Water, Air, and Disinfectants. By W. Noel Hartley, Esq., King’s College.

MANUALS OF ELEMENTARY SCIENCE.

Fcap. 8vo, 128pp., with Illustrations, limp cloth, 1s. each.

Physiology. By F. le Gros Clarke, F.R.S., St. Thomas’s Hospital.

Geology. By the Rev. T. G. Bonney, M.A., F.G.S., Fellow and late Tutor of St. John’s College, Cambridge.

Chemistry. By Albert J. Bernays.

Astronomy. By W. H. M. Christie, M.A., the Royal Observatory, Greenwich.

Botany. By Robert Bentley, Professor of Botany in King’s College, London.

Zoology. By Alfred Newton, M.A., F.R.S., Professor of Zoology and Comparative Anatomy in the University of Cambridge.

Matter and Motion. By the late J. Clerk Maxwell, M.A., Trinity College, Cambridge.