IMPREGNATION OF EGGS IN TROUT BREEDING. 601 
lie six eggs, just laid and left in an evil moment by the 
parent. While we are thinking of the bereaved niother 
Kurilla’s thoughts tend toward omelets, and the frying pan 
and a piece of deer-fat are soon produced. Duck roasted on 
4 stick before the fire, is quite another thing from the em- 
balmed remains which the hotels offer us, by way of game, 
and to our mind it is far superior. Our meal of duck, ome- 
let, tea and bread being finished, we seat ourselves in the 
boat, east off the lashings, and shoot out into the rapid cur- 
rent, leaving the mosquitoes, for a time at least, behind us; 
when, an hour afterwards we haul up on the beach at Nuláto 
and survey our trophies, some of us may conclude that pleas- 
ure as well as profit may be found, even in the wilderness 
which borders on the Yukon. 
THE IMPREGNATION OF EGGS IN TROUT 
BREEDING. 
BY A. S. COLLINS. 
Four or five years ago the subject of this article would 
have been considered of little practical importance. Now, 
however, fish-breeding establishments in our country can be 
counted by the hundred ; and every detail of the business is 
receiving close attention. I propose briefly to describe the 
method in which trout naturally impregnate their eggs, and 
then the various methods or modifications adopted by fish- 
breeders. 
Natural Method of Spawning. Some time about the 
month of October (the time varying with the temperature 
of the water), the trout which have hitherto been scattered 
through the stream, begin to run up toward its sources. The 
place which they choose for a nest has always certain char- 
acteristics. It is chosen as near a spring head as possible, 
AMER. NATURALIST, VOL. IV. 76 
