POSTSCRIPT. 205 



reason to suppose, of two buildings of different sizes and grades 

 of use, but similar architecture, that the larger has grown out of 

 the smaller, as there is to suppose, of certain animals of different 

 grades of organization, but connected in general plan of structure, 

 that the higher have grown out of the lower. He must regard 

 this as a perfect analogy, and very decisive of the argument, or 

 he would not have given it at such length. But what is the 

 difference between the two things.' no less than this, that we 

 never see one building grow out of another, or grow at all, in a 

 natural sense, while we do see animals come into existence by 

 natural growing, and, in their embryotic progress, pass through 

 the forms of those beneath them in the scale; it being further 

 known that the animals appeared on earth in a succession broadly 

 conformable to their grades in organization. Such are the dia- 

 lectics brought to the discussion of my views by one of the most 

 conspicuous general students of science in England. Such are 

 the powers which he has shown to give the most simple appre- 

 hension to those views. After such an exposition, can it be 

 reasonably maintained that the scientific mind of England — how- 

 ever creditably industrious, however accurate in particulars — 

 is prepared to give fair judgment upon any great generaliza- 

 tions ? 



May, 1846. 



T. C. SavUl, Printer, 4, Chandos Street, CoTent Garden. 



