BRITISH ASSOCIATION FOR THE ADVANCEMENT OP SCIENCE, 



22 Albemarle Street, London, W. 



The NEXT ANNUAL GENERAL MEETING will be held at BRISTOL' 

 commencing on Wednesday, August 25. 



President. 

 SIR JOHN HAWKSHAW, C.E., F.R.S., &c. 



Notice to Contributors of Memoirs. — Authors are reminded that, under an ar- 

 rangement dating from 1871, the acceptance of Memoirs, and the days on which 

 they are to be read, are now, as far as possible, determined by Organizing Com- 

 mittees for the several Sections before the beginning of the Meeting. It has 

 therefore become necessary, in order to give an opportunity to the Committees of 

 doing justice to the several communications, that each Author should prepare an 

 Abstract of his Memoir, of a length suitable for insertion in the published Trans- 

 actions of the Association, and that he should send it, together with the original 

 Memoir, by book-post, on or before August 1 1, addressed thus: — " General Secre- 

 taries, 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 in a separate note. 



GEORGE GRIFFITH, M.A., Assistant General Secretary, Harrow. 



Now ready, royal 8vo, 764 pp., cloth, with over 200 Illustrations, price 34s. 



ELEMENTS OF METALLURGY: 



A Practical Treatise on the Art of extracting Metals from their Ores. 



By J. ARTHUR PHILLIPS, M.Inst.C.E., F.G.S., F.C.S., &c, 



Ancien Eleve de FEcole des Mines, Paris. 



" There is certainly no metallurgical treatise in the language calculated to prove 

 of such general utility to the Student seeking sound practical information... . 

 The value of the book is almost inestimable." — Mining Journal. 



" The work possesses intrinsic merits of the highest degree." — Westminster 

 Review. 



London : Charles Griffin and Company, 10 Stationers' Hall Court. 



The Annals and Magazine of Natural History. 



Including Zoology, Botany, and Geology. — Monthly, price 2s. 6d. 

 Complete sets (in Numbers) may be obtained at the following prices : — 



The First Series, in 20 volumes, from 1838 to 1847. Price £6. 



The Second Series, in 20 Volumes, from 1848 to 1857. „ £9. 



The Third Series, from 1858 to 1862, Vols. I. to X. „ £5. 



1863 to 1867, Vols. XI. to XX. „ £6. 



Taylor and Francis, Red Lion Court, Fleet Street, E.C. 



THE LONDON, EDINBURGH, AND DUBLIN 



Philosophical Magazine and Journal of Science. 



A Journal devoted to Physics, Astronomy, Mechanics, Chemistry, Mineralogy, 

 and the Allied Sciences. Monthly, price 2s. 6d. 

 Complete sets (in Numbers) may be obtained at the following prices : — 

 A few sets of the First Series, from 1798 to 1826 (wanting a few plates), in 

 68 volumes. Price ,€12. 

 The Second Series, from 1827 to 1832, in 1 1 volumes. Price £2 4s. 

 The Third Series, in 37 volumes, from 1832 to- 1850. „ £6. 



Taylor and Francis, Red Lion Court, Fleet Street, E.C. 



[ADVERTISEMENTS continued on 3rd page of Cover. 



