526 
APPENDIX. 
[B. 
there is another genus almost equally dispersed, which is, 
however, on the North-west Coast reduced to three species. 
This is Dodonsea, whose maximum is certainly in New South 
Wales; within and beyond the tropic, upon the coast, and 
generally in the interior of the country, extending also to 
the southern extremity of Van Diemen^s Land. 
Our very limited knowledge of the Flora of this vast con- 
tinent (excepting of a part east of longitude 144°, and 
included between the parallels of 31° and 35° in New 
South Wales) is entirely confined to the vegetation of its 
immediate shores, upon every distinct coast of which, land- 
ings, more or less frequent, and under various circum- 
stances, have been, effected ; although of all, very consider- 
able portions remain unexplored, and of the line of West 
Coast, (properly so denominated,) the shores of Shark’s 
Bay, and some few parts south of it, have alone been scien- 
tifically investigated. The interior within the tropic remains 
entirely in obscurity ; the continental defect of a want of 
large streams having a distant source, to aid a penetration 
to the internal parts of the country, together with other 
effectual obstacles, draw at present a veil, and forbid all 
research into its Natural History and character, which will 
not be removed for very considerable periods (perhaps ages) 
yet to come ! 
It was the general remark made during a former ex- 
pedition in the interior of New South Wales, that no ab- 
solutely entire change takes place in the vegetation east 
of the meridian of the new settlement named Bathurst ; but 
that the plants of the coast were more or less frequent 
at a hundred and fifty miles from the sea, although in a 
country estimated at about two thousand feet above its 
level. Having to this circumstance added a remarkable 
and obvious sameness (arising from an extensive dispersion) 
