104 REPORT OF THE COMMISSIONER OF FISHERIES. 
the eggs of the other species. Not only would spent fish follow up the 
spawning fish and eat their eggs, but gravid females were found to do 
the same thing. The breeding times of the common white-fish and 
Stanley’s white-fish were supposed to overlap because the species were 
‘aptured together, but it appears that the earlier spawner (C. stan- 
leyi) was probably there at this time mostly for the eggs of the common 
white-fish. 
In this locality there are no commercial fisheries, but occasionally 
the native French inhabitants are allowed to net the white-fish under 
restrictions. The fishing as now regulated is chiefly important to the 
sportsman, but the abundance of the white-fish in a lake system of 
such extent suggests a possible commercial fishery under proper regu- 
lations, which would afford to the inhabitants of Aroostook County 
at least a delicious fish for the table, both fresh and cured. <A limited 
net fishery, restricted to the summer months and to certain localities, 
would do no more damage, if as much as is done by fishing on the 
spawning beds, which is now permitted. 
Onion River basin, in Hancock County.—In August and early Sep- 
tember the Union River basin was visited and the general fish fauna 
of the region, especially Green Lake, Branch and Floods ponds, was 
investigated. Attempts were made to secure specimens of the Floods 
Pond saibling, locally known as silver trout, supposed to be Salvelinus 
aureolus, but without success, although various methods were tried. 
In June, 1904, however, another visit was made to Floods Pond, and 
a good collection of this fish was secured. From information fur- 
nished by reliable men and from observation, it appears that the silver 
trout is very much scarcer than formerly, and the fish now caught are 
not so large. There seem to be but a few weeks in May and June 
when they will take a hook. The usual method of fishing is by band 
line in from 30 to 40 feet of water on the outer edge of a reef, the best 
bait, as a rule, being cut chub and fresh, uncooked lobster, though 
occasionally a fish is taken at or near the surface or in deep water on 
a troll, and by live minnow or worm bait. This trout is a rich, fat, 
and delicious fish at this time of year. 
The stomachs of the specimens examined this season usually con- 
tained small smelts. Many were infested with small tapeworms, large 
numbers often being found in the alimentary tract of a single fish. 
Rainbow Lake, in Piscataquis County.—The Bureau having received 
two specimens of a peculiar trout from Rainbow Lake, closely related 
to if not identical with the so-called silver trout of the Union River 
basin, though of a smaller size, it was considered desirable to visit the 
locality in an effort to obtain more and better specimens and to make 
a study of the lake and its inhabitants. 
Although quite large, being about 7 miles long by 2 or more miles 
in extreme width, and fairly deep in places, Rainbow Lake has a very 
