put on his land, or what stocks on his farm.

The following brief synopsis of the best methods of cultivation will be
sufficient to insure success. The first requisite is suitable water for
hatching eggs that have been artificially fecundated, and for the
occupancy of fish of different ages, and for different species of fish.
Fish of different ages are much inclined to destroy each other for food;
and hence, in order to multiply them most rapidly, they should be kept
in separate ponds until considerably grown, when they will take care of
themselves. A spring sending forth a rivulet of clear water, and not
subject to overflow in freshets, is the best location. Clear, cool water
is essential to the trout, while some other fish will do well in warm
and even roily water. The rivulet running from the spring should be made
to form a succession of ponds, three or four in number. These ponds
should be connected with flumes made of plank. If the space they must
occupy be small, make the flumes zigzag, to increase their length. Put
across those flumes, once in four or five feet, a piece of plank half as
high as the sides of the flume, with a notch cut in the centre of the
top, that the fish may easily pass over: this will afford a succession
of little falls, in which the trout very much delights. These different
ponds are for the occupancy of fish of different ages, one age only
inhabiting one pond. The flumes should have four inches of fine and
coarse gravel in the bottom, making the most perfect spawning-ground.
Although you would not wish the female-trout to deposite her eggs in the
natural way, but will extrude them by the hand (as hereinafter
directed), yet they must have these natural conveniences, or they will
not incline to spawn at all. At the upper end of each of these flumes
separating the ponds, there should be a gate of wire-cloth, to prevent
the passage of the fish from one pond to the other; also one at the
outlet of the lower pond, to prevent egress of the fish. These must all
be so arranged that freshets will not connect them all together. When
trout are about to spawn in their natural waters, they select a gravelly
margin, and remove, from a circle of about one foot or two feet in
diameter, all the sediment, leaving only clean gravel, among which they
deposite their eggs, where they are hatched. They want running water of
three or four inches in depth for this purpose. A male and female occupy
each nest. If left