2 
PROFESSOR OWEN 
CH. I. 
the subject three lectures in the Theatre of the 
Royal College of Surgeons explanatory of Hunter’s 
MS. essay On Extraneous Fossils.’ In relation 
to this course Owen remarks : ‘ The pala;onto- 
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. 
‘ 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. 
‘ 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 completedandpublished 
