2 PROFESSOR OWEN ch. I. 



the subject three lectures in the Theatre of the 

 Royal College of Surgeons explanatory of Hunter's 

 MS. essay 4 On Extraneous Fossils.' In relation 

 to this course Owen remarks : ' The palaeonto- 

 logical is now the only department of the museum 

 which has not been systematically elucidated in 

 this theatre, to the extent at least of the time at my 

 command. ... It will be observed that Hunter, 

 in his general collection, illustrates the three ways 

 in which the anatomy of animals may be broadly 

 and philosophically followed out. 



' There is a series of organs in their mature 

 state, traced from their simplest to their most com- 

 plex conditions, as in the first division of the 

 physiological series. 



' There is a series of the progressive changes 

 or stages in the development of each organ in the 

 embryo and foetus of different species, as, e.g., in 

 the second division of the same great series. 



1 There is, thirdly, a series of entire animals, oc- 

 casionally dissected to show the general collocation 

 of their organs, and arranged, as in the physio- 

 logical series, in the ascending order, commencing 

 with the more simple forms and proceeding gra- 

 dationally to the Mammalia and to Man. 



1 The Council of this College has confided to 

 me the making of the catalogues of these exemplifi- 

 cations of animal structures, and of the methods 

 by which those structures may be studied. And 

 those catalogues have been completed and published 



