Just Issued : free on application. 



(No. 230.) A CATALOGUE OF BOOKS on the MATHEMATICS, pure 

 and applied, containing many works of the Old Mathematicians. 

 Mathematical and Astronomical Journals, Observations, &c. ; inclu- 

 ding many from the Libraries of the late Arthur Buchheim, M.A., 

 and E. Temperley, M.A. (Part I. A— L.) On Sale by MACMILLAN 

 AND BOWES, CAMBRIDGE. 



(No. 231.) A CATALOGUE OF BOOKS on the MATHEMATICS, 

 pure and applied. (Part II. L— Z.) On Sale by MACMILLAN 

 AND BOWES, CAMBBIDGE, 



[For this Catalogue see end of this Magazine.'] 



BRITISH ASSOCIATION FOR THE ADVANCEMENT OF SCIENCE, 



The next ANNUAL GENERAL MEETING will be held at LEEDS, 

 eommencing on WEDNESDAY, September 3. 



President- Meet, 

 Sir FREDERICK AUGUSTUS ABEL, C.B., D.C.L., D.Sc, F.R.S., 



V.P.C.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 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 pub- 

 lished Transactions of the Association, and the Council request that he will send 

 it, together with the original Memoir, by book-post, on or before August G, 

 addressed thus : — " General Secretaries, British Association, 22 Albemarle Street, 



London, W. For Section " Authors who comply with this request, 



and whose Papers are accepted, will be furnished before the Meetino- with 

 printed copies of their Reports or Abstracts. 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. 



Medium 8vo. Vol. I. Part I., 4s. ; Part II., 7s. 6d. 



PHYSICAL MEMOIRS, 



SELECTED AND TRANSLATED FROM FOREIGN SOURCES 



UNDER THE DIRECTION OF THE 



PHYSICAL SOCIETY OF LONDON. 



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



41 55 



