252 THE FITNESS OF THE ENVIRONMENT 



d. Number of Reactions. 



e. Variety of Reactions. 



/. Complexity of Reactions. 



g. The Evenness and Lack of Energy 

 Change of the Process of Hydro- 

 lytic Cleavage. 



h. The Chemical Relationship of Car- 

 bonic Acid and Water to the Sugars. 



i. Instability of the Sugars. 



j. Variety and Reactions of the Sugars. 



k. Heats of Reaction in Organic Chemis- 

 try. 



I. The Number and Variety of Com- 

 pounds and Reactions of Oxygen 

 with Other Elements. 



m. The Number and Variety of Com- 

 pounds and Reactions of Hydro- 

 gen with Other Elements. 



All the properties or other phenomena 

 noted in the above table (except II /, and II h) 

 are in character or in magnitude either unique 

 or nearly so, and are in their effect favorable 

 to the organism as defined in the fundamental 

 postulates. Indeed, they constitute or bring / 

 about an extraordinary set of conditions 

 favorable to life, — ubiquity, abundance, va- 

 riety, stability, mobility, constancy of composi- 

 tion, and invariance of physico-chemical con- 



