72 NATURAL THEOLOGY. 



Metamorphoses might have been effected by these 

 appetencies, if the theory were true ; yet not an 

 example, nor the pretence of an example, is offer- 

 ed of a single change being known to have taken 

 place. Nor is the order of generation obedient to 

 the principle upon which this theory is built. The 

 mammae* of the male have not vanished by inusi- 

 tation ; nee curtorum, jjer multa scecula^ Judceorum 

 propagini deest prcBputium. It is easy to say, and 

 it has been said, that the alterative process is too 

 slow to be perceived ; that it has been carried on 

 through tracts of immeasurable time ; and that the 

 present order of things is the result of a graduation, 

 of which no human records can trace the steps. 

 It is easy to say this ; and yet it is still true, that 

 the hypothesis remains destitute of evidence. 



The analogies which have been alleged are of 

 the following kind : The hunch of a camel is said 

 to be no other than the effect of carrying burdens ; 

 a service in which the species has been employed 



* I coiifoss myself totally at a loss to guess at the reason, either 

 final or efficient, for this part of the animal fianic: unless there be 

 some foiuKlation for an opinion, of which I draw the hint from a 

 paper of Mr. Everard Home, (Phil. Transact. 1799, Pt. 2,) vix. 

 that the mamniaj of the foetus may be formed before the sex is de- 

 termined.""' — (.,Vo/e of I he du'Jior.) 



^^ The paper alluded to is upon Hermaphrodites, in vol. Ixxxi.x. 

 p. 157, and the suggestion is in the renuirks upon the want of 

 ovaria in certain monstrous births, and the male parts being found 

 instead. The author (Sir E. Home) suggests thai this may be c x- 

 plained by supposing the ovum, before impregnation, to have been 

 equally adapted to becoming either a male or a female fatus. 



