LXXVIII. ICE-WORK PRESENT and PAST. By Rev. T. G. Bonney, D.Sc., LL.D., F.R.S., &c., Professor of Geology at University College, London; Fellow of St. John's College, Cambridge.

LXXIX. A CONTRIBUTION to our KNOWLEDGE of SEEDLINGS. By Rt. Hon. Sir John Lubbock, Bart., M.P., F.R.S.

LXXX. The ART of MUSIC. By Sir C. Hubert H. Parry, Mus. Doc.

LXXXI. The POLAR AURORA. By Alfred Angot. Illustrated.

LXXXII. WHAT is ELECTRICITY? By J. Trowbridge. Illustrated.

LXXXIII. MEMORY. By F. W. Edridge-Green, M.D. With Frontispiece.

LXXXIV. The ELEMENTS of HYPNOTISM. By B. Harry Vincent. With Diagrams. Second Edition.

LXXXV. SEISMOLOGY. By John Milne, F.R.S., F.G.S., &c., Author of 'Earthquakes.' With 63 Figures.

LXXXVI. On BUDS and STIPULES. By the Right Hon. Sir John Lubbock, Bart, M.P., F.R.S., D.C.L., LL.D. With 4 Coloured Plates and 340 Figures in the Text.

LXXXVII. EVOLUTION by ATROPHY, in Biology and Sociology. By Jean Demoor, Jean Massart, and Emile Vandervelde. Translated by Mrs. Chalmers Mitchell. With 84 Figures.