THE
EVOLUTION THEORY

VOLUME II

THE
EVOLUTION THEORY

BY

Dr. AUGUST WEISMANN

PROFESSOR OF ZOOLOGY IN THE UNIVERSITY OF FREIBURG IN BREISGAU

TRANSLATED WITH THE AUTHOR'S CO-OPERATION

BY

J. ARTHUR THOMSON

REGIUS PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF ABERDEEN

AND

MARGARET R. THOMSON

ILLUSTRATED

IN TWO VOLUMES

VOL. II

LONDON
EDWARD ARNOLD

41 & 43 MADDOX STREET, BOND STREET, W.

1904

All rights reserved


CONTENTS

LECTUREPAGE
XX.Regeneration1
XXI.Regeneration (continued)23
XXII.Share of the Parents in the Building up of the Offspring37
XXIII.Examination of the Hypothesis of the Transmissibility
of Functional Modifications
62
XXIV.Objections to the Thesis that Functional Modifications
are not transmitted
80
XXV.Germinal Selection113
XXVI.Germinal Selection (continued)136
XXVII.The Biogenetic Law159
XXVIII.The General Significance of Amphimixis192
XXIX.The General Significance of Amphimixis (continued)210
XXX.In-breeding, Parthenogenesis, Asexual Reproduction,
and their Consequences
238
XXXI.The Influences of Environment265
...

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