. 



CONTENTS 



CHAPTER PAGE 



I. THE PROBLEM i 



The Characteristics of the Organic Individual; Unity and 

 Order in the Life of the Individual; Reproduction and 

 Individuation; Metabolism and Protoplasm; Terminology. 



II. THEORIES OF ORGANIC INDIVIDUALITY 21 



Theoretical Review and Critique; A Dynamic Conception of 

 the Organic Individual. 



III. METABOLIC GRADIENTS IN ORGANISMS 50 



Susceptibility Gradients in Animals and Plants; Further 

 Physiological Evidence for the Existence of Metabolic Gra- 

 dients; Embryological Evidence for the Existence of Axial 

 Metabolic Gradients; Developmental Gradients in Agamic 

 and Experimental Reproduction; Conclusion. 



IV. PHYSIOLOGICAL DOMINANCE IN THE PROCESS OF INDI- 

 VIDUATION 88 



The Experimental Material; The Independence of the Apical 

 Region; Dominance and Subordination in Experimental 

 Reproduction; The Reconstitution of an Individual from an 

 Isolated Piece; Some Modifying and Limiting Factors in 

 Animal Reconstitution; Conclusion. 



V. THE RANGE OF DOMINANCE, PHYSIOLOGICAL ISOLATION, 



AND EXPERIMENTAL REPRODUCTION 127 



Experimental Control of Spatial Relations of Parts and of the 

 Range of Dominance; Experimental Obliteration and 

 Determination of Axial Gradients and Dominance; The 

 Extension of Dominance during Development; Experimental 

 Physiological Isolation and Reproduction in Plants; The 

 Localization of Experimental Reproduction in Relation to 

 Different Axes; Conclusion. 



VI. DISCUSSION, CONCLUSIONS, AND SUGGESTIONS . . .170 

 The Nature of Dominance; The Nature of Inhibition; 

 Origin of Metabolic Gradients and of Dominance; Morpho- 

 logical Differentiation in Relation to Metabolic Rate; The 

 Fundamental Reaction System; Agamic Reproduction in 

 Relation to Physiological Isolation; Gametic Reproduction; 

 Heredity, Evolution, and Other Problems from the Dynamic 

 Standpoint. 



