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368 NEW PUBLICATIONS.
The deficiency in the upper line of numbers, it must be borne in mind,
is caused by the absence from Middlesex of a large number of character-
istically maritime species. Fr6m the 826, the 58 species require to
be deducted to represent the flora as it now stands. No doubt the
county list is far more likely to be lessened than increased in the future.
The remainder of the work is occupied by a series of interesting
biographical notices of the older botanists who have contributed to the
knowledge of the flora of the county. This is derived to a consider-
able extent from unpublished material, the Sloane manuscripts in the
British Museum being the principal source of fresh information. Mr.
Worthington Smith has contributed a list of the Hyraenomycetous
Fungi of the county ; the Rev. J. M. Crombie a notice of its Lichens;
and Dr. Braithwaite and the Eev. W. M. Hind, a list of Mosses and
Hepaticse.
Compendium of the ^ Cybele Britannica,-' or, British Plants in their
Geographical Relations. By Hewett Cottkell Watson. Part II.
Thames Ditton. Printed for private distribution. 1869. (Pp. 201-
424.)
It is just a year since we noticed (' Journal of Botany,' Vol. VI.
374-377) at some length the first part of this excellent and useful
book. Mr. Watson has carried out tlie intention he expressed in the
preface to that part, and has not allowed 1869 to pass away without
completing liis ' Compendium ' so far as the native species are con-
cerned.
In this second part, 880 species are treated in accordance with the
formula of eight lines, which we explained in our notice of Part I.
The amount of information comprised in each of these formula? is
really amazing, and each aff"ords an excellent example of what may be
effected by a judicious system of condensation and abbreviation.
It is quite unnecessary ^o recommend a book which must take its
place as essential to the library of every British botanist. In a work
of such extent there must be, of course, many points upon which any
two individuals will hold different opinions ; but, after all, the book is
mainly a record of facts, and it is on this account that it is of so great
value, and lays all students of our native flora under obligation to its
author. On p. 348, in the list of counties for Wolffia arrhiza,
" Hants " is erroneously entered for Kent.