TRANSMUTABLE. 219 



globe, its present physical features." 



Owen puts it in this way. t: No one, save a 

 prepossessed uniformitarian, would infer from the 

 lacing of the permian, and the opis of the trias, 

 that the Lamellibranchiate mollusks existed in 

 the same rich variety of development at those 

 periods, as during the tertiary and present times; 

 and no prepossession can close the eyes to the 

 fact, that the Lamellibranchiate have superseded 

 the Palliobranchiate bivalves." And then, he 

 continues, that to suspect, that the existing genera 

 of siphonated bivalves, and univalves, abounded in 

 permian, triassic, or oolitic strata, and that they 

 have escaped observation, because some Lamelli- 

 brarichiates, with open mantle, and some holosto- 

 matous and asiphon ate gasteropods, have been found 

 in secondary strata, u is not more reasonable, as it 

 seems to me, than to conclude that the proportion 

 of mammalian life may have been as great in 

 secondary, as in tertiary strata, because a few 

 small forms of the lowest orders have made their 

 appearance in triassic and oolitic beds. 11 (Op. 

 Cit., p. 61.) 



The reviewer wishes to make out these mam- 

 malian remains, as proof of a "great abundance." 

 (See p. 375.) 



2nd. I object, generally, to the inferences of 

 the reviewer, because he has drawn one of great 

 importance to the theory he supports, from facts 

 assumed, but not proved, to be true in geology. 



The discovery of celts, in strata known to be 

 pre-adamic, was made the subject of a paper, and 



