Sold by Harrison and Sons, St. Martin’s Lane. 
Demy 8vo, pp. 427. Price, 12?. 6(7. 
THE RECOED OF THE ROYAL SOCIETY, 
Second Edition. 1901. 
Containing an Account of the Foundation, History, &c., of the Society, with a Chronological List and 
Alphabetical Index of the Fellows from the Foundation. 
Demy 8vo, pp. 265. Price 5s. 
THE YEAR-BOOK OF THE ROYAL SOCIETY, 1903. 
Principal Contents:—List of Fellows, Committees, &e.; Statutes and Kegulations; Business of the 
Society during 1902, including Anniversary Meeting with President’s Address, Council’s Report, and 
Ti-easurer’s Accounts; Arrangements for 1903; Obituary Notices of Fellows deceased. 
PHILOSOPHICAL TRANSACTIONS. 
Series A. Containing Papers of a Mathematical or Physical Character. 
VoL. 199 (1902), Price £1 6s. 
VoL. 200 (1903), Price £2 3s., with 39 Plates. 
Series B. Containing Papers of a Biological Character. 
VoL. 194 (1901), Price £3, with 49 Plates. 
VoL. 195 (1902), Price £1 7s. 6(7., with 16 Plates. 
Published by Clay and Sons, Aye Maria Lane. 
CATALOGUE OF SCIENTIFIC PAPERS, 
COxMPILED BY THE ROYAL SOCIETY. 
The volumes on sale as follows :—Vols. 1-6 (1800-63), cloth (vol. 1 in half-morocco), £4 net; half- 
morocco, £5 .5s. net. Vols. 7, 8 (1864-73), cloth, £1 11s. 6(7. net; half-morocco, £2 5s. net. Single 
vols., cloth, 20s.; half-morocco, 28s. net. Vols. 9, 10 (1874-83), cloth, £1 5s. net; half-morocco, 
£1 12s. net. Vol. 11 (1874-83), cloth, £1 5s. net; half-morocco, £1 12.s. net. Vol. 12 (Supple¬ 
mentary, 1800-1883), cloth, £1 5s. net; half-morocco, £1 12.s. net. 
A reduction of price to Felloivs of the Royal Society. 
Published by Kegan Paul, Trench, Trubner, and Co. 
A few copies at the reduced price of £1 Is. (published at £3). 
Rcyal 4to. pp. iv.—936, cloth. With 51 Lithographic and Photographic Plates 
A MONOGRAPH OF THE HORNY SPONGES. 
By R. von LENDENFELD. 
A further reduction of price to Fellows of the Royal Society. 
Published by Kegan Paul, Trench, Trubner, and Co. 
In 1 vol., 4to. Pp. 500. With 6 Chromolithographs of the remarkable Sunsets of 1883 and 
40 Maps and Diagrams. 
THE ERUPTION OF KRAKATOA AND SUBSEQUENT PHENOMENA. 
Report of the Krakatoa Committee of the Royal Society. 
Edited by G. J. SYMONS, F.R.S. 
Price 30s. To Fellows of the Royal Society and Royal Meteorological Society, 20s. 
Published by Kegan Paul, Trench, Trubner, and Co. 
Royal 4to, pp. xiv.—326, cloth. Price 21s. 
OBSERVATIONS OF THE INTERNATIONAL POLAR EXPEDITIONS, 
1882-1883. 
FORT RAE. 
With 32 Lithographic Folding Plates. 
A reduction of price to Fellows of the Royal Society. 
Continental Agents for the publications of the Royal Society, Messrs. Friedlander and Son, Berlin, 
