LECTURES AND ESSAYS. 8vo. Sewed. _6d._

ESSAYS: ETHICAL AND POLITICAL. 8vo, Sewed. _6d._

LIFE OF HUME. Crown 8vo. Library Edition. _2s._ net. Popular Edition,
_1s. 6d._ Sewed. _1s._ F'cap 8vo. Pocket Edition. _1s._ net. _English
Men of Letters._


By Prof. T.H. HUXLEY, assisted by Prof. H.N. MARTIN.

A COURSE OF ELEMENTARY INSTRUCTION IN PRACTICAL BIOLOGY. Revised and
extended by G.B. HOWES and D.H. SCOTT. Crown 8vo, _10s. 6d._

MACMILLAN AND CO., LTD., LONDON.




LECTURES AND ESSAYS


BY

THOMAS HENRY HUXLEY