FOOTNOTE:
[A] Note—"As already stated, the trout of Yellowstone Lake certainly came into the Missouri basin by way of Two-Ocean Pass from the Upper Snake River basin. One of the present writers has caught them in the very act of going over Two-Ocean Pass from Pacific into Atlantic drainage. The trout of the two sides of the pass cannot be separated, and constitute a single species."
Jordan & Evermann.
THE TROUT—NATIVE AND PLANTED
A Place to be Remembered
O MANY people a trout is merely a trout, with no distinction as to variety or origin; and some there be who know him only as a fish, to be eaten without grace and with much gossip. Again, there are those who have written at great length of this and that species and sub-species, with many words and nice distinctions relative to vomerine teeth, branchiostegal rays and other anatomical differences. I would not lead you, even if your patience permitted, along the tedious path of the scientist, but will follow the middle path and note only such differences in the members of this interesting family as may be apparent to the unpracticed eye and by which the novice may distinguish between the varieties that come to his creel.
In a letter to Doctor David Starr Jordan, in September, 1889, Hon. Marshall McDonald, then U. S. Commissioner of Fish and Fisheries, wrote, "I have proposed to undertake to stock these waters with different species of Salmonidae, reserving a distinct river basin for each." Every one will commend the wisdom of the original intent as it existed in the mind of Mr. McDonald. It implied that a careful study would be made of the waters of each basin to determine the volume and character of the current, its temperature, the depth to which it froze during the sub-arctic winters, and the kinds and quantities of fish-food found in each. With this data well established, and knowing, as fish culturists have for centuries, what conditions are favorable to the most desirable kinds of trout, there was a field for experimentation and improvement probably not existing elsewhere.