THE INVISIBLE POWERS OF NATURE.

HEAT, LIGHT, SOUND, GRAVITATION, SOLIDS, FLUIDS, ELECTRICITY, MAGNETISM, &c.

By E.M. CAILLARD.

Post 8vo. 6s.

"The book is one which will bear good fruit in the hands of the young, and we congratulate the authoress on having produced a very readable little volume."--Journal of Education.

"We admire the lucidity and easy power with which the most recondite or complicated matters are treated, and the manner in which common matters are made illustrative."--Nonconformist.

"We have rarely met with a work of the kind in which so much information is so clearly and so accurately set forth."--Gardeners' Chronicle.


The CORRESPONDENCE of the Late JOHN LOTHROP MOTLEY. DANIEL O'CONNELL'S POLITICAL & PRIVATE CORRESPONDENCE.
1792-1847.
SOMETIME UNITED STATES MINISTER IN ENGLAND.EDITED WITH NOTICES OF HIS LIFE AND TIMES.
By W.M.J. FITZPATRICK, F.S.A.
Second Edition. With Portrait. 2 Vols. 8vo. 30s.With Portrait. 2 Vols. 8vo, 36s.