PENNINGTON (Rooke).—Notes on the Barrows and Bone Caves of Derbyshire. 8vo. 6s.

RENDU-WILLS.—The Theory of the Glaciers of Savoy. By M. Le Chanoine Rendu. Trans. by A. Wills, Q.C. 8vo. 7s. 6d.

ROSENBUSCH-IDDINGS.--Microscopical Physiography of the Rock-Making Minerals. By Prof. H. Rosenbusch. Transl. by J. P. Iddings. Illustr. 8vo. 24s.

WILLIAMS (G. H.).—Elements of Crystallography. Cr. 8vo. 6s.

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