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A LIST OF THE MARINE ALG.E OF BERWICK-ON-TWEED. 381
by including all new species published up to the present year, and
by embodying his own researches into the genus Fissulcas, and
those of M. Cardot into the more puzzling Spkarjuuni. There is a
queer printer's error in the introduction, which makes it appear
that the expected publication of several new species in certain
journals is, instead of being worth noting, " worth nothing."
A. G.
A List of the Marine Alga of Benvick-on-Twced. By E. A. L.
Batters, B.A., LL.B., F.L.S. [Reprinted from the Ber-
^vickshire Naturalists' Club Transactions, 1889] . Alnwick,
pp. 171, tab. 5.
Mr. Batters is to be congratulated on the publication of his
admirable list. The performance is practically his own from
beginning to end, since as a foundation he had merely the meagre
enumeration of the seaweeds of this district made thirty-five years
ago by Dr. Johnston. There is probably no other locality in
Britain so rich in species as the coast northwards of Berwick-on
Tweed, and when it is stated that the exploration of it has been
accomplished by Mr. Batters almost, if not, single-handed, the
student of phycology will know the extent of labour and research
involved. To do this thoroughly Mr. Batters has visited Berwick
at all seasons, and has made particular note of those minute forms
microscopic forms as they are called—so commonly overlooked.
This examination has led to the discovery of forms new to science,
as well as to Britain, among which may be mentioned here the
generic form Battersia of Keinke. There was another difficulty in
performing this task. Since tlie publication of Harvey's ' Phycologia
Britannica,' the nomenclature of British AlgiC has been revolutionized
and numerous species have been added of whicli there has been
little more than obscure record made in journals. He had therefore
to adopt a new system in consonance with modern lights in
phycology. In this again Mr. Batters has been not only judicious
in selecting from among rival systems, but almost painfully exact
in the quotation of names, &c.
Under each species there are cited, a published description,
figure, no. in exsiccata, synonymy (where such exist), its habitat,
and in nearly all cases a discussion of the position, affinities, &c.,
of the species. At the beginning there is an introduction dealing
with the distribution of tlie species in the district, and a list of
classes, orders and genera. At the end an artificial key, a bibliography,
index and description of plates, as well as a list of the
species in the ' Phycologia ' Britannica that have changed name
since its puljlication, botli old and new names being given. From
tlu! list it appears tliat there are 119 genera and 271 species in the
Berwick Marine Flora,— a very limited district,— and 78 of these
species liave l)oen added to the British Flora, since the publication
of tlie 'Bliycologia Britannica.'
It hardly needs saying, therefore, that we liave here by far the
moat solid contribution to British phycology since the publication