NEW PUBLICATIONS, 301 
For Belgium, as a whole, he admits now, of flowering plants and 
Ferns, 1240 good indigenous species, 53 *'litigieuse," and 46 “ dou- 
teuse " species, total 1339, to whieh 43 are added as naturalized, 62 as 
subspontaneous, and 98 as cultivated on a large scale. Nearly all of 
the 1339 which we have in Britain are admitted as distinct in Babing- 
ton’s ‘Manual,’ and in this estimate Rubus fruticosus counts for one only. 
M. Crépin's botanico-geographical divisions of Belgium are as 
follows :— 
1. A Jurassic region, confined to a small part not more than 300 
square miles in area of the south-east of the province of Luxembourg, 
underlaid by Secondary Limestones. 
n Ardennaise region, a rugged hilly region, which occupies the 
remainder of the S.W. of Belgium, being an extension of the Vosges, 
forming the watershed between the Meuse and the Moselle, the prin- 
cipal rock Silurian slate, and the highest point about 2000 feet. 
3. A Central region, including the whole of Hainault and Namur, 
most of Brabant and Liége, the southern half of West and the southern 
third of East Flanders. In the southern part of this the rocks are 
caleareous, in the north argillo-arenaceous, and the precise limits be- 
tween the two are still to mark out. 
4. A Northern region, bounded on the south by a line which runs 
from west to east from Dixmude, in East Flanders, south of Ghent 
` and Mechlin, between Louvain and Aerschot, and almost coineident 
with the Limburg boundary to the Meuse. This is divided into three 
tracts: —1st. The Campine, a region of moors, bogs, and marshes, and 
wide tracts of sandy heath, covered with Broom and stunted Firs, 
which includes most of the province of Limburg and a considerable 
part of that of Antwerp. 2nd. The tract of the Polders, principally 
land reclaimed from the sea by means of great care and ingenuity by 
the Flemings, and often fertile and highly cultivated ; and, 3rd. The 
sand-hills or dunes along the extreme coast-line, and through these he 
traces the distribution of the species wit care. 
As regards the species question, M. Crépin combines faith in their 
absolute limitability and a full knowledge of the writings of the 
modern French school with a strong disposition to call in question the 
proposed species of M. Jordan and Boreau, and both an advocacy and 
practice of the study of plants under cultivation. We give a few ex- 
amples of his critical remarks :— 
