. American fish-culture [microform] : embracing all the details of artificial breeding and rearing of trout, the culture of salmon, shad and other fishes. Fish culture; Fishes; Oyster-culture; Pisciculture; Poissons; Ostréiculture. r. I 30 FISH CULTURE. certain flow for hatching, and perhaps a cold brook which he can also use in supplying his ponds. He will therefore wish to know the size his ponds should be, and the best form. Before I give any directions on incubation and its appliances I will treat of ponds, remarking by the way, that if one uses brook water to increase his supply, he shoul
. American fish-culture [microform] : embracing all the details of artificial breeding and rearing of trout, the culture of salmon, shad and other fishes. Fish culture; Fishes; Oyster-culture; Pisciculture; Poissons; Ostréiculture. r. I 30 FISH CULTURE. certain flow for hatching, and perhaps a cold brook which he can also use in supplying his ponds. He will therefore wish to know the size his ponds should be, and the best form. Before I give any directions on incubation and its appliances I will treat of ponds, remarking by the way, that if one uses brook water to increase his supply, he should not introduce it, if avoidable, into his first pond where the small fry are kept, and should make some con- trivance for shutting off the brook or confining it to its usual volume in time of heavy rains. He should do this, not only that he may keep the water in the ^rst pond at its usual temperature, but also to prevent dirt from being washed in, which will soon foul the bottom with mud. The plan usually pursued with those who raise trout as a " crop," is to have a series of ponds connected by race- ways, the latter being used as spawning-grounds for the fish. At least three ponds are required. The first for the young fish from the time they are taken from the hatching- trough or nursery, until they attain the age of eighteen or twenty months. The second pond for the same brood for the next twelve months, at the end of which time they will be thirty or thirty-two months old. The third pond for the same fish from the age last mentioned, until they are three years and a half old. From the last pond it is supposed they are to be taken for sale or the proprietor's table. It will be observed, that when the last pond is vacated the trout from the second pond will occupy it, that the second will be occupied by the fish from the first, and the first pond by the new brood from the Please note that these images are extracted from scanned page images that may have b
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectfishes, bookyear1868
