CONTENTS vii. 



races are very variable Good and bad ' ' variability " as a Mendelian 

 "character" Exaggeration of bad "variability" at expense of 

 symbiotics A plant taken from its natural conditions likely to "vary" 

 because removed from the bond of normal bio-economic co-operation 

 The new factor of cultivation itself constantly gives rise to the advent 

 of manifold new factors and to many re-arrangements according to 

 values Evidence that Mendelian phenomena are connected with 

 symbiogenesis The "instability of the homogeneous" and the tendency 

 to vary connected with needs of bio-economic specialisation Compati- 

 bility for a good blend of "characters" Retrograde compatibilities are 

 sometimes responsible for blends between individuals of different species 

 or genera Elimination of injurious variations by Mendelian segrega- 

 tion in accordance with values Mendelian segregation a third line of 

 defence of racial purity How come "characters" to be reciprocal? 

 Distribution of chromosomes in the cell a parallel to Mendelian distribu- 

 tion of "characters" Association of chromosomes with cell-metabolism 

 Sex as a Mendelian character Alternative inheritance disappears 

 when "characters" have become fixed New values the alternatives of old 

 Antagonism between good and bad old and new factors the rule in 

 evolution Significance of Mendelian "factors" Question of extrinsic 

 additions Significance of symmetry and of proportion in morphogenesis 

 The cause of sterility is the same as that of asymmetry Retrograde 

 compatibility as an alternative of sterility Self -sterility versus Self- 

 fertility Fluctuations of sterility are in accordance with specialisation 

 Meristic phenomena determined by symbiotic conditions Foundations 

 of " Genetic Physiology." 



CHAPTER IV. 



BIONOMICS. 



Herbert Spencer's (dynamic) view of organic matter as a resultant 

 of the properties of its constituents Need of Bio-Economics to supple- 

 ment this view The term character as an indication of adaptation 

 for work Allotropic modifications and Crystallinity or Colloidity as 

 examples Connection of surface-tension with colloidity and with work- 

 Evolution of colloidal " vitality " by symbiogenetic processes Compari- 

 son with plantagen evolution Symbiotic potential Reciprocal relations 

 in the evolution of the elements leading up to colloidal efflorescence 

 Artificial transformation of crystalloids into colloids by Peptisation 

 ("infection") Ferment action (Catalysis) Bio-chemical implies bio- 

 economic stimulation Instability and inertness of "nitrogenous 

 principles" Organic polarity viewed as bio-dynamic character 

 Polarity and Symbiosis Mechanism of growth determined by 

 Bio-Dynamics Liability of great bulk to mechanical weakness 

 Dangers of excessive protein-consumption Colloidity considered bio- 



