The growth of the little bull-headed mites, after being turned into the river-pasture, is wonderful--more rapid than that of lambs of the Southdown breed. The keeper had marked some of them, on letting them out, by clipping the dorsal fin. On being caught six or eight months afterward, they weighed from five to seven pounds against half a pound each when sent forth to take care of themselves. The proprietors of the fisheries defray the expense of this breeding establishment, being taxed only twopence in the pound of their rental. This, of course, they get back with large interest and profit from the tenant-farmers of the river. As a proof of the enhanced production of the Tay fisheries under this cultivation the fact will suffice, that they now rent for 14,000 pounds a year against 11,000 pounds under the old system. Salmon-breeding is doubtless destined to rank with sheep-culture and cattle-culture in the future. The remotest colonies of Great Britain are moving in the matter with vigor and almost enthusiasm. Vessels have been constructed on purpose to convey this fair and mottled stock of British rivers to those of Australia and New Zealand. In France, fish-farming has become a large and lucrative occupation. I hope our own countrymen, who plume themselves on going ahead in utilitarian enterprises, will show the world what they can do in this. Surely our New England men, who claim to lead in American industries and ingenuities, will not suffer half a million acres of river-pasturage to run to waste for another half century, when it would fold and feed millions of salmon. Once they herded in the Connecticut in such multitudes that a special stipulation was inserted in the indentures of apprentices in the vicinity of the river, that they should not be obliged to eat salmon more than a certain number of times in a week. Now, if a salmon is caught between the mouth and source of the river, it is blazoned forth in the newspapers as a very extraordinary and unnatural event. There is no earthly reason why the Connecticut should not breed and supply as great a number of these excellent and beautiful fish as the Tay. Its waters are equally pure and quiet as those of the Scotch river. Every acre of the Connecticut, from the northernmost bridge that spans it in Vermont to its debouchment at Saybrook, might be made productive of as great a value as any onion-garden acre at Wethersfield.