Notice of Dr. Hooker’s Flora of New Zealand. 343 
countenance to such an hypothesis; the one showing that the necessary 
sothe influence of climate in directing the migration of plants and 
t 
ideation: It follows from what is there shown, that a change in the 
Telative positions of sea and land has occurred to such an extent, since 
fe) 
(where land-shells, still existing in Italy, and which could not have 
crossed the Straits of Messina, are found imbedded on the flanks of 
Etna high above the oe —_— which Sir Charles Lyell states 
that most of the plan animals of rice ere are older than the 
mountains, plains, aa rivers they now inhab 
It was reserved for Professor Edward =e one of the most ac- 
complished naturalists of his day, to extend and enlarge these views, 
and to illustrate by their means the natural history of an extensive 
w 
ored to illustrate in this Essay. I know of no other way in w ih I can acknowl- 
edge the extent of my obligation to him, thar che adding that I should never have 
taken up the subject in its eet form, but for the advantages I have derived from 
harles Lyell’s works — Tam ee for the ae pies gi those 
es that are essential to of e 1 geolog 
mean, that affect the acute od exti neni dispersi and yoga uent Solston of 
organic mae 8 ~oeee though botanists. ane differ in opinion as as to the views he enter- 
n and ence of ies) 
there is, I thinks but one as to the is and originality _— = grea on 
: iven a di 
in this department, but for an example of oT . reasoning on the facts he has 
collected Peteniing the distin of plants and animals. I have no hesitation in 
recommending the ‘ Principles of Geology Pp tas Now Zonland student, of Samal 
poe ost important os aig 
ane of heen g 9, et 8p 702, and Address to the Geological So- 
. wine London by the Horner, Esq.), in 1847, p. 66. 
