NA TORE 



[June 4, 1896 



N 



N O T I C 



A T U 



B, E 



Of TiirKSHAV NKxr, June ii, will cimtain the 



INDEX 



TO 



Volume LIII. Its price will be One Sihm.ino. 



Advertisements intenrled for insertion in this Number should 



reach the Publishers by the morning of Wednesday, June io. 



"NATURE" OFEICE, 



29 BEDFORD STREET, STRAND. W.C. 



BRITISH ASSOCIATION FOR THE 

 ADVANCEMENT OF SCIENCE, 



BURLINGTON HOUSE, LONDON, W. 

 The NEXT ANNUAL MEETING of the ASSOCIATION will be held 

 at LIVERPOOL, commencing on WEDNESDAY, SEPTEMBER i6. 



Pkesident-Elect : 

 r JOSEPH LISTER, Hart., D.C.L., LL.D., President of the Royal 

 .Society. 



G. GRIFFITH, Assistant General Secretary. 



McGILL UNIVERSITY, MONTREAL, 

 CANADA. 



The Governors of .McGill Univer-ily are prepared to receive .Applications 

 for the following posts : — 



A PROFe'sSORSHIP of ARCHITECTURE. 

 A PROFESSORSHIP of MINING AND METALLURGY. 

 AN ASSISTANT PROFESSORSHIP of CIVIL ENGINEERING. 

 AN .ASSISTANT PROFESSORSHIP of DESCRIPTIVE 

 GEOMETRY and FREEHAND DRAWING. 

 The nature of the work is fully described on pages 18 to 27 of the Uni- 

 versity .Announcement, copies of which may be obtained on application to 

 the Editor of Nature, or the Editor oi Engineering, For further informa- 

 tion apply to the Secretary, McGill College, Montreal. 



In the case of the Professorship of Mining, and of the .Assistant Professor- 

 ship of Civil Engineering, experience in Laboratory work is essential. The 

 Assistant Professor of Civil Engineering should also have a thorough 

 knowledge of Hydraulics. 



Candidates for the Assistant Professorship of Descriptive Geometry and 

 Freehand Drawing should have a knowledge of .Architectural Drawing, as 

 the Assistant Prolessor of this subject will be expected to give assistance to 

 the Professor of .Architecture. 



Candidates for any of the above .Appointments must send their names to 

 the undersigned, together with .a statement of their age. previous career, and 

 ■qualifications, with such Testimonials as they may think desirable, not later 

 than July 14. 



J. W. BRAKENRIDGE, 



Acting .Secret.iry, McGill College. 



BALLIOL COLLEGE, CHRIST 



CHURCH, AND TRINITY COLLEGE, 



OXFORD. 



N.ATURAL SCIENCE SCHOLARSHIPS AND EXHIBITIONS. 

 A Combined Examination for Natural Science Scholarships and Exhib- 

 tions will be held by the above Colleges, beginning on TUESD.AY, 



be offered, the Scholarships 



NOVEMBER 17, 1896. 



Three Scholarships and two Exhibit! 

 being worth .£80 a year. 



The subjects for Examination will be Physics, Chemistry, and Biolog)', 

 but Candidates will not be expected to offer themselves in more than two of 

 thesi 



Particulars may be obtained by applit 

 Christ Church. Oxford. 



A. VERNON HARCOURT. 



BEDFORD COLLEGE (LONDON) 



FOR WOMEN, 



8 and 9 YORK PLACE, BAKER STREET, W. 



ENTRANCE SCHOLARSHIPS. 



One .Arnott Scholarship in Science, Annual Value ^£48, and one Reid 



Scholarship in Arts, Annual Value Thirty Guineas, each tenable for Three 



Years, will be awarded on the result of the Examination, to be held at the 



College on June 23 and 24. 



Names to be sent in to the Principal, not later than June 15. 



LUCY J. RUSSELL Honorary Secretary 



BEDFORD COLLEGE (LONDON) 



FOR WOMEN, 



8 and 9 YORK PLACE, BAKER STREET, W. 



The Professorship in Hygiene at this College will be vacant at the end 



of this Session. Applications, together with Copies of Testimonials, must 



be sent in by June 16, to the Honorary Secretary at the College, from 



whom all information may be obtained. 



FIRTH COLLEGE, SHEFFIELD. 



The Council of Firth College intends to appoint a DEMONSTRATOR 

 and ASSISTANT LECTURER in BIOLOGY, specially qualified in 

 Botany. Stipend, ^1^0. 



Candidates must send in their Applications before June 10. 



Further Particulars can be obtained from Ensok Dkuhv, Registrar. 



WANTED, at the CAMBORNE MINING 



SCHOOL, an ASSISTANT TEACHER capable of teachini; 

 CHEMISTRY, and taking charge of a Laboratory. Preference will 

 be given to one qualified to teach Metallurgy, Mineralogy, Geologj", or 

 Mathematics. Apply immediately. SECRErAKV. 



"^YE L V^^ TON COLLEGE. 



HIGH-CLASS SCHOOL FOR GIRLS. 



For Prospectus, Fees, and Referees, apply to the Principal, 

 Miss HEATH, Yelverton, S. Devon. 



OPTICAL & SCIENTIFIC INSTRUMENTS. 



Spectrometers, Spectroscopes, Goniometers, Calhetometers, Optica 

 Benches^ &c., &c. Instruments for special purposes constructed to Clients 

 own designs. Price List on application. 



W. WILSON (formerly Foreman at Messrs. Elliott Bros.), 

 56 Crog.sland Road, Chalk Farm, London, N.W, 



Manufacturer of 

 ELECTRICAL & PHYSICAL 



INSTRUMENTS, 



44 Hatton Garden, London. 



Catalogues Free. 



BRADY & MARTIN'S RECD. VACUUM TUBE 



{Regd. No. 272103) fur the " NEW PHOTOGRAPHY," 



Each 21/- Post Free. 



BRADY & MARTIN'S NEW SCREEN 



With this SCREEN and B. and M.'s TUBE, good Photographs ol the 

 hand are taken in tiuo seconds with a five-inch Coil and proportionately with 

 smaller Coils. Prices : for Half-Plate, 5S. ; Whole Plate. 8s. 6d.,Post Free. 



BATTERIES, INDUCTION COILS, &c 



1 application 



BRADY & MARTIN, 



SCIENTIFIC INSTRUMENT MAKERS, 

 NEWCASTLE - ON - TYNE. 



SELEmUM CELLS 



FOR EXPERIMENTS WITH 



XZ, O IV T <3- E ]N' R-A.'SrS 



{See Nature, June 4, 1896, p. 109) 

 A RE MADE AND SOLD B V 



P. J. KIPP & ZONEN (J. W. CILTAY, OPVOLCER), 



DELFT, HOLLAND. 



"^-KA.'SrS." 



FLUORESCENT SCREENS, 



6" X 8", I ox. i>d. post free. 

 Most carefully prepared ; each Screen tested and guaranteed. Th bone>- 

 of the body can be easily e.xamined, and Photographs taken with one H-inute'-. 

 e,\posure or less through these excellent Screens, with great clearness. A 

 Stereoscopic Dark Box, to fit the Screens, will be ready in a few days, 9*. 61/. 



Address, H. LEES, CASTLETOWN, ISLE OF MAN. 



THE ALBION S.S. COMPANY (LIMITED). 



FORTNIGHTLY CRUISES from NEW- 



CASTLE-ON-TYNE to NORWAY. 



The Finest YACHTING STEAMER aHoat. No Upper Berths 



"MIDNIGHT SUN," 3178 Tons, 3500 H.P. 



Capt. CABORNE, R.N.R., F.R.G.S. 



Sailings : — June 6, 2o ; July 4, 18 ; August r and 15. 



Fares from 12 Guineas, including first-class Table. 



For Itinerary, &c., apply to "MIDNIGHT SUN" PASSENGER 



SUPERINTENDENT 4 Lombard Street, Newcastle-on-Tyne. 



