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their subsistence on its animal life, and in their fight for 
survival, in short, in their very living in these waters, 
prepare them for their progeny. Itstrikes me that in this 
they but parallel the only lines mankind has found practi- 
cable in colonizing new countries. The fact that a plant 
of trout fry in a particular stream, presenting outwardly 
all the conditions necessary for a happy trout life, has 
been barren of results should not be considered as conclu- 
sive argument that trout could not live and multiply in it. 
Try that stream again with enough yearlings sufficiently 
large to war upon the enemies of baby trout. And if the 
case is urgent, and the stream is worthy, try it with a few 
two or even three-year-old veterans. Take the case of the 
Yellowstone waters as an assurance that the fish will at- 
tend to their own multiplication and save you the trouble 
of annually replanting yearlings. 
The relative values of fry and yearlings for stocking pur- 
poses will probably never bedetermined. Itis certain that 
they both have their uses and advantages. There are 
times and places where fry can and will do all that is neces- 
sary for stocking a given body of water, and there are 
places where yearlings will be required to produce the de- 
sired result. For one, I am far from denying that very 
much of the magnificent result already achieved by fish- 
culture is due to plants of fry. But, gentlemen, fry ex- 
clusively were planted when American fishculture was in 
its infancy ; now that it has reached its majority it should 
stand ready to doa man’s work of planting yearling fish 
where necessity demands, reserving its plants of fry for 
streams presenting favorable conditions of water and ani- 
mal life. In this broad country of ours, with its diversi- 
fied water systems and aquatic fauna, there are streams 
where fry planting will prove all sufficient, and others 
wherein only yearlings can succeed. 
Food and cost of 28,000 rainbow trout raised at Neosho : 
Mo., Station, from fry to yearlings, on a mixed diet of 
