The natural historian is not a fisherman, who prays for cloudy days and good luck merely, but as fishing has been styled "a contemplative man's recreation," introducing him profitably to woods and water, so the fruit of the naturalist's observations is not in new genera or species, but in new contemplations still, and science is only a more contemplative man's recreation. The seeds of the life of fishes are everywhere disseminated, whether the winds waft them, or the waters float them, or the deep earth holds them; wherever a pond is dug, straightway it is stocked with this vivacious race. They have a lease of nature, and it is not yet out. The Chinese are bribed to carry their ova from province to province in jars or in hollow reeds, or the water-birds to transport them to the mountain tarns and interior lakes. There are fishes wherever there is a fluid medium, and even in clouds and in melted metals we detect their semblance. Think how in winter you can sink a line down straight in a pasture through snow and through ice, and pull up a bright, slippery, dumb, subterranean silver or golden fish! It is curious, also, to reflect how they make one family, from the largest to the smallest. The least minnow that lies on the ice as bait for pickerel, looks like a huge sea-fish cast up on the shore. In the waters of this town there are about a dozen distinct species, though the inexperienced would expect many more.

It enhances our sense of the grand security and serenity of nature, to observe the still undisturbed economy and content of the fishes of this century, their happiness a regular fruit of the summer. The Fresh-Water Sun-Fish, Bream, or Ruff, _Pomotis vulgaris_, as it were, without ancestry, without posterity, still represents the Fresh-Water Sun-Fish in nature. It is the most common of all, and seen on every urchin's string; a simple and inoffensive fish, whose nests are visible all along the shore, hollowed in the sand, over which it is steadily poised through the summer hours on waving fin. Sometimes there are twenty or thirty nests in the space of a few rods, two feet wide by half a foot in depth, and made with no little labor, the weeds being removed, and the sand shoved up on the sides, like a bowl. Here it may be seen early in summer assiduously brooding, and driving away minnows and larger fishes, even its own species, which would disturb its ova, pursuing them a few feet, and circling round swiftly to its nest again: the minnows, like young sharks, instantly entering the empty nests, meanwhile, and swallowing the spawn, which is attached to the weeds and to the bottom, on the sunny side. The spawn is exposed to so many dangers, that a very small proportion can ever become fishes, for beside being the constant prey of birds and fishes, a great many nests are made so near the shore, in shallow water, that they are left dry in a few days, as the river goes down. These and the lamprey's are the only fishes' nests that I have observed, though the ova of some species may be seen floating on the surface. The breams are so careful of their charge that you may stand close by in the water and examine them at your leisure.