— 74 — 
The evening sessions were held in the large room over the boat house 
and were manifestly interesting, topics of the day’s observation and collec- 
tions so freely discussed that the scientific part of the Symposium lost noth- 
ing on account of the sociability which it fostered ; in fact both features have 
now become so pronounced that there is little doubt that the next meeting 
will be more than a week’s duration. 
The whole atmosphere of Mountain Lodge has the greatest homelike 
moral medium about it, that to breathe it is simply delightful and reflects 
great credit upon Mr. A. G. Shepard, Jr., the trustee in charge, and on Mr. 
and Mrs. Studor, the managers, and we trust they may always be so success- 
ful in maintaining it. Philadelphia, Pa. 
The plate here reproduced is by courtesy of the Club. — E d. 
BOOK REVIEW. 
A Revised Key to Hepatics of the British Islands. By Symers M. Mac- 
vicar, 20 pp. 8vo. Eastbourne, 1905. Published by V. T. Sumfield, 
Station street, Eastbourn, England, @gd. 
A review of the Census Catalogue of British Hepatics appeared in the 
March, 1906, number of The Bryologist and recently we have received 
another work by the same author, entitled as abo.ve. The Preface contains 
some useful hints in practical working for the beginner. We have had no 
chance to tests the keys but they appear to be carefully worked out. As 
stated they are intended to give beginners an indication to the species so as 
to enable them to identify their .specimens from the description in a text 
book. A. M. S. 
SOME CHARACTERISTICS OF LOPHOZIA 1NFLATA AND 
CEPHALOZIA FLUITANS. 
Caroline Coventry Haynes. 
The above mentioned species with Lophozia injiata (Huds.) M. A. Howe 
var. heterostipa Lindb. share the following traits : in being aquatic, though 
the Lophozias are also terrestrial in habit ; in showing the same prostrate 
manner of growth : in possessing bifid leaves with obtuse lobes ; in being 
dioicous. On closer examination, however, this Cephalozia fluitans (Nees.) 
Spruce, will be found to possess characteristics peculiar to this genus, such 
as the position of the perianth on a short lateral branch, the numerous stout 
flagella arising from the axils of the underleaves in a truly postical manner: 
the linear-fusiform thin perianth with tristichous .involucral bracts toothed at 
the base, the innermost embracing the perianth. 
On the other hand, the delicate flagella of the Lophozias arise variously 
from the mid-axil of a leaf or from its postical angle: the perianths occur at 
the apex of a stem or of a long leafy branch; the involucral bracts are dis- 
tichous and are similar to the stem leaves, often smaller and are remote from 
