LETTERS ON NATURAL MAGIC. A new Edition, with numerous Illustrations, and Chapters on Additional Phenomena of Natural Magic, by J. A. Smith. Post 8vo, cloth extra, 4s. 6d.

By MICHAEL FARADAY.

THE CHEMICAL HISTORY OF A CANDLE. With Illustrations. Edited by William Crookes, F.C.S. Post 8vo, cloth extra, 4s. 6d.

ON THE VARIOUS FORCES OF NATURE, and their Relations to each other. With numerous Illustrations. Edited by William Crookes, F.C.S. Post 8vo, cloth extra, 4s. 6d.

LONDON: CHATTO & WINDUS, PICCADILLY.


ON THE
Various Forces of Nature
AND
THEIR RELATIONS TO EACH OTHER:

A COURSE OF LECTURES DELIVERED BEFORE A JUVENILE
AUDIENCE AT THE ROYAL INSTITUTION

BY MICHAEL FARADAY, D.C.L., F.R.S.