Sold by Harrison and Sons, St. Martin’s Lane. 
Demy 8vo, pp. 427. Price, 12.«. QiJ. 
THE RECORD OF THE ROYAL SOCIETY. 
Second Edition. 1901. 
Containing an Account of the Foundation, History, Ac., of the Society, with a Chronological List and 
Alphabetical Index of the Fellows from the Foundation. 
Demy 8vo, pp. 265. Price 5 a 
THE YEAR-BOOK OF THE ROYAL SOCIETY, 1903. 
Principal Contents:—List of Fellows, Committees, Ac.; Statutes and Eegulations j Business of the 
Society during 1902, including Anniversary Meeting with President’s Address, Council’s Eeport, and 
Treasurer’s Accounts; Arrangements for 1903; Obituary Xotices 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 3.a, with 39 Plates. 
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VoL. 194 (1901), Price £3, with 49 Plates. 
VoL. 195 (1902), Price £1 7s. 6cl, Avith 16 Plates. 
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CATALOGUE OF SCIENTIFIC PAPERS, 
COMPILED BY THE EOYAL SOCIETY. 
The volumes on sale as follows :—Vols. 1-6 (1800-63), cloth (vol. 1 in half-morocco), £4 net; half¬ 
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£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 12s. net. 
A reduction of price to Fellows of the Eoyal Society. 
Published by Kegan Paul, Trench, Trubner, and Co. 
A feAv copies at the reduced price of £1 Ls. (published at £3). 
Eoyal 4to, pp. iv.—936, cloth. With 51 Lithographic and Photographic Plates, 
A MONOGRAPH OF THE HORNY SPONGES. 
By E. von LENDEXFELD. 
A further reduction of price to FelloAvs 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 ERUPTION OF KRAKATOA AND SUBSEQUENT PHENOMENA. 
Eeport of the Krakatoa Committee of the Eoyal Society. 
Edited by G. J. SY'MONS, F.E.S. 
Price 30s. To FelloAvs of the Eoyal Society and Eoyal Meteorological Society, 20s. 
Published by Kegan Paul, Trench, Trubner, and Co. 
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OBSERVATIONS OF THE INTERNATIONAL POLAR EXPEDITIONS, 
1882-1883. 
FOET EAE. 
With 32 Lithographic Folding Plates. 
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