The Biological Problem of To-day Preformation Or Epigenesis? The Basis of a Theory of Organic Development
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Heinemann's Scientific Handbooks
THE BIOLOGICAL PROBLEM OF TO-DAY
HERTWIG
Heinemann's Scientific Handbooks
Heinemann's Scientific Handbooks
THE BIOLOGICAL PROBLEM OF TO-DAY
PREFORMATION OR EPIGENESIS? THE BASIS OF A THEORY OF ORGANIC DEVELOPMENT
BY
BY
PROFESSOR DR. OSCAR HERTWIG
DIRECTOR OF THE SECOND ANATOMICAL INSTITUTE OF THE UNIVERSITY OF BERLIN
Authorized Translation
BY
BY
P. CHALMERS MITCHELL, M.A.
WITH AN INTRODUCTION BY THE TRANSLATOR AND A GLOSSARY OF THE TECHNICAL TERMS
WITH AN INTRODUCTION BY THE TRANSLATOR AND A GLOSSARY OF THE TECHNICAL TERMS
DIRECTOR OF THE SECOND ANATOMICAL INSTITUTE OF THE UNIVERSITY OF BERLIN
Authorized Translation
BY
BY
P. CHALMERS MITCHELL, M.A.
WITH AN INTRODUCTION BY THE TRANSLATOR AND A GLOSSARY OF THE TECHNICAL TERMS
WITH AN INTRODUCTION BY THE TRANSLATOR AND A GLOSSARY OF THE TECHNICAL TERMS
PREFACE
TRANSLATOR'S INTRODUCTION
CONTENTS
THE BIOLOGICAL PROBLEM OF TO-DAY
INTRODUCTION.
FOOTNOTES:
FOOTNOTES:
PART I.
WEISMANN'S THEORY OF THE GERMPLASM AND DOCTRINE OF DETERMINANTS.
Criticism of the Germplasm Theory.[8]
I. Objections to the Hypothesis of Differentiating Division.
FIRST GROUP OF FACTS.—UNICELLULAR ORGANISMS.
SECOND GROUP OF FACTS.—THE LOWER MULTI-CELLULAR ORGANISMS.
THIRD GROUP OF FACTS.—THE PHENOMENA OF REPRODUCTION AND REGENERATION IN PLANTS AND ANIMALS.
FOURTH GROUP OF FACTS.—THE PHENOMENA OF HETEROMORPHOSIS.[12]
FIFTH GROUP OF FACTS.—PHENOMENA OF VEGETATIVE AFFINITY.[16]
SUMMARY OF THE CONCLUSIONS IN THE FIRST SECTION.
II. ARGUMENTS AGAINST THE DOCTRINE OF DETERMINANTS.
FOOTNOTES:
WEISMANN'S THEORY OF THE GERMPLASM AND DOCTRINE OF DETERMINANTS.
Criticism of the Germplasm Theory.[8]
I. Objections to the Hypothesis of Differentiating Division.
FIRST GROUP OF FACTS.—UNICELLULAR ORGANISMS.
SECOND GROUP OF FACTS.—THE LOWER MULTI-CELLULAR ORGANISMS.
THIRD GROUP OF FACTS.—THE PHENOMENA OF REPRODUCTION AND REGENERATION IN PLANTS AND ANIMALS.
FOURTH GROUP OF FACTS.—THE PHENOMENA OF HETEROMORPHOSIS.[12]
FIFTH GROUP OF FACTS.—PHENOMENA OF VEGETATIVE AFFINITY.[16]
SUMMARY OF THE CONCLUSIONS IN THE FIRST SECTION.
II. ARGUMENTS AGAINST THE DOCTRINE OF DETERMINANTS.
FOOTNOTES:
PART II.
THOUGHTS TOWARDS A THEORY OF THE DEVELOPMENT OF ORGANISMS.[17]
FOOTNOTES:
THOUGHTS TOWARDS A THEORY OF THE DEVELOPMENT OF ORGANISMS.[17]
FOOTNOTES:
INDEX AND GLOSSARY
THE END.
THE END.
Heinemann's Scientific Handbooks.
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