S. S.

A. E. S.

Oxford, February, 1889.

CONTENTS.

Translator. A. E. Shipley

I.The Duration of Life, 1881[1]
II.On Heredity, 1883[67]
III.Life and Death, 1883[107]

Translator. Selmar Schönland

IV.The Continuity of the Germ-plasm as the Foundation of a Theory of Heredity, 1885[161]
V.The Significance of Sexual Reproduction in the Theory of Natural Selection, 1886[251]
VI.On the Number of Polar Bodies and their Significance in Heredity, 1887[333]
VII.On the Supposed Botanical Proofs of the Transmission of Acquired Characters, 1888.[385]
VIII.The Supposed Transmission of Mutilations, 1888[419]