Sold by Harrison and Sons, Sr. Martin’s Lane. 
Demy 8vo, pp. 427. Price 12s. ^d. 
THE EECORD 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, &c.; Statutes and Regulations; Business of the 
Society daring 1902, including Anniversary Meeting with President’s Address, Council’s Report, 
and Treasurer’s Accounts ; Arrangements for 1903; Obituary Notices of Fellows deceased. 
PHILOSOPHICAL TRANSACTIONS. 
Series A. Containing Papers of a Mathematical or PhYsical Character. 
Yol. 199 (1902), Price £1 6s. 
VoL. 200 (1903), Price £2 3s., with 39 Plates. 
Series B. Containing Papers of a Biological Character. 
Yol. 194 (1901), Price £3, with 49 Plates. 
Yol. 195 (1902), Price £1 7s. 6cl., with 16 Plates. 
Pdblished by Clay and Sons, Aye Maria Lane. 
CATALOGUE OF SCIENTIFIC PAPERS. 
COMPILED BY THE ROYAL 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. Yols. 7, 8 (1864-73), cloth, £1 11s. Gd. net; half-morocco, £2 5s. net. Single 
vols., cloth, 20s.; half-morocco, 28s. net. Yols. 9, 10 (1874—83), cloth, £1 5s. net; half-morocco, 
£1 12s. net. Yol. 11 (1874-83), cloth, £1 5s. net; half-morocco, £1 12s. net. Yol. 12 (Supple¬ 
mentary, 1800-1883), cloth, £1 5s. net; half-morocco, £1 12s. net. 
A reduction of price to Fellows of the Royal Society. 
Pdblished by Kegan Paul, Trench, Trdbnbr and Co. 
A few copies at the reduced price of £1. Is. (published at £3). 
Royal 4to, pp. iv.—936, cloth. With 51 Lithographic and Photographic Plates. 
A MONOGRAPH OF THE HORNY SPONGES. 
By R. yon LENDENFELD. 
A further reduction of price to Fellows of the Royal Society. 
Published by Kegan Padl, Trench, Trubnek and Co. 
In 1 vol., 4to. Pp. 500. With 6 Chromolithographs of the remarkable Sunsets of 1883 and 
40 Iitaps and Diagrams. 
THE ERUPTION OF KRAKATOA AND SUBSEQUENT PHENO]\[ENA. 
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. 
Pdblished by Kegan Padl, Trench, Trdbner, 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. 
