CONTENTS xj 



PAGE 



Instances of " Harmonious-equipotential Systems " . 126 

 The Problem of the Factor E . . . .132 



No Explanation offered by "Means" or "Formative 



Stimuli" . . . . . .132 



No Explanation offered by a Chemical Theory of 



Morphogenesis . . . . .134 



No Machine Possible Inside the Harmonious Systems 138 

 The Autonomy of Morphogenesis proved . . 142 



"Entelechy" 143 



Some General Remarks on Vitalism . . . 145 



The Logic of our First Proof of A^itali.sm . . 146 



4. ON CERTAIN OTHER FEATURES OF MORPHOGENESIS ADVO- 

 CATING ITS AUTONOMY . . . . .150 



Harmonious - equipotential Systems formed by Wander- 

 ing Cells. . . . . . .151 



On Certain Combined Types of Morphogenetic Systems . 153 

 The " Morphaesthesia " of Noll . . . .157 



Restitutions of the Second Order .... 158 



On the "Equifinality " of Restitutions . . .159 



Remarks on " Retro-Differentiation " . . . 163 



a ADAPTATION- 

 INTRODUCTORY REMARKS ON REGULATIONS IN GENERAL . 165 



1. MORPHOLOGICAL ADAPTATION ..... 168 



The Limits of the Concept of Adaptation . . . 168 



Adaptations to Functional Changes from Without . . 172 



True Functional Adaptation .... 176 



Theoretical Conclusions ..... 179 



2. PHYSIOLOGICAL ADAPTATION ..... 184 



Specific Adaptedness not " Adaptation " . . . 186 



Primary and Secondary Adaptations in Physiology . 188 



On Certain Pre-requisites of Adaptations in General . 189 



On Certain Groups of Primary Physiological Adaptations . 190 



General Remarks on Irritability . . .190 



The Regulation of Heat Production . . .193 



Primary Regulations in the Transport of Materials and 



Certain Phenomena of Osmotic Pressure . .194 



Chromatic Regulations in Algae . . .197 



Metabolic Regulations . . . . .198 



Immunity the only Type of a Secondary Physiological 



Adaptation .... . 204 



No General Positive Result from this Chapter . . 209 



A few Remarks on the Limits of Regulability . . 212 



