87 
ous, that we cannot totally eradicate them. Gentlemen, 
you will find itan enormous task to rear enough fry to 
counteract the destruction caused by natural enemies, and 
especially so unless all your plants are made under the 
best conditions, with the greatest care. You will find also 
that the cost of distribution when your fry are thus planted 
to the best advantage will commence to approximate the 
cost of distributing yearlings. Stocking a stream with 
yearling fish requires every degree of careful forethought ; 
but stocking a stream with fry demands an intimate knowl- 
edge of the stream and its inhabitants, a more careful and 
wider distribution of the plant, and in many cases an ac- 
companying or prior deposit of natural food adapted to 
infant trout diet. 
In the Transactions of the Twenty-first Meeting of this 
Society, on page 113, occurs the following quotation: ‘‘I 
have seen it stated that in some of the streams of the Yel- 
lowstone, or West, several attempts were made to plant with 
fry, which failed, and other attempts made with yearlings 
succeeded. Now, the question naturally arises, suppose 
those yearlings do succeed and spawn there, what is to be- 
. come of their fry when they are hatched? * * * It 
strikesme * * * if the fry cannot live in those streams, 
and nothing but yearling can, you have got to put in year- 
lings there every year.’’ The foregoing remarks, no doubt, 
had reference to the plants of yearling trout made in the 
waters of the Yellowstone National Park by the United 
States Fish Commission in the autumns of 1889 and 1890, 
a concise history of which can be found in the Report of 
the United States Commissioner of Fish and Fisheries on 
the Explorations in Montana and Wyoming in the Summer 
of 1891 (Senate Mis. Doc. No. 65, pages 51, 52 and 53). I 
do not know the authority for saying these streams had 
hitherto been unsuccessfully tried with fry—though pos- 
sibly they had. But I have the very best authority for 
saying that in at least one of these streams most unfavor- 
