Sold by Harrison and Sons, St. Martin’s Lane. 
Demy 8vo, pp. 427. Price, 12s. %d. 
THE KECOHD OF THE EOYAL SOCIETY. 
Second Edition. 1901. 
Containing an Account of tlie 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 YEAE-BOOK OF THE EOYAL SOCIETY, 1903. 
Principal ContentsList of Fellows, Committees, &c.; Statutes and Eegulations; Business of the 
Society during 1902, including Anniversary Meeting with President’s Address, Council’s Eeport, and 
Treasurer’s Accounts; Arrangements for 1903; Obituary Notices of Fellows deceased. 
PHILOSOPHICAL TE AN S ACTION S. 
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. U., with 16 Plates. 
Published by Clay and Sons, Aye Maria- Lane. 
CATALOGUE OF SCIENTIFIC PAPEES, 
COMPILED BY THE EOYAL SOCIETY. 
The volumes on sale as follows :—Yols. 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. 6d. 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 12s. net. Vol. 12 (Supple¬ 
mentary, 1800-1883), cloth, £1 5s. net; half-morocco, £1 12s. net. 
A reduction of price to Fellows of the Eoyal Society. 
Published by Kegan Paul, Trench, Trubner, and Co. 
A few copies at the reduced price of £1 Is. (published at £3). 
Eoyal 4to, pp. iv.—936, cloth. With 51 Lithographic and Photographic Plates, 
A MONOGRAPH OF THE HORNY SPONGES. 
By E. von LENDENFELD. 
A further reduction of price to Fellows of the Eoyal 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 EEUPTION OF KEAKATOA AND SUBSEQUENT PHENOMENA. 
Eeport of the Krakatoa Committee of the Eoyal Society. 
Edited by G. J. SYMONS, F.E.S. 
Price 30s. To Fellows of the Eoyal Society and Eoyal Meteorological Society, 20s. 
Published by Kegan Paul, Trench, Trubner, and Co. 
Eoyal 4to, pp. xiv.—326, cloth. Price 21s. 
OBSEBYATIONS OF THE INTEENATIONAL POLAR EXPEDITIONS, 
1882-1883. 
F 0 E T E A E. 
With 32 Lithographic Folding Plates. 
A reduction of price to Fellows of the Eoyal Societj'. 
Continental Agents for the publications of the Eoyal Society, Messrs. Friedlander and Son, Berlin. 
