5 fe) 
small ones. Eggs both tresh and eyed are so easily and 
safely transported that distance from the spawning streams 
is of far less consequence than proximity to a first-class 
railway station, from which the distribution of the fry can 
be readily effected. 
The extreme importance of properly constructed and 
efficiently controlled Hatcheries must be my excuse for 
having dwelt so long on this portion in the paper, especially 
as a very prevalent and to many a very pleasant idea is that 
every watershed in the country should teem with small 
Hatching-houses, and that the water should be stocked with 
the improperly developed eccentricities so freely produced 
by dirt, ignorance, and overcrowding. 
APPARATUS. 
The apparatus employed in hatching Salmonide must 
necessarily vary with the species, temperature of water in 
hatching, and the character of the waters it is proposed to 
stock. The principal object is not to incubate the largest 
number of eggs in a given space, but to so incubate the ova 
that at some future period—for instance, twelve months 
after laying down the ova—the largest number of healthy 
fish may result; and I say this advisedly, for it is quite 
possible to hatch a very large percentage of the ova,and yet 
a very small percentage of the fry survive the first few weeks 
after they commence feeding. With a low temperature, 
and where the ova have to be sent away either as eyed ova, 
or the fry to be turned out before the conclusion of the yolk 
sac period, a very much larger number of Salmon and Trout 
eggs can be incubated per gallon of water per minute with- 
out any apparent loss than is possible in this country with 
a high temperature of water and with fry under constant 
observation for months after they commence feeding. 
