IV THE GENEALOGY OF ANIMALS 111 



cries " cuckoo ! " and perhaps shows the phases of 

 the moon. When the clock is wound up, all the 

 phenomena which it exhibits are potentially con- 

 tained in its mechanism, and a clever clockmaker 

 could predict all it will do after an examination of 

 its structure. 



If the evolution theory is correct, the mole- 

 cular structure of the cosmic gas stands in 

 the same relation to the phenomena of the 

 world as the structure of the clock to its pheno- 

 mena. 3 



Now let us suppose a death-watch, living in the 4*** 

 clock-case, to be a learned and intelligent student 

 of its works. He might say, " I find here nothing 

 but matter and force and pure mechanism from 

 beginning to end," and he would be quite right. 

 But if he drew the conclusion that the clock was 

 not contrived for a purpose, he would be quite 

 wrong. On the other hand, imagine another 

 death-watch of a different turn of mind. He, 

 listening to the monotonous " tick ! tick ! " so 

 exactly like his own, might arrive at the conclusion 

 that the clock was itself a monstrous sort of 

 death-watch, and that its final cause and purpose 

 was to tick. How easy to point to the clear 

 relation of the whole mechanism to the pendulum, 

 to the fact that the one thing the clock did always 

 and without intermission was to tick, and that all 

 the rest of its phenomena were intermittent and 

 subordinate to ticking I For all this, it is certain 



