LIST OF BOOKS OFFERED FOR SALE 



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RASTALL (R. H.). Agricultural Geology. Cambridge, 1916. pp. 340. 8vo. 



Illustrated. Cloth. 10s. 6d. 

 STEUART (D. S. SPENS-). The Metalliferous Deposits of Cornwall and 



Devon. London, 1916. pp. 51. 8vo. 3s. 6d. 

 THOMSON (A. B.). Oil-field Development and Petroleum Mining. London, 



1916. 8vo. Illustrated. Cloth. £1 5s. 

 WAGNER (P. H.). Coal and Coke. New York, 1916. pp. 431, 8vo, 



with 137 Illustrations. Cloth. ] 7s. 

 WEINSCHENK (E.). Fundamental Principles of Petrology, translated from 

 - the third German edition by A. Johannsen. New York, 1916. pp. 214. 



8vo. Illustrated. Cloth. 10s. Qd. 

 WEST (G. S.). Algae. Vol. I : Myxophyceee, Peridinieee, Bacillarieas, 



Chlorophyce83, together with a brief summary of the occurrence and 



distribution of Freshwater Algee. Cambridge, 1916. pp. 486. Royal 8vo. 



With 271 illustrations. Cloth. £1 5s. 

 WHELDALE (M.). Anthocyanin Pigments of Plants. Cambridge, 1916. 



pp. x + 318. 8vo. Cloth. 15s. 

 WILLISTON (S. W.). Water Reptiles of the Past and Present. Chicago, 



1914. pp. 251. 8vo. Illustrated. Cloth. 12s. 



JUST ISSUED. 



Catalogue of Secondhand BOTANICAL and NATURAL 

 HISTORY BOOKS. Sent free to any address on application. 



PALiEONTOGRAPHICAL SOCIETY, 1915. 



VOLUME LXIX. £1 5s. 



CONTAINING : 



1. The Wealden and Purbeck Fishes. Parti. By Dr. A. S. WoODWAED. Ten plates. 



2. The Palaeozoic Asterozoa. Part II. By Mr. W. K. Spencer. Four plates. 



RAY SOCIETY. 



WORSDELL (W. C). The Principles of Plant Teratology. 



2 vols. 8vo. With 50 plates. Cloth. £2 10s. net. 



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