312 BOTANICAL INFORMATION. 
trust the result of this journey will be a publication on the 
classical regions he will have visited, similar to that which we 
have here brought before the notice of the public. 
Plants of Spain and of the Swiss Alps, for Sale. 
A considerable collection of plants has been brought by 
M. Reuter, herbarium-keeper to M. Boissier, of Geneva, 
mentioned above, from New Castille, which he wishes to 
dispose of, in sets, at 25 francs per hundred: each set con- 
taining from two to three hundred species, chiefly peculiar to 
Spain. The same botanist would also like to enter into 
arrangements for supplying the vegetable productions of the 
Swiss Alps. 
The Regions of Vegetation : being an analysis of the distribution 
of vegetable forms over the surface of the globe, in con- 
nexion with Climate and Physical agents. By RICHARD 
BnuissuLEY Hinps, Esa., Surgeon, R. N. 
However closely we may investigate the subject of Climate, 
to account for the various peculiarities of the vegetable 
ingdom, we shall cease from the enquiry with the convic- 
tion, that there are still many circumstances which it does 
not explain. In situations widely removed, but to all 
appearance enjoying a very similar climate, there occur fea- 
tures in the comparative vegetation which cannot be traced 
toits influence. "Those combinations of atmosphere, tem- 
perature, moisture, light, and soil, all of which assist to con- 
stitute or modify climate will not, after the minutest scrutiny, 
satisfy us as to the laws regulating geographic distribution. 
Fully sensible that Nature, by which we always understand 
the Omnipotent Creator, has proceeded on an uniform and 
perfect plan, when calling into existence all organized beings; 
it becomes a matter of interest to enquire whether the diffu- 
sion of man or animals will aid us in ascertaining the dis- 
