BRITISH ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE, 



22 ALBEMABLE STREET, LONDON, W. 



The next ANNUAL GENERAL MEETING will be held at GLASGOW, 

 commencing on WEDNESDAY, September 6. 



President-Designate, 

 Professor T. ANDREWS, M.D., LL.D., F.R.S., Hon. F.R.S.E. 

 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 be read, are now, as far as possible, determined by Organizing Commit- 

 tees 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 16, addressed thus : — " General Se- 

 cretaries, British Association, 22 Albemarle Street, London, W. For Section 



" If it shoidd 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. 



G. GRIFFITH, M.A., 



Assistant General Secretary, Harrow. 



NEW W T ORK ON SELENOGRAPHICAL ASTRONOMY. 



Now ready, in medium 8vo, with 26 Maps and 5 Plates, price 31s. 6d. 



THE MOON, AND THE CONDITION AND CONFIGURATION OF ITS 



SURFACE. 



By EDMUND NEISON, 



Fellow of the Royal Astronomical Society &c. 



London : Longmans and Co. 



Just published, price 5s. 

 NEW WORK BY PROFESSOR EVERETT. 



Published by the Physical Society of London. 



ILLUSTRATIONS 



OF THE 



CENTIMETRE-GHAMME-SECOND SYSTEM OF UNITS. 



This work is based on the recommendations of a Committee appointed by the 

 British Association, and consists of a collection of physical data concisely pre- 

 sented on the above form, a complete account being added of the Theory of Units. 

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



THE GEOLOGICAL RECORD. ~ 



The First Volume of this yearly publication has been issued. It describes or 

 notices works on Geology, Mineralogy, and Palaeontology published during the 

 year 1874, and contains upwards of 400 pages. 



Copies can be had of Messrs. Taylor and Francis, Red Lion Court, Fleet Street, 

 London. Price Fifteen Shillings. 



The Second Volume, describing works published in 1875, is in hand, and will 

 be published in 1876, at the price of 10s. Qd. to Subscribers and of 16s. after 

 publication. 



The help of Authors and of Scientific Societies will be gratefully received. 

 Communications can be sent to the printers, Messrs. Taylor and Francis (to 

 whom subscriptions should be paid), or to the Editor, W. Whitaker, Geolo- 

 gical Survey Office, Jermyn Street, London. 



[ADVERTISEMENTS continued on 3rd page of Cover. 



