800 FISH CULTURE. 
All fishes, when spawning, are so intently engaged upon 
it, that they take very little notice of anything else. 
Trout can be captured with the greatest ease at this time, 
. —not unfrequently they can be taken with the hand. 
The following is the artificial process as described by a 
practical breeder of the brook trout. 
The trout, male and female, must be taken with a net, 
or in some manner that will not injure them, just at the 
time they are preparing to spawn, and placed in baskets 
standing in the water in some convenient place. A pan 
or pail with three or four inches of water in it is brought 
near the baskets containing the trout. AJl things being 
ready, a female trout is taken out of the basket with one 
hand, and with the other the abdomen is gently rubbed 
from the gills downward, whereupon the spawn flows in a 
continuous stream into the vessel. The rubbing is con- 
tinued until the spawn is wholly extruded, and the trout 
` is then quickly replaced in the water. This operation 
must not continue more than one minute if possible. On 
one side of the egg is a small white speck ; this is where 
the impregnation takes place. This side of the egg being 
lightest, it always falls uppermost. A male trout is now 
taken, and in like manner the milt is expressed; it falls 
through the water, and settles upon the eggs. All the 
trout in the baskets are served in the same manner. The 
spawn and milt are then placed in shallow vessels, and 
deposited in water, where they are allowed to remain an 
hour or more. (Other operators find a few minutes suf- 
ficient to insure impregnation, and at the end of that time 
rinse the eggs thoroughly. 
_ The manner of proceeding with salmon. and other 
Species is essentially the same. 
The eggs, being thus artificially impregnated, may be 
