CONTENTS ix. 



crystals Symbiogenetic "alchemy" of transforming crystalloid into 

 (colloid) vegetable particles Symbiogenesis comprising chemical factors 

 Danger of indiscriminate use of colloids In-feeding and pathogenetic 

 transformation Significance of vegetable Alkaloid potency on 

 animal physiology Bio-chemical and bio-economic correlations Patho- 

 logia physiologiam illustrat The law of conflict the alternative of 

 that of .symbiosis Cyanogenetic plants Toxicological effect of many 

 plant-alkaloids upon the respiration of animals Respiration and 

 circulation as affecting brain development and evolution " Supplies " 

 in respiration and circulation ultimately connected with nutrition 

 and depending on symbiosis Homoeopathy an attempt to normalise 

 extreme plant potencies Internal secretions of animals compared 

 to active principles of vegetable drugs Inferences therefrom as 

 regards symbiogenetic evolution Milk like a vegetable (" Love-food "; 

 substance Contribution of the plant-world to the "digestive trans- 

 formation " of animals Katabolic emanations and unstable equi- 

 libria Nerve-force v. physical and chemical forces The nervous 

 system and systematic work Sensible motion and symbiosis The 

 ' ' persistence of force ' ' in biology Definitions of life Co-operation 

 and co-ordination " The continuous adjustment of internal and external 

 relations" an inadequate formula for biological purposes Life and its 

 correspondences The " higher " and the " lower " Bio-economic criteria 

 Rough and ready criteria Spencer not disinclined towards bio-economic 

 criteria of status Integration and Nutrition "Fit" food and the 

 biological factor Bio-dynamic aspects of "Function"' Physiological 

 division of labour and Bio- Economics Danger of over-specialisation 

 Ability to rely upon symbiotic correspondences saves trouble of 

 maintaining many primitive functions Waste and repair Significance 

 of selective assimilation on the part of organs Individuality determining 

 regeneration and behaviour of "physiological units" (polarity) Com- 

 parison of Spencer's physiological units" with Mr. Davidson's " plan- 

 tagens " The question of individuality Adaptation Self-adaptation 

 Adaptation beginning with habits Mimicry and convergence among 

 plants Self-pauperisation among plants Distinction between progres- 

 sive degeneration and retrogressive degeneration Variation Vari- 

 able transmission Transmission of Functional Variation The symbio- 

 genetic the main theme of Variations The operation of the forces of 

 organic solidarity (symbiogenesis) compared with that of gravitation 

 Distribution of organisms during geological periods and the questions 

 of survival, extinction, fitness and creative skill Symbiogenetic inter- 

 pretation of evolution Something similar desiderated but only vaguely 

 proclaimed by Spencer Evolution an uplifting and improving process 

 with a strong bio-moral sanction behind it " Happiness " resulting 



