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]

Abstracts of Professor Weismann’s Essays on Heredity and Kindred

Problems, already Published in this Country.

I.A short abstract in ‘Nature,’ Vol. XXXVII, pp. 541-542, by P. C. Mitchell.
II.A short abstract in ‘Nature,’ Vol. XXXVIII, pp. 156-157, by P. C. Mitchell.
III.A short article on the subject of this Essay in ‘The Nineteenth Century’ for May, 1885, by A. E. Shipley.
IV.Abstract in ‘Nature,’ Vol. XXXIII, pp. 154-157, by Professor Moseley.
V.Abstract in ‘Nature,’ Vol. XXXIV, pp. 629-632, by Professor Moseley.
VI.Abstract in ‘Nature,’ Vol. XXXVI, pp. 607-609, by Professor Weismann.
VII,VIII. The Essays being of so recent a date no abstract has yet appeared in this country.

A criticism of Professor Weismann’s theories will be found in ‘The Physiology of Plants,’ by Professor Vines, Lecture XXIII, pp. 660 et seqq.

I.

THE DURATION OF LIFE.

1881.