SECONDARY LIMESTONES. 247 



though it passes for such. And when Organic fossils 

 are brought forward in proof of identities, it is but to 

 add an utter ignorance or contempt of philosophical 

 zoology arid botany to all else ; as I have already 

 shown. It will be said that I am here undoing all 

 which Geology has been so long in building up : and 

 this will be said with feelings proportioned to the la- 

 bour exerted on this limited subject, English topo- 

 graphy^ and to that affection for an object which is 

 generated by labouring on it. But all hypotheses 

 have made the same complaints : men are irritated at 

 the attacks made on their favourites, and hold fast till 

 they can hold no longer. But it is hypothesis alone 

 that I desire to overset; since, till that is done, we shall 

 not even begin to enter on the right road. 



