6 NATURE COMPARED TO A MACHINE 

 the mechanism, so, in nature, we find wheels 

 within wheels — a continuous interaction of 

 innumerable parts all contributing to the 

 orderly functioning of the whole system which, 

 like the clock, works with the utmost precision. 

 In both cases there is the power — Life, and 

 consequently movement. In nature's in- 

 stance, though we cannot investigate the 

 " mainspring," it is always open to us to study 

 the " works " and endeavour to fit them to- 

 gether as pieces of a mighty puzzle. As these 

 pieces fall into their places they are found to 

 correspond perfectly ; when gaps appear it is 

 only that we have failed in adjusting the parts. 

 The fitting together of this puzzle becomes 

 complicated when dealing with nature's in- 

 tangible connections, for though these links 

 are invisible they are none the less real and 

 essential to the movements of nature's 

 machinery. 



A review of the habits and performances of 

 some of the creatures of the Animal World 

 will, I think, show that the seen and the 

 unseen are closely connected. 



In the so-called lower creation, we note that 

 creatures living independently of man are, for 

 the most part, wild and shy, particularly as 

 regards man. The reason for this is, of course, 

 that danger menaces them on all sides : they 



