242, THE JOURNAL OF BOTANY 
found in Mr, Williams’s catalogue. Eleven plates illustrate this 
section. 
_ Dr. Trelease’s list of Sphagna, determined by Dr. Warnstorf, 
includes material other than that collected on the Harriman Expe- 
dition, and gives a total of 22 species and 19 varieties, two species 
being new to Alaska. 
rok 
Dr. Trelease gives a list of 58 species and 16 varieties of Pteri- 
dophyta, illustrated by one plate and a text-figure. 
either trouble nor expense have been spared in the preparation 
of this important contribution to the Alaskan flora, and great credit 
is due to all who have taken part in its production. 
; A. & E. 8. Gepr. 
The Flora of the Parish of Halifax. By B. Crump, M.A., & Cuaries 
Crosstanp, F.L.8. 8vo, pp. lxxv + 316, Halifax Science 
Society. 1904. Price 10s. 6d. . 
from phenogams to fungi 2636 are here recorded. We congratulate 
the writers and their numerous helpers on their industry in seeking 
out ‘fresh things,” and thus adding to our knowledge of local 
botany. In this department their work is above criticism. The 
get up of the Mora leaves nothing to be desired, except a really 
map. We find, with the one-inch Drift Survey lying before 
us, half the information of this book is rendered useless to outsiders, 
who do not know the surface geology or topography of the parish. 
When such a full list was being produced, would it not have been 
tion might be expected from each new work. Altitude in Halifax 
i d—and we can well believe it—is the chief 
cause of change in the flora. Why, then, has such a good chance 
been lost of doing original work, by specializing this question for 
éyery common and uncommon species 
__A step in the right direction is taken in the introductory chapter 
on plant-distribution and associations, based on the lines laid down 
by the late Robert Smith; but it tends to show the slight value of 
hurried work. It seems futile to seek to describe the relations of 
species inter se till we have fully mastered the simple biological 
