G.P. Serviss. Illustrated. 6s. net

Telling all that may be seen in the skies without the aid of the telescope

THE FRIENDLY STARS

M.E. Martin. Illustrated. 5s. net

A handy volume, enabling the reader to identify the principal stars and constellations

SIDELIGHTS ON ASTRONOMY

Prof. Simon Newcomb. Illustrated. 7s. 6d. net

Discusses such topics as "Are the Planets Inhabited?" etc. etc.

THE CHEMISTRY OF COMMERCE

Prof. R.K. Duncan, author of "The New Knowledge." Illustrated. 7s. 6d. net; post-free, 7s. 11d.

An account of the scientific processes involved in modern industry, with valuable suggestions for their extension

NEW CONCEPTIONS IN SCIENCE

Carl Snyder. Illustrated. 7s. 6d. net

Dealing with the new worlds revealed by the microscope, telescope, etc., and the latest scientific theories based thereon

NINETEENTH CENTURY SCIENCE