THE ALGH-VEGETATION OF THE FHEROESE COASTS 87 
where they live together under the same or very similar biological 
and ecological conditions, and Dr. Bérgesen proposes for these 
large groups the name of Formations. The Formations and 
successful. Under the heading of the general character of the alge- 
vegetation, there is an instructive diagram giving a general view of 
the different alew-formations and associations, the different levels 
at which they occur, and the manner in which they replace each 
other. From this diagram we see that the number of Algs- 
associations reaches its maximum in the littoral region and then 
grodually decreases on eac 
vastly interesting wi “of the subject is treated in the fourth 
part of the paper, namely, the origin of the Feroese marine flora 
and its relation to that of the other countries. The author dis- 
4 : 
the mari gee 
after the Glacial Period across the sea from the nearest countries, 
principally from the British Islands, but also from Norway and 
Iceland. present flora is to be regarded as a scanty selection 
of that of Northern Scotland, with the addition of some few more 
northern species not found in the British Isle 
Finally, the author ie with the duration of a and has eo 
and conditions of gro and time of fructifica ind 
literature includes aalie: eight references. The ‘iagmeedgon ‘ae 
particularly good. They are all reproduced from photographs of 
various typical alge- acapsiahione__-Foratiek Gigartina, Corallina, 
d 
ike. 
Besides this valuable contribution of Dr. Borgesen to the botany 
of the Feroes, there is also an appendix by himself and Helgi 
Jonsson, which deals with the distribution of the marine alow of 
the Arctic Sea and of the nos tenrnss part of the Atlantic. The 
object of this paper is to compare the Feroese and the Icelandic 
wn 
Pere ama: in ae to the boundary caret gmste and 
Scotland; as well as the species from the coast of New England. 
The area is divided into seventeen districts, and a comparison of the 
respective marine pct is presented in the form of tables. Sub- 
sequently lists are given of the aber which form certain groups 
and Warm Boreal. The d ‘istribution of the Chlorophycee and 
than that 
Cyanophycea, being less well known of the Floridee and 
paaeplace’, is treated on more Tinted lines, both as to area of 
distribution and number of species cited, and is given seep 
a ak A a aii’ of fifty-four works comp 
valuable Appendix. Ra pre 
