It has been asserted by some that salmon will dwell continuously, and even breed, in fresh water, although debarred all access to the sea. "Near Kattrineberg," says Mr Lloyd, in his work on the field-sports of the north of Europe, "there is a valuable fishery for salmon, ten or twelve thousand of these fish being taken annually. These salmon are bred in a lake, and, in consequence of cataracts, cannot have access to the sea. They are small in size, and inferior in flavour. The year 1820 furnished 21,817." We confess we cannot credit this account of fresh water (sea-debarred) salmon, but suppose there must be some mistake regarding the species. Every thing that we know of the habits and history, the growth and migrations, of these fish in Britain, is opposed to its probability. Mr Young has conclusively ascertained that, at least in Scotland, not only does their growth, after the assumption of the silvery state, take place solely in the sea, but that they actually decrease in weight from the period of their entering the rivers; and Mr Scrope himself, (see pp. 27, 30,) although he quotes the passage without protest, seems of the same opinion. Besides, with their irrepressible instinctive inclination to descend the rivers during spring when young, we don't believe that the cataract in question would prevent their doing so, although it might assuredly hinder their return in summer, in which case the Kattrineberg breed would soon become extinct, even supposing that they had ever had existence. The alleged fact, however, is well worthy of more accurate observance and explicit explanation than have yet been bestowed upon it by the Scandinavian naturalists. We are informed that Mr George Dormer of Stone Mills, in the parish of Bridport, put a female salmon, which measured twenty inches, and was caught in the mill-dam, into a small well, where it remained twelve years, and at length died in the year 1842. "The well measured only five feet by two feet four inches, and there was only fifteen inches depth of water." We should have been well pleased to have been told of the size of the fish when it died, in addition to that of the prison in which it dwelt, for otherwise the fact itself is of less consequence.[13] We presume its rate of growth would be extremely slow, although we do not agree with Mr Young in the opinion already quoted, that salmon actually decrease in _dimensions_ on entering the fresh water. We doubt not they decrease in _weight_, and probably also in circumference; but their bones and organic structure are assuredly enlarged, and themselves lengthened, in such a way as to fit their general form for a rapidly increased development, so soon as they again rejoice in the fattening influences of the salubrious sea.