322 J. D. Hooker, Introductory Essay to the Flora of Tasmania, 
Australia, how they migrated thither, we have no means of an 
swering. If the identifications.of Banksia and other Proteaceous 
ora, We must assume an extraordinary destruction of species 
that once linked it with the general flora of the globe, to account | 
than most; and we must hence, under these hypotheses, 488 % 
not only the antiquity of the flora, but that it was developed! ) 
a much larger area than it now occupies . 
any ting 
like plausible grounds, that bears upon the origin of any re 
plants now inhabiting Australia, is that of Mr. Darwin we 98 
ence to the European species, to which I have alluded at P- in 
; and are plants of a later creation. al have vel if 
Pointed out the difficulties attending its adoption, the ob 
which is the admission of such a cold climate in the in nan | 
that this | 
ation, if conceded, must have been een and 9 ’ 
i. very many genera and species into the troples@P 
likely, when we consider the fico character of the — 4 
