valuable, to our cold waters, but the experiment is, I believe, being tried in France. The bass of Lake Wennern may also be mentioned as a suitable fish for British waters, as well as the ombre chevalier of the Lake of Geneva, a few of which latter are now, I believe, along with some other varieties, being tried in the river Thames. So great is the increasing interest of pisciculture becoming, that new ideas are being daily thrown out regarding it. A few months ago a writer in the _Times_ suggested the introduction of a white fish from the Canadian lakes to our fresh waters:—“This fish (_Coregonus albus_), of the salmon family, is from three to four pounds weight, as delicious as a Dublin Bay haddock when fresh, and when barrelled considered a luxury in the Central and Southern States of America and the West Indies, bringing 50 per cent over the price of barrelled trout. Different from our fresh-water fish, it is a vegetarian, living on weeds and moss. It is a great article of food in the North-Western States of America and Canada, the exports of it being $464,479 in 1861 from the states on the lakes; but I have no return from Canada, which may be about one-half more, making a total of over $700,000, or £140,000 a year.” The latest achievement in pisciculture has been the introduction to this part of Europe of “the Wels” (_Silurus glanis_), an interesting account of which lately appeared in the _Field_ newspaper. Great expectations have been formed that this gigantic fish may be successfully reared in England. It is, I believe, the largest European fresh-water fish, commonly attaining a weight of from fifty to eighty pounds, and individuals have been found of the extraordinary size of four cwts.! Dr. Gunther, the eminent ichthyologist, remarks that this is the only foreign fish which it would be worth while to introduce into this country; and thinks that, in several of our lakes, particularly those in peat soil, it might be usefully placed. [Illustration: SILURUS GLANIS.]