Botany and Zoology. 121 
and against the prevailing direction of the winds. It may be contend- 
ed that such a migration would have peopled these islands solely, or 
mainly, with cértain of the more transportable classes of plants; and 
that the result must be, that the number of species belonging to each 
natural order would be great in proportion to the facility with which 
_ On the other hand, the existence of such a continent, during the pe- 
riod when these islands bore the plants which they now produce, would 
which Vogel had embarked remained but a few hours. e same 
and the same port, Santa Cruz, had been touched at by the 
Antarétic Expedition during the previous winter. — Teneriffe is always 
, ist, as the opening scene of the 
il extent the 
; His lifelike 
Pictures of the natural phenomena, observed during an ascent of the 
: i Ise to many succeeding scientific trav- 
hts and steps from closet studies and 
to seek far distant scenes, in 
bors of Humboldt, who there first appreciated in rant fu 
ants 
uth, : 
eseried: one hurried glimpse of its very 
Peak itself is seldom d ‘ 
s all we obtained : it 
16 
- 
apex, from upwards of sixty miles distance, wa 
Srconp Serigs, Vol. IV, No. 10.—July, 1847. 
