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are emptied into the western ocean. These two longitudinal
divisions are subdivided transversely into provinces or
groups of counties, which together constitute the basin of
a principal river, or have some other physical peculiarity in
common. The mesial line is not continued northward of
Inverness, where Scotland becomes very narrow; and the
portion of Inverness itself, eastward of Loch Erricht, is
united with the East Highland province. In bite manner,
the extreme north of Lancashire is united with the Lake
province. The accessible information with reference to
Ireland is very imperfect.
The facts embodied in the following pages are derived
from the principal published lists of localities (among which
it is hardly needful to say that the ‘ Phytologist’ and Mr.
Newman’s 'H isto ry ’ stand pre-eminent in this respect);
from the habitats preserved in the herbariums of the Botanical
Societies of Edinburgh and London (the contents of
the former having been obligingly communicated by Mr.
Lawson); from our own herbarium and observations; and
from several local lists kindly furnished by the gentlemen
whose names are quoted. We are also indebted to H. C.
Watson, Esq., for many valuable notes, corrections, and
suggestions, by the aid of which our list is rendered much
more complete and perfect than it would otherwise have
been.
Our space would not permit the insertion of authorities,
except in a few rare instances, for habitats which have been
previously published. B. S. B. refers to the Herbarium of
the Edinburgh Botanical Society; B . S. L. to that of the
London Society. The use of the signs [ ] imphes some
doubt as to the correctness of the enclosed statements.
The names given to the Provinces, and the counties they
severally include, are shown below. The arrangement of
the Eerns is alphabetical, as in the preceding descriptions ;
and they are followed by the Club-Mosses, &c.
1 . P e n in s u l a .— Cornwall, Devon, Somerset.
2 . Ch a n n e l .— Hants, Sussex, Dorset, W ilt s .
3 . T h am e s .— Herts, Middlesex, Kent, Surrey, Berks, O x ford,
Bucks, Essex.
4. Ouse.—Huntingdon, Bedford, Suffolk, Norfolk, Cambridge,
Northampton.
5 . S e v e r n .— Warwick, Gloucester, Monmouth, Hereford,
AVorcester, Stafford, Salop.
6 . S . W a l e s .— Eadiior, Brecon, Glamorgan, Carmarthen,
Pembroke, Cardigan. Ii
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