This substance is perpetually brought up by the trawl net, very injuriously, as it relates to fisheries; and in many cases, the fishermen contrive to guess tolerably well to what fish it belongs. That it may be transported to any distance, the familiar practice of China proves: since it is there a common article of sale in the markets; while there also, I may incidentally remark, the cultivation of fish for sale, their transportation to market, and their replacement in the ponds, if unsold, is as much matter of ordinary farming as the management of a poultry-yard; while the pond is often the most profitable part of the farm. They also, who do not already chance to know it, may be informed, that this species of poultry-yard, or fish-pond, is as easily and regularly [p328] stocked in this manner, and managed, as any other portion of the farm: since it is even destroyed, or suffered to become dry occasionally, and again renewed in the wet season, by the means of purchased spawn, or stock; just as a sheep farmer buys lambs to stock his mountains. If England is too wise to learn of Rome or China, or of France and Germany, or even of the experiments on which I have dwelt so much and so often, it must be a pleasing reflection that it is already so amply informed as to have passed the bounds of all possible improvement and all possible wishes. But that I may terminate this particular suggestion, I will only further point out, that lobsters, and the crab tribe generally, might very easily be transported in this manner, and that, in them, it is easily known when the _ovum_ has been impregnated, by means of a black spot with which it is then marked. If I ought to apologize already for the length of this communication, I shall conclude it by saying, that whatever may be judged of the general philosophy of this subject, there is not and never has been any thing to prevent the cultivation of fish, in ponds of salt-water at least, or the preservation of them in any water in which they will live for a sufficient length of time, so as to render that a depôt for the purposes of a fish store, calculated for the steady supply of a market, in the manner which I formerly described and proposed. If, after so many years as this proposal has been made, London has not seen either the facility, or the utility, it will discover them at some future day; just as it discovered, ten years after there had been twenty-six steam-boats on the Clyde, that a steam-boat might possibly be of use on the Thames; just as it opposed gas-lights, and just as it has adopted gas-lights. [p329] _Nugæ Chirurgicæ; or, a Biographical Miscellany, illustrative of a Collection of Professional Portraits_. By W. Wadd, Esq., F.L.S. &c. 8vo. pp. 276. London, 1824 Longman and Co., and Callow and Wilson. _Nugæ Canoræ; or Epitaphian Mementos (in Stone-cutter’s Verse) of the Medici Family of Modern Times_. By Unus Quorum. London, 1827. Callow and Wilson.