Published by Clay and Sons, Ava Maria Lane. 
CATALOGUE OF SCIENTIFIC PAPERS, 
COMPILED BY THE EOYAL SOCIETY. 
Vol. II (1874-83). Pet-Zyb. Price 25s., clotb. 32s., half-morocco. 
The back volumes on sale as follows :—Vols. 1—6 (1800—63), cloth (vol. I in half morocco) £4 net; half¬ 
morocco, £5 5s. net. Vols. 7, 8 (1864-73), cloth, £1 lls. 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. 
A reduction of price to Fellows of the Royal Society. 
Published by Kegan Paul, Trench, Trubner, and Co. 
Royal 4to, pp. xiv.—326, cloth. Price 21s. 
OBSEIIYATIONS OF THE INTERNATIONAL POLAR EXPEDITIONS. 
1882-1883. 
PORT RAE. 
With 32 Lithographic Folding Plates. 
A reduction of price to Fellows of the Royal Society. 
