594 THE PHILOSOPHY OF FARMING. 
stupendous powers and principles of nature. 
What we have seen yet is but a prelude to what 
man shall see. Physical laws are mighty and 
manifold—still more so are vital ones; because 
the former are but the servants of the latter. 
And when these laws become known—when their 
operations can be seconded, like as are physical 
operations, and directed to the purposes of man- 
kind, then they will become as much man’s devoted 
and never tiring servants as any physical agents 
whatever, and will cause the seed sown for the 
produce of human consumption to bring forth the 
mightiest results—‘‘ some twenty, some thirty, 
some sixty, and some a hundredfold.” 
