30 REPORT OF THE COMMISSIONER OF FISHERIES. 
trout has obtained a sufficient foothold in any New England waters to 
maintain itself by natural reproduction. Enduring as it does a some- 
what higher temperature than the native trout, it was hoped it would 
succeed in waters which, owing to deforestation or other causes, have 
become unsuited to the latter. 
The successful acclimatization of the steelhead trout in Lake Super- 
ior and other inland waters makes it desirable to propagate this species 
ona larger scale. The latest reports from Lake Superior give infor- 
mation that the steelheads spawned last spring in nearly all of the 
tributary streams along the north shore of the lake. 
The landlocked salmon has been successfully introduced in several 
ponds in Maine where it is not indigenous, and in Pierce Pond with 
marked results. This pond is 9 miles long, about three-fourths of a 
mile in width, and over 100 feet deep in places, and is practically land- 
locked. The plant was made eight years ago and forgotten until the 
summer of 1903, when one specimen was caught weighing 163 pounds, 
one 14 pounds, several 12 pounds, and some 9 and 7 pounds. Quite 
a number weighing 5 pounds were caught, and these were the smallest 
taken. When the above information was received, these salmon were 
said to be quinnats, the result of plants made nine years ago, but an 
investigation has demonstrated that the introduction of the quinnat 
salmon proved a failure. It would be interesting to learn the results 
of a similar investigation of the reported success in acclimatization of 
quinnat salmon in certain fresh-water lakes in France. 
FISH-CULTURAL NOTES. 
In addition to the regular work of propagation, fish-cultural experi- 
ments have been conducted at various points. 
It being a recognized fact that landlocked salmon from Green Lake, 
Maine, have a much greater average weight than those from Grand 
Lake Stream, it was determined to compare the rate of growth by 
carrying through the season at the Craig Brook station parallel series 
of fish from these waters. It was shown that under similar conditions, 
and with the same water supply for a given length of time, landlocked 
salmon of Green Lake grew more rapidly than those of Grand Lake 
Stream; the Green Lake fish also showed greater endurance, there 
being a smaller mortality among them than among the Grand Lake 
Stream lot. 
For observation and experiment in the domestication of landlocked 
salmon, one brood hatched from the eggs of 1899 was maintained in 
the most capacious pond available, and a special study was made of 
the development of the reproductive organs and the character of the 
offspring. The lot comprised 173 fish, confined ina pond with an 
area of 45 by 60 feet and a mean depth of about 6 feet, and in Novem- 
