THE GEOMETRICAL METHOD. 485 



illustrated the two erroneous methods, we shall pass without 

 further preliminary to the true method ; that which proceeds 

 (conformably to the practice of the more complex physical 

 sciences) deductively indeed, but by deduction from many, not 

 from one or a very few, original premises ; considering each 

 effect as (what it really is) an aggregate result of many causes, 

 operating sometimes through the same, sometimes through 

 different mental agencies, or laws of human nature. 



