10 VARIETY IN LIFE. 



Advantages of variety in nature enables existence 

 of more life ; saves waste ; saves destructive competi- 

 tion. "Purposes of nature." Analogy to human de- 

 vices. Teleology. 



Species made up of individuals. They change with 

 space and with time. With space, because with space 

 comes barriers ; with time, because it brings events 

 producing divergence. Neither time nor space flow 

 on evenly in the world of life. Variations grow 

 greater with lapse of time and space, for these bring 

 other events and form other barriers. 



Is there a law of variation ? If variation exists it 

 has its meaning. It is produced by fixed laws ; it is 

 governed by fixed laws. What is the origin of spe- 

 cies ? 



While species change, their types persist. Essential 

 unity in variety. 



