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Heinemann's Scientific Handbooks

THE BIOLOGICAL PROBLEM OF TO-DAY

HERTWIG




Heinemann's Scientific Handbooks

THE BIOLOGICAL PROBLEM OF TO-DAY

_PREFORMATION OR EPIGENESIS? THE BASIS OF A THEORY OF ORGANIC DEVELOPMENT_

BY

PROFESSOR DR. OSCAR HERTWIG DIRECTOR OF THE SECOND ANATOMICAL INSTITUTE OF
THE UNIVERSITY OF BERLIN

Authorized Translation

BY

P. CHALMERS MITCHELL, M.A.

_WITH AN INTRODUCTION BY THE TRANSLATOR AND A GLOSSARY OF THE TECHNICAL
TERMS_

LONDON
WILLIAM HEINEMANN
1896