BRITISH ASSOCIATION FOR THE 

 ADVANCEiMENT OF SCIENCE 



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 BURLINGTON HOUSE. PICCADILLY. LONDON. W. 1 



LIFE Members (since 1843), and all Annual Members who have not inter- 

 mitted their subscriptions from a date anterior to September 14, 1919, are 

 > entitled to receive gratis on demand all Reports (Annual Volumes) published 

 after the date of their membership. 



Annual Members, subject as above, attending an .Annual Meeting are entitled to 

 obtain the Report of that Meeting for an additional payment of 10s. made before 

 or during the Meeting, or of 12s. 6d. made after the Meeting within a period not 

 extending beyond the close of the financial year (June 30). 



The price of any Annual Volume, for the years 1831-1876 inclusive, will be 

 quoted on application to the Office of the Association. 



The publication price of each Annual Volume from 1877 to 1913 inclusive (certain 



volumes, however, are out of print) is £1 4s. ; for 1919 and until further notice, 



£1 5s. 

 The President's Address and Sectional Addresses, bound together, for 1888, 1889, 



1890, 1893, 1893, 1896, 1899, 1900, 1901, 1902, 1909, I910(paper),each Is., 1913. 



1914, 1915(c/o//)), 2s., 1919(Jo.)2s.6(/. 



The President's Address and Sectional Addresses have sincp been published each year 

 under the title of ' The Advancement of Science.' This is out of print for 1 920 and 

 1921; 1922, 1923, 6s., of all booksellers (Murray). 



.Addresses by the Presidents of the Association are obtainable (separalelti) for several 

 vears after 1862, and for all years 1901-1916 (except 1906), each 3J. : for 1919, 

 each 6J. ; for 1920, each Is. ; for 1922, each Is. ; 1923, 1 >. bi 



Manv of the Sectional Presidents' Addresses are obtainable separately for years since 

 1864 down to 1919, each 3d. ; for 1919, each 6d. ; for 1920 and until further 

 notice, each Is. 



Lithographed Signatures of the Members who met at Cambridge in 1833, with the 

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Index to the Reports, 1831-1860, 12s. (carriage included). 



Index to the Reports, 1861-1890, 13s. (carriage extra). 



THE BRITISH ASSOCIATION: A RETROSPECT, 1831-1921. 



By 0. J. R. Howarth, Secretary. 



Published by the 



British Association, Burlington House, London, W.l 



Pp. viii -^ 318, with 13 plates in half-tone. 



7s. 6d. (by post, 8s.) 



