A POPULAR EXPOSITION OF THE PRINCIPAL POINTS OF HUMAN ONTOGENY AND PHYLOGENY.
By Prof. ERNST HAECKEL, Author of “The History of Creation,” etc.
With Numerous Illustrations.
Crown 8vo, cloth.
FREEDOM IN SCIENCE AND TEACHING.
A REPLY TO PROFESSOR VIRCHOW ON THE FREEDOM OF SCIENCE IN THE MODERN STATE.
By Professor ERNST HAECKEL.
Authorised Translation, with Introduction by Professor Huxley, F.R.S.