By C. Stephenson, of The Technical College, Bradford, and F. Suddards, of The Yorkshire College, Leeds. With 65 full-page plates. Demy 8vo. Second Edition. 7s. 6d.

'The book is very ably done, displaying an intimate knowledge of principles, good taste, and the faculty of clear exposition.'—Yorkshire Post.

GENERAL ELEMENTARY SCIENCE.

By J. T. Dunn, D.Sc., and V. A. Mundella. With many Illustrations. Crown 8vo. 3s. 6d.

[Methuen's Science Primers.

THE WORLD OF SCIENCE. Including Chemistry, Heat, Light, Sound, Magnetism, Electricity, Botany, Zoology, Physiology, Astronomy, and Geology.

By R. Elliott Steel, M.A., F.C.S. 147 Illustrations. Second Edition. Cr. 8vo. 2s. 6d.

ELEMENTARY LIGHT.

By R. E. Steel. With numerous Illustrations. Crown 8vo, 4s. 6d.

VOLUMETRIC ANALYSIS.

By J. B. Russell, B.Sc., Science Master at Burnley Grammar School. Cr. 8vo, 1s.

'A collection of useful, well-arranged notes.'—School Guardian.

Textbooks of Technology