136 INDUCTION. 



perties apart from the rest, saving a certain parallelism 

 with a few other Kinds, the most similar to itself. In 

 organized beings, indeed, there are abundance of pro- 

 positions ascertained to be universally true of superior 

 genera, to many of which the discovery hereafter of 

 any exceptions must be regarded as supremely im- 

 probable. But these, as already observed, are, we 

 have every reason to believe, truths dependent upon 

 causation. 



Uniformities of coexistence, then, not only when 

 they are consequences of laws of succession, but also 

 when they are ultimate truths, must be ranked, for 

 the purposes of logic, among empirical laws ; and are 

 amenable in every respect to the same rules with 

 those unresolved uniformities which are known to be 

 dependent upon causation. 



