74 LECTURES ON" EVOLUTION ni 



of stratified rocks. I shall endeavour to show you 

 that there is one kind of evidence which is neutral, 

 which neither helps evolution nor is inconsistent 

 with it. I shall then bring forward a second kind 

 of evidence which indicates a strong probability in 

 favour of evolution, but does not prove it ; and, 

 lastly, I shall adduce a third kind of evidence 

 which, being as complete as any evidence which 

 we can hope to obtain upon such a subject, and 

 being wholly and strikingly in favour of evolution, 

 may fairly be called demonstrative evidence of its 

 occurrence. 



