Up to the season of 1863- '4 more than 110,000,000 eggs had been distributed, of which 41,000,000 were those of salmon and trout.With the cession of Alsace and Lorraine, this establishment passed into the hands of the Germans, and is now conducted on a still larger scale under the auspices of the German fishery association; and success has attended the efforts to restock the Rhine and other streams. In its stead the French government have established another at Mont-beliard, in addition to those already in operation at Clermont-Ferrand and elsewhere. Prof. Vouga has been employed for several years at Chanelaz near Neufchatel, Switzerland, by the government of that canton, in the artificial propagation of trout, for the purpose of stocking the lake of that name and the streams flowing into it. He has recently succeeded in obtaining hybrids of the lake trout and the ombre chevalier, and in the autumn of 1873 established a course of instruction in theoretical and practical pisciculture. The trout ponds of Heidelberg are famous; and the establishment of M. de Galbert on the Isere, at La Buisse, France, consisting of a hatching house and a series of ponds, is worthy of mention.-The salmonbreeding establishment at Stormontfield, Scotland, is situated on the Tay, about 5 m. above Perth, and has been in operation about 20 years.

The ponds occupy grounds sloping gently toward the river, and bounded at the top by the Stormontfield mill lade, the intervening distance being about 500 ft. The water from the lade is discharged into a bed of gravel, through which it flows into the channel which supplies the hatching boxes, which are 300 in number, and lie in 25 parallel rows of 12 each, at right angles to the lade. The boxes are 6 ft. long, 18 in. wide, and 12 in. deep, and are filled to within 2 in. of the surface of the water, first with fine, then with coarser gravel; above this is a layer of stones of considerable size, among which the impregnated ova are placed, about 1,000 in a box. The boxes are connected with the two feeding ponds, the one a quarter of an acre and the other an acre in extent, which are again connected with the river. The result of the operations at Stormontfield has been a large increase in the numbers of salmon taken in the Tay, and in the rental of its fisheries. There is also an establishment at Tongueland on the Dee, where the hatching boxes are protected from the weather, occupying a room TO ft. long in a lumber storehouse connected with a bakery.-Several successful attempts at fish culture have been made in Ireland, notably by Mr. Ashworth on the Galway, and by Mr. Cooper on tributaries of the Ballisodare, those rivers having been stocked with salmon, and stairways having been built to enable the fish to ascend falls before impassable.

Salmon have also been introduced into the Doohulla river, so called, which consists of several small lakes, originally connected with the sea by a tortuous brook, impassable by fish unless swollen by heavy rains, when white trout occasionally ascended. The upper lakes have been connected with the lower one by an artificial cut, and this by another artificial channel with the sea, so that the waters are accessible to salmon.-The most noteworthy Norwegian experiment is that of Prof. Rasch of the university of Christiania. The locality is a deep fiord, which runs up into the land about a mile, narrowing at the end to the width of a large trench, and opening out beyond into a basin about 300 acres in extent, with an average depth of 40 ft. Across the inlet Prof. Rasch in 1869 erected a fence which does not prevent the ebb and flow of the tide, but bars the outward passage of the fish. Within the enclosure a hatching apparatus for salmon and sea trout spawn was set up, connecting with two small fresh-water ponds, supplied by a spring. The young fish are fed for a time in the ponds on fine-chopped mussels, which are found in the basin in abundance, and are then turned into the salt-water basin. This experiment has shown that sea trout may be reared without access to the sea.

Prof. Rasch has also succeeded in producing a hybrid of the salmon and the fresh-water trout, which, being unfruitful, attains a large size, and is in fine condition when the pure species are out of season. In Russia the sterlet has been propagated with complete success, the fish emerging from the egg in seven days after fecundation.-The Canadian government for some years have had a fish-breeding establish-ment at Newcastle, Ontario, which is under the charge of Samuel Wilmot, and is chiefly occupied in breeding salmon, whitetish, and salmon trout. It formerly sold many salmon eggs in the United States. In December, 1872, there were 350,000 salmon eggs and nearly 1,000,-000 whitefish eggs in process of incubation. In this establishment neither gravel nor filtering boxes are used. The water is brought from the river or creek into a tank in the building, whence it is carried by 3/4 in. taps into a series of troughs, 12 ft. long, 10 in. wide inside, and 5 in. deep, placed 2 ft. above the floor. Trays made of 5/8 in. pine board, 2 ft. long by 9 1/2 in. wide, with perforated zinc bottoms, are suspended three fourths of an inch from the bottom of the troughs, with about 2 in. of water above them.

These trays, upon which the eggs are placed, are easily cleaned, and are convenient for the transportation of spawn. In 1872 another establishment was commenced on the Restigouche river, about 9 m. above the mouth of the Matapediac; and in 1873 two others were built: one on the Miramichi river in New Brunswick, about 5 m. above Newcastle; the other on the Dartmouth river at Gaspe. All three are under the direction of Mr. Wilmot. From the establishment at Newcastle thousands of salmon fry have been annually planted in many streams emptying into Lake Ontario from which salmon had disappeared. They are now found returning in large numbers, and during the past few seasons hundreds have been discovered in the act of laying their eggs.-The first recorded experiment in the artificial propagation of fish in the United States was made in South Carolina in 1804. In 1853 Dr. Theodatus Garlick and Prof.