xcvm 



NATURE 



\_7uly 24, 1879 



WANTED, Clean Copies of NATURE, No. 472, 

 for November 14, 1878. Address — Office of 

 NATURE, 29, Bedford Street, Strand. 



MICROSCOPIC OBJECTS 



Of luperlative perfection, illustntting Histology and eveiy branch of Micro- 

 scopy. Catalogue post free and gratii on application. 



PARIS UNIVERSAL EXHIBITION, 1878. 



Prite Medal awarded for Excellence, Variety, b'c. 

 EDMUND WHEELER, 48N,Tollmeton Road, Holloway, London, N. 



BRITISH ASSOCIATION FOR THE 

 ADVANCEMENT OF SCIENCE, 



22, ALBEMARLE STREET, W. 



The NEXT ANNUAL GENERAL MEETING will be held at 

 SHEFFIELD, commencing on WEDNESDAY, August 20. 



Presidhkt-Elect. 



Ptof. G. J. ALLMAN, M.D., LL.D.. F.R.S.L. and E., M.R.I.A. 

 Pres. L.S. 



NOTICE to CONTRIBUTORS of MEMOIRS.— Authors are reminded 

 that, under an arrangement dating from 1871, the acceptance of Memoirs. 

 and the days on which they are to he read, are now, as far as possible, de- 

 termined by Organising Committees for the several Sections hrfore the begin- 

 niH£ 0/ the Meeting. It has therefore become necessary, in order to give 

 an opportunity to the Committees of doing justice to the several communica- 

 tions, that each Author should prepare beforehand an Abstract of his 

 Memoir, of a length suitable for insertion in the published Transactions of 

 the Association, and the Council request that he will send it, together with 

 the original Memoir, by book-post, at once, addressed thus :— " General 

 Secretaries, British Association, 22, Albemarle Street, London, W. For 



Section " If it should be inconvenient to the Author 



that his Paper should be read on any particular day, he is requested to send 

 information thereof to the Secretaries m a separate note. 



No Report, Paper, or Abstract can be inserted in the Report of the Asso- 

 ciation unless it is in the Assistant-Secretary's hands before the conclusion 

 •£ the Meeting. 



J. E. H. GORDON, Assistant-Secretary. 



FIRTH COLLEGE, SHEFFIELD. 



A PRINCIPAL is wanted for this Institution, which is under the govern- 

 ment of a Council embracing representatives of the Universities of Oxford, 

 Cambndgc, and London, and various public bodies. He will be required to 

 take an active part in the teaching, as well as to devote himself to the gene- 

 '^Lv^""^'^"""' °^ ''"* College and to the promotion of its success. 



The Principal's salary will be;<;3oo per year, together with half of the fees 

 of lus own classes and 10 per cent, of the fees of the remaining classes. The 

 total sala-y to be guaranteed not to fall short of £\<x per annum. 



Zren? Candidate is requested to give particulars of his age, education, and 

 academiCil experience, the subjects he is prepared to teach, and also to fur- 

 nish the names of three gentlemen to whom reference may be made. Testi- 

 monials n;td not be forwarded unless asked for, and no personal application 

 ZDUSt be made to Members of the Council 



Further particufers may be obtained of 



„._, „ „ ou »■ w T , „ J'^O- ^- ^lOSS, Secretary. 



Futh College, Sheffield, July 8, 1879. 



SIR JOSIAH MASON'S SCIENCE 

 COLLEGE, BIRMINGHAM. 



It is intended to OPEN this College in the month of OCTOBER, 1880. 



The full staff of Professors will include those necessary to enable Students 

 to pass the Examinations of the University of London for the degrees of 

 B.Sc. and D.Sc. 



The Professors of Mathematics, Physics, Chemistry, and Biology (includ- 

 ing Botany and Zoology), will be the first appointed. 



The appointments will be made for a term of three years, renewable at 

 the pleasure of the trustees. The stipend in each case will be £250 per 

 annum, with half the class fees. 



Applications from Candidates must be forwarded not later than the 31st 

 of December next to the Hcnorary Secretary to the Trustees, Mr. G. j. 

 Johnson, 36, Waterloo Street, BirminEham, from whom any further infor- 

 mation may be obtained. 



By a resolution of the Trustees, Candidates are specially requested to 

 abstain from canvassing. 



ASTRONOMICAL TELESCOPES. — Cal- 



VER'S REFLECTING TELE.SCOPESof the highest excellence, from 

 si m. to 36 in. aperture,; jj in., with equatorial motion, jf 15 15^. ; 6 in. 

 equatorial, complete, from i,i%. Photo, with Calver's ' ' Hints on Silvered 

 Glass Reflecting Telescopes," 9 stamps.— G. CALVER, F.R.A.S., Hill 

 House, Widford, Chelmsford. 

 FOR SALE.— A very fine 15J in. E QUATORIAL, with Clock. 



FOR SALE.— NATURE, Vols, i fo 19, in 



good condition.— For particulars as to price, &c., apply to W. H. Rad- 

 FoaD, 56, Ludgate Hill, E.C. 



LIVING SPECIMENS FOR THE MICROSCOPE. 



THOMAS BOLTON, MICROSCOPIST'S and NATURALIST'S 

 STUDIO, 17, ANN STREET, BIRMINGHAM. 



T. B. has last week posted to his subscribers specimens of Nostoc commune 

 with sketch and description. He has also sent out some more marine 

 organisms, as well as some Chara in fructification and Volvox glohator, &c. 



Weekly announcements will be made in this place of organisms T. B. 

 is supplying. 



Specimen Tube, One Shilling, post-free, 



Twenty-six Tubes in course tf Six Months/or Suliscriftion t/ £i js. 



Price List of Specimens on application, with stamped addressed envelope. 



Portfolio of Dkawi.vgs, One Shilling. 



ST. THOMAS'S HOSPITAL, ALBERT 

 EMBANKMENT, S.E. 



The WINTER SESSION, 1879.80, will commence on OCTOBER ist. 



TWO ENTRANCE SCIENCE SCHOLARSHIPS of ;£6o and £to, 

 OPEN to all First Year's Students, without the condition of their having 

 first entered as Students of the Hospital, will be awarded in the first week of 

 Oaober. Subjects : Chemistry and Physics, with either Botany or Z'wloey. 

 at option. SPECIAL CLASSES for the PRELIMINARY SCIENTIFIC 

 of University of London, with Practical Work in Laboratories and Museums, 

 are to be held from October to July, and for the ist M.B. from January to 

 July. 



Several Medical Practitioners in the neighbourhood receive Students for 

 residence and supervision, and a register of inspected and approved lodgings 

 u kept in the Secretaiy's office. 



Prospectus and all particulars may be obtained from the Secretary, Dr. 

 Gillespie, at the Hospital. 



W. M. ORD, M.D., Dean. 



A GENTLEMAN (Scientific and Manufac- 

 turing Chemist) who intends going for a three months' voyage to the 

 West Indies and the South of the United States is desious of being 



intrusted with a Commission where his knowledge might be utilised. 



G. K., care of Willing's Advertising Offices, 301, Strand. 



FOR SALE.— COMPLETE APPARATUS 



for SPARK SPECTRA, consisting of Spectroscope, i Prism in pine 

 case. Circle divided reading with a Vernier, Browning's Spark Con- 

 denser with Becquerel's apparatus for solids and liquids. Gaiffe's Coil, 

 2-inch Spark, Bichromate Battery, 4 Cells, Plates removable from excit- 

 Si. ing liquid; whole new a few months ago.— Apply P. H., OfTice of 

 Nature, Bedford Street, Strand, W.C. 



UNIVERSITY COLLEGE OF WALES. 



A PROFESSOR of NATURAL SCIENCE is required. Comm.ncing 

 Salary, ;^25o per Session, with rooms in College. 



Applications to be addressed, on or before August 7, to the Hon. Secs. 

 7, Queen Victoria Street, London, E.C. '' 



LIBRARY OF HARVARD UNIVERSITY, 

 CAMBRIDGE, MASS., U.S.A. 



Packages for the General Libraiy, or for any of the Departnienla) 

 Libraries (Astronomical Observatory, Botanic Garden, Bussey Institution 

 Divinity School, Law School, Museum of Comparative Zoology Sci.-ntific 

 School), may be sent to the Agents, Messrs. TrObner & Co? 57 and so. 

 Ludgate Hill, London. ^^ 

 JUSTIN WINSOR, Librarian. 



LABORATORY, 38, GRACECHURCH STREET, LONDON, E.C. 



A. ANTHONY NESBIT, F.C.S., 



WATER ANALYST, 



Performs every description of Water Analysis on moderate terms. 

 Properly cleansed bottles for the reception of samples sent to any njut of 

 the K ingdom. 



DUNHEVED COLLEGE (LIMITEdT 



LAUNCESTON, CORNWALL '* 



Seven hours from London. Separate Bedrooms. Systematic Teachina 

 in Science, Foreign Languages, and University Courses. 

 Calendar post free from 



The Principal— BENJAMIN RALPH, LL.B. Dub. 



FOR SALE.— INDIAN ELEPHANT] 



SKELETONS, two monsters, neariy twelve feet high, one macerated j 

 the other not ; one has tusks valued at Rs. 400 ; to be sold, a bargain. 1 

 Can be seen at 6, Somerset Villas, Lordship Road, Stoke Newington, 



London. 



Several Skins of Elliott's Pheasant on hand. 



DIAMONDS IN MATRIX. 



R. C. NOCKOLD, Diamond and Oriental Stone Cutter and Dealer, ha 

 for sale specimens of the above : also Cut Precious Stones in all Colours. 

 12, FRITH STREET, SOHO, W. 



