LIFE; BODY AND MIND 193 



lieved in baptism. "Believe in baptism !" he said, 

 "I have seen it done." 



It is recognition of the peculiar phenomena 

 of life which has led to the classification of biol- 

 ogy as an independent science. We may doubt 

 whether there is an impassable gulf between 

 vital processes and those of physics and chemis- 

 try; but need I point out again how indispen- 

 sable to the growth of science are its classifica- 

 tions, although its several categories rarely, if 

 ever, maintain their integrity after prolonged 

 analysis. By some such means as I sketched in 

 the last chapter it may be possible to pass by 

 insensible gradations from the typical system 

 of the biologist to the typical system of the 

 physical chemist. We have a longing for unity, 

 and since nowadays we have excluded the super- 

 natural by making the word nature comprehend 

 every kind of occurrence, so we might define 

 science as the search for relationships between 

 all sorts of existing phenomena. Then there 

 would be only one science, but we should not 

 attempt to identify it with any one of its pres- 

 ent subdivisions. 



It was once supposed that sun, clouds, winds, 

 mountains and brooks were each endowed with 

 psychic purpose, and that every occurrence in 



