56 BULLETIN OF THE UNITED STATES FISH COMMISSION. 
said to be found there. On beginning fishing he immediately landed a 
17-inch fish that proved to be a rainbow trout, sometimes known as the 
California red-sided trout. Soon afterwards another of the same species 
was taken, weighing a little over 4J pounds when dressed. In a study 
of the stream for about a mile I saw over 100 trout, ranging from 12 to 
18 inches in length, and about 30 of the larger size were taken. At the 
head of the river, which is an immense spring, and within 100 yards 
below, I saw many thousands of the last hatching, which were 4 or 5 
inches long. 
Thirty or forty were caught during this last summer a mile or so be. 
low the head of the river, where the water gets as warm in summer as 
it does in any of these streams, which shows that these fish will thrive 
all over this section of Missouri. These trout are the remnants and 
progeny of 1,500 fry planted June 10, 1882, and their growth is extraor- 
dinary. Even if they had been planted one or two years before, the 
growth is surprising, and shows that with a little care and expense all 
these streams can be made alive with a remarkably fine game fish, 
which is also an excellent and delicate table fish. 
It is, moreover, more hardy than is generally supposed. I have 
planted it in the shallow creeks of the Wyoming plains, where the 
water gets so warm and is always so alkaline that scarcely anything 
but the hardy cyprinoids can live, and the rainbow trout has done well 
in them. 
Cheyenne, Wyo,, March 29, 1887. 
16.-SALMON NOT INJURED BY CATFISH. 
By HORACE 3>. DUWJV. 
Word has gone out that catfish have been taken in Suisun Bay whose 
stomachs were full of young fish and salmon spawn. Upon this state- 
ment a cry has been made that the catfish were destroying both spawn 
and young salmon. The facts of the case are that the catfish were 
caught in the vicinity of a salmon cannery, and that the spawn was 
among the fish- offal thrown into the bay; and the young fish were 
“split-tails” and not valuable for food purposes. No salmon cast their 
spawn naturally within 250 miles of where the catfish were taken, and 
no young salmon are to be found in that vicinity but of such size and 
vigor that the catfish could neither catch nor swallow them. All the 
smolts or parr caught in the waters of San Francisco Bay, so far as I 
have known, have been over six inches long, and if they could escape 
the “hard -mouths,” or pike and sturgeon, in passing down a river for 
250 miles, a sluggish catfish would not be apt to catch them. 
San Francisco, Cal., June 8, 1887. 
