RESEARCH. 



CIIKMISTRV .vNii riiVSICS. 



Well-fitted L.M!01!.\ TORIES can be used for Research at any hjur 

 convenient to Workers, I.rark Room fur I'hotOKraphic and other Work. 

 Workshop for making Apparatus. Electric Mains for Experiments, — 

 "T.," 4 Heathcote Street, Grays Inn Road W.Q. 



