112 REPORT OF COMMISSIONER OF FISH AND FISHERIES. 
of some small trout or salmon-like fish that he had caught at the upper 
end of the east branch below the foot of Grand Lake. He reported 
that they ran from 6 to 10 inches long and were sexually mature at 
that size. These interesting fish seemed to be identical with the 
small salmon found inthe Presumpscot River below Sebago Lake. <A 
specimen of a ripe male only 6 inches long was obtained. No adult 
salmon were observed there, though it was learned that not longer 
than four years ago they were plentiful on the spawning-grounds 
within 2 miles of the dam at the foot of Matagamon Lake. 
At least 17 species of fishes inhabit Matagamon Lake and neighbor- 
ing waters. At one haul of a 12-foot seine in the mouth of a small 
brook 12 species were obtained. Of these, 3 were previously unknown 
from Maine waters, and the recorded range of 4 more was extended. 
The most interesting feature of this collection scientifically was the 
discovery of 2 unrecognized species of the minnow Leuciscus and the 
occurrence of the minnow Nofropis muskoka, previously recorded only 
from Muskoka Lake, Ontario, together with the finding of the ‘‘shore- 
fish” (Fundulus diaphanus), the stickleback (Gasterosteus atkinsit), 
and the chub (Semotilus atromaculatus) in these new localities. 
Incidental to the clam-planting experiments on Casco Bay, a number 
of interesting observations were’ made in the Harraseekett River, a 
tidal estuary. The usual littoral fishes of the region were found in 
abundance. Young blue-fish (Pomatomus) were very common, and 
some had been seen the previous season, when they were supposed by 
fishermen to be butter-fish (Poronotus). Their presence in such large 
numbers is remarkable, since adults of this species have not been 
noticed in these waters, and only now and then has one been caught 
in pound-nets in the outer waters of Casco Bay. In October young 
menhaden (Brevoortia) from 3.75 to 4.75 inches long were seined, and 
were also observed in brush weirs. The young of this species had not 
before been positively known to occur on the Maine coast. White 
perch (Morone) were uncommonly numerous, and the fishermen, owing 
to their unfamiliarity with the species because of its previous searcity, 
identified it as the sea bass. On October 21 a jumping mullet (Jugal 
cephalus) was taken in a weir, this being the first record of the occur- 
rence of this southern species in Maine waters. 
MODEL STUDY OF AN INDIANA LAKE. 
In the summer of 1899 the Commission began a physical and _ bio- 
logical survey of Lake Maxinkuckee, Indiana, the desire being to 
make such a study of this lake as would serve as a model for the 
_ investigation of all similar lakes. The objects and scope of this 
inquiry are indicated in the report for 1900. It very early became 
manifest that satisfactory data concerning many of the problems that 
came up for consideration could be secured only by carrying on the 
observations throughout at least one entire year. Therefore, when the 
