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•306 NEW PUBLICATIONS.
from one another being indicated by means of italics, and the descrip-
tive portion of the work being followed by an analytical key, con-
structed upon the same plan as those given in Boreau's ' Flore du
Centre.'
The point suggested by the works upon which Ave feel most inclined
to remark, is the question of what is the proper rank in the scale of
nature, and what the relationship to each other of the individualities
characterized in them. Since Weihe and Nees von Esenbeek pub-
lished the ' Rubi Germauici,' the authors of floras and monographs for
tracts of country in Central and Western Europe fall easily into
three sets, in the plan they have followed in dealing with Brambles.
First come those who, like Koch and Bcntham, treat Rubus fruticoHus
as a single undivided species. The second and most rmmerous class
follow Weihe and Nees in admitting and characterizing a comparatively
limited number of so-called species. To this second class belong
Arrheuius and Fries in Scandinavia, Dumortier in Belgium, Wimmer
and Von Garcke in Germany, Godron in France, and Mercier in
Switzerland ; and in Britain Professor Babington having made his
debut as a fair average representative of this class, has in no way
changed his position through the course of his successive writiags, his
present work, as regards the general plan of species-limitation, being
quite in accordance with the Synopsis of 1846. And we have a third
class of authors to which belong P. J. Miiller and Wirtgen (as tested
by his fasciculus) in Germany, and which, by his present work, M.
Genevier represents for France, who acknowledge and define a very
much larger number of what they also call " species."
The following passage will show clearly in what light M. Genevier,
as representing the third class, regards the species which he has esta-
blished and characterized.
" In the introduction to^his ' Diagnoses ' of new and misunderstood
species," M. Jordan says, " We have not in our researches quitted for
a single instant the domain of positive reality. It is not theories, but
material facts that wc have to furnish ; it is not a certain manner of
viewing things, or a particular opinion that we are going to express,
but facts well and duly proved by the ordinary process of experience
that we proceed without fear to submit to tiie examination of all
friends of science. We have simply to unfold that which we have
seen, experimentalized upon, proved, that which even those who are