October 27, 1910] 



NATURE 



DERBYSHIRE EDUCATION 

 COMMITTEE. 



CHESTERFIELD GIRLS HIGH SCHOOL. 



rhe Governors inviie appHcations for Ihe post of HEADMISTRESS 

 ihe above School. Candidates must be Graduates of a University or 

 ve an equivalent qualification. Commencing salary, £-2^0. 

 \pplications, to be made in writine (on foolscap paper) and accompanied 

 copies of three recent testimonials, should be addressed to the under- 

 ned on or before November 21, iqio. 



NIVERSITY COLLEGE OF SOUTH 

 WALES AND MONMOUTHSHIRE. 



'LEG PRIF.\THROFAOL DEHEUDIR CVMRU A MVNWY. 

 'he Council of the College invites applications for the post of REGIS- 

 lAR. The salary vill be ^400 per annum. 



"urther particulars may be obtained from the undersigned, by whom 

 -lications, with not more than four testimonials, must be received on or 

 ore Wednesday, November 2, 1910, 



D. J. A. BROWN, Acting-Registrar. 

 Tniversity College, Cardiff, 

 October, iQio. 



SCIENCE AND MATHEMATICAL MASTERS. 



January (1911) Vacancies. 



'■raduates in Science and other well-qualified masters seeking posts in 

 id other Schools should apply at once, giving full details as to 



nd enclosing copies of t 

 MESSRS. GRIFFITHS, SMITH, POWELL & SMITH, 



Tutorial Agents (Estd. .833), 

 34 Bedford Street, Strand, London. 



Immediate notice of all the best vacancies will be sent. 



CITY AND GUILDS OF LONDON 

 INSTITUTE. 



ipplications are invited for the post of DEMONSTRATOR OF AP- 

 lED MECHANICS AND MATHEMATICS at the City and Guilds 

 rhnical College, Finsbury. He will be required to take charge of the 

 boratory of Applied Mechanics. Candidates must have had a college 

 ining and practical engineering e.xperience. Salary, ;£ioo per annum, 

 pies of the Programme of the College and particulars of the conditions 

 ached to the appointment may be obtained on application to the Regis- 

 \K, City and Guilds Technical College, Leonard Street, Finsbury, 

 idon, E.C. 



BIRMINGHAM MUNICIPAL 

 TECHNICAL SCHOOL. 



plications are invited for the post of SENIOR LECTURER in 

 THEMATICS. Commencing salary, ;£2oo. Appointment to date (if 

 iible) from January i, igir. Applications by November 25, 1910. For 

 particulars apply to 



GEO. MELLOR, Secretary. 

 >ffices of the School, Suffolk Street, 

 October 19, rgio. 



CIVIL SERVICE COMMISSION. 



FORTHCOMING EXAMINATION. 

 ;ART0GRAPHERS in 

 niralty (17-25), November 

 'he date specified is the latest at which applications can be received. 

 :y must be made on forms to be obtained, with particulars, from the 

 :retarv. Civil Service Coram ssion, Burlington Gardens, London, W. 



Hydrographic Department of the 



UNIVERSITY OF MANCHESTER. 



ify't^'j?;;?,.''"^ '""'"='' '"' ""= P°" "f SENIOR DEMONSTRATOR 

 JD ASSISTANT LECTURER IN ZOOLOGY, now vacant in con- 

 uence of the appointment of Dr. W. D. Henderson to the Lectureship 

 Zoology in the University of Bristol. Details as to the emoluments of 

 post and further particulars may be obtained on application to the 

 :cisTRAK. Applications must be sent in before Monday, October 31. 



JITISH BIRDS' EGGS.-For Sale, with 



cabinet, over two thousand Eggs, in sets. They represent nearly all 

 the birds breeding in British Islands. All in perfect older and con- 

 dition. To be had a bargain. Particulars on application to " Avts " 

 c/j Mr. O'Neil, Post Office, Handswor;h, Birmingham. 



OR SALE. — Analytical Balance of superior 



make by Becker— sensible ,'„ milligramme ; never been used ; bought 

 d"!J''£'u"'[' '^^',^ Guineas. A genuine ba.gain.-OwEN, 3 Adelaide 

 Road, Shepherds Bush. 



BROWNING'S 

 SPECTROSCOPES. 



THE MINIATURE SPECTROSCOPE. 



These Instruments will show many of the F 

 lines of the metals and gases, and the absorptit 

 crystals or liquids, and may be used for sho 

 experiments in Spectrum Analvsis. They are 

 three prisms at prices from 20s. to 35s., 



nuch 



sper.' 



unhofer lines, the bright 

 bands in coloured gases, 

 ng many of the leading 

 ide with combinations of 

 th five prisms, giving 



tly, at prices from 25s. 6d. to 70s. 



nd therefore showing the lines and bands 



RAINBAND SPECTROSCOPE (Graces). 



This instrument is specially adapted for predicting coming rain. It is a 

 very powerful, portable, and efficient speclroscope, and is applicable to 

 every purpose for which a Direct Vision Spectroscope can be used. 

 Prices : £3 8 6, £4 O O, and £5 15 



" HOW TO WORK WITH THE SPECTROSCOPE " 



By JOHN BROWNING, F.R.A.S., &c. Fourth Edition, entirely 

 rewritten and revised. Price 9d., or with Coloured Chart of 14 

 Spectra, Is, 6d. Post Free. 



Price Lists 0/ S/>ectroscofes, Telescopes, b'c. Post Free. 



Ka^n, 146 STRAND, LONDON 



hsTAn. 171.5 Tel. No. : 7 804 Central. 



H.M. DOCKYARD SCHOOLS. 



WANTED, a JUNIOR ASSISTANT MASTER. Candidates must 

 possess a University degree or some equivalent qualification, and should 

 have had experience in laboratory work. 



The scale of salary is /150, rising to £,2aa by annual increments of ;£io, 

 with a pension and prospects of promotion. Duties will commence on 

 January i, tgii. 



Applications should be addressed to the Secretary of the Admiralty 

 (C. E.), Whitehall, London, S.W. 



UNIVERSITY OF MANCHESTER. 



A Course of about Twenty Lectures on " FOSSIL REPTILIA" will be 

 given by Mr. D. M. S. Watson, M.Sc, on Mondays, Wednesdays, and 

 Fridays, at 5 p.m. First Lecture, November 7 next. Fee, (,\ \s. 



FOR SALE.— Contents of the private 



Chemical Laboratory of a gentleman going 

 abroad. Comprising large collection of Metallic .tnd Organic 

 Compounds, large stock of Glass and Iron Chemical Apparatus, 

 Combustion Furnace, T.jpler Mercury Pump, Gas Analysis Apparatus, 

 Glass Taps, 7-inch Haivey & Peak's Induction Coil, X-Ray Tubes 

 and Screens, Gas Cylinders, Reagent Bottles, Rare Minerals, &c.| &c. 

 Can be seen by appointment. Apply "C, Box 6, " c/o Nature. 



OLD PLATINUM, GOLD 



Scrap, &.C., valued or purchased. 



SPINK & SON, Ltd., 



17 & IS PICCADILLY, W., and at 

 6 KING STREET, ST. JAMES', LONDON, S.W. 



ESTD 1772. 



Gems for experimental work at moderate prices. 



PLATINUM. 



Extraordinary prices 



given for platinum scrap Cash or 

 offer by return post. 40 ozs. wanted 



-R. OLPHERT. Jeweller, tg Elm Grove Parade, Barnes, S.W. 



,ondon. City and Midland (Barnes br.inch). 500 ozs. wanted. 



TYPEWRITING OF HIGHEST QUALITY. 



General MSS., loa'. per looo words. Carbon copies, 3(/. per looo words. 



Accuracy Guaranteed. 



NORA DICKINSON, 1 Sackville Gardens, Ilford, Essex. 



