—47— 
longidens. Lophozia Lyoni and Lophozia barbata appear in most of the rock 
collections and were by far the most common species. Lophozia porphyroleuca 
and the other log-loving species very rarely occur. The sterile Fossombronia is 
probably the species faveolata, which has been previously reported from the 
Apostle Islands, Wisconsin. In its large size the Sphenolobus minutus was very 
like the specimen distributed by Underwood and Cook in American Hepaticae, 
collected by J. B. Leiberg, Kootenai Co., Idaho, 1890. It grew in rather pure 
tufts on rock edges. 
The finding of 36 species representing 23 genera of hepatics in this collec- 
tion shows a very rich field, inviting further study. Prof. Allen by request adds 
the following observations: 
“Isle Royale, politically a part of Michigan, lies near the north shore of 
Lake Superior, only about fifteen miles from the nearest point on the Canadian 
mainland. The greatest length of the island from northeast to southwest, is 
approximately forty-five miles, its greatest width nine miles. The island con- 
sists of a series of parallel ridges, and valleys separating them. In the valleys 
are numerous lakes of varying size, as well as bogs and swamps. The ridges are 
as a rule gentle in slope on their southeast sides, but more steep and sometimes 
precipitous to the northwest. Continuations of the ridges form peninsulas, 
which in turn are continued in several cases by rows of small islands. The 
coast of Isle Royale is, therefore, much broken, especially at the northeastern 
end. There are numerous small streams, emptying either into the interior lakes 
or into Lake Superior. 
“The collections upon which the present list is based were made between 
August 7th and September 14th, 1901. Camp was established near the deserted 
lighthouse on the point of the peninsula bounding Rock Harbor on the south. 
This is the lighthouse referred to in the notes. Extensive collections were made 
about the shores of Rock Harbor, which is the deepest and, except for two small 
bays, the southernmost of the numerous indentations of the coast at the north- 
eastern end of the island. The shores of the two small indentations referred to, 
Tonkin Bay and Conglomerate Bay, were also fully explored, as well as the ad- 
joining mainland and several of the chain of islands extending northeastward 
from the point on which we were encamped. One trip was made across the 
peninsula which separates Rock Harbor from Tobin’s Harbor, the next indenta- 
tion to the north. Several trips were made from the head of Conglomerate 
Bay up the valley of a small stream, the outlet of Summer Lake, to the Lake 
itself, and one trip to Benson and Forbes lakes, which lie in the first valley 
northwestward from Rock Harbor. Sumner, Benson, and Forbes lakes are 
among the smaller of the interior lakes of Isle Royale; the former is in process of 
obliteration by a Sphagnum bog, which at the time of our visit had covered per- 
haps one-third of the area of the Lake.” 
“At one time Isle Royale supported a sufficient population to maintain a 
separate county organization. There were two small cities on the island at that 
time, one of which, Ransome, was located on the northern shore of Rock Harbor, 
nearly opposite the site of our camp. Traces of the foundations of many of 
