Biologic Evolution. 223 



moves by steps of generations in endless circles 

 that what has been is, and what is shall be, and there 

 is no progress, the gift of science to man'would have 

 been worthless. 



The revelation of science is this : Every generation 

 in life is a step in progress to a higher and fuller life ; 

 science has discovered hope. 



Darwin demonstrated what others vaguely be- 

 lieved or dimly saw the course and methods of 

 biologic evolution. Darwin gave hope to philosophy. 



The universe of phenomena may be classed in 

 three great categories : 

 I. Physical. 

 II. Biologic. 

 III. Anthropologic. 



Physical phenomena may be thrown into three 

 categories : I. Molar or mechanical physics ; 2. 

 Stellar or astronomical physics ; 3. Molecular physics. 



Biologic phenomena may be classed as : i. Vege- 

 tal ; 2. Animal. 



Anthropologic phenomena may be classed as : I. 

 Sociologic ; 2. Philologic ; 3. Philosophic ; 4, Psy- 

 chologic. 



To the discovery of the methods and course of 

 physical evolution i.e. the order of succession in 

 physical phenomena, many great men have con- 

 tributed. Among these, Newton stands pre-eminent. 



The discovery of biologic evolution, i.e., the suc- 

 cession of phenomena in vegetal and animal life, is 

 in like manner due to the researches of many men, 

 but among these Darwin stands pre-eminent. By 

 his discoveries the discoveries of all other biologists 



