BEITISH ASSOCIATION FOB THj: ADVANCEMENT OF SCIENCE, 



22 Albemarle Street/ London, W. 



The NEXT ANNUAL GENERAL MEETING will be held at Brighton, 

 commencing on Wednesday, August 14, 1872. 



President Elect. 

 DR. WILLIAM B. CAUPENTER, LL.D., F.R.S., F.L.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 pubUshed Trans- 

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

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

 cretaries, 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. 



Information about Local Arrangements may be obtained by. application to the 

 Local Secretaries, Royal Pavilion, Brighton. 



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



NEW EDITION OF WEBB'S CELESTIAL OBJECTS. 



Preparing for publication^ in 16mo, with Map, Plate, and several Woodcut 



Illustrations, 



CELESTIALOB JECTS FOR COMMON TELESCOPES. 

 By the Rev. T. W. WEBB, M.A., F.R.A.S., 



Incumbent of Hardwick, Herefordshire. 



Third Edition, revised and improved. 

 London : Longmans, Green, and Co., Paternoster Row. 



BELVILLE'S MANUALS. 



Third Edition. Price Is. 



A MANUAL OF THE BAROMETER. 



Containing an Explanation of the Construction and Method of using the Mer- 

 curial Barometer, with appropriate Tables for CoiTCctions for Temperature, and 

 Rules for obtaining the Dew-point and the Heights of Mountains j also, a De- 

 scription of the Aneroid Barometer. 



By JOHN HENRY BELVILLE, 



of the Royal Observatory, Greenwich. 



By the same Author. Price I*. 

 A MANUAL OF THE THERMOMETER. 



Containing its History and Use as a Meteorological Instrument ; to which is 

 added an Essay on the Vapour-point and Terrestrial Radiation ; also, a General 

 Outline of the Climate of the Eastern parts of England. 



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



In 1 vol. 8vo, with Three Plates, price 15*. cloth. 



EXPERIMENTAL RESEARCHES IN CHEMISTRY AND PHYSICS. 



By MICHAEL FARADAY, D.C.L., F.R.S., 



FuUerian Professor of Chemistry in the Royal Institution of Great Britain. 

 " In conclusion, we can only repeat the assertion with which we commenced 

 this article. This is a book which ought to be in the library of every scientific 

 man." — Literary Gazette. 



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



[ADVERTISEMENTS continued on 3rd page of Cover. 



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