It may be of some use, particularly to those who are interested in pisciculture, to note a few details connected with the capturing of the gravid fish and the plan of exuding the ova practised at Tongueland. The river Dee is tolerably well stocked with fish, as may be surmised from the rent I have named as being paid for the right of fishing. Mr. Gillone adopts the plan, now also in use at Stormontfield, of capturing his fish in good time—in fact, as a general rule, before the eggs are ripe—and of confining them in his mill-race till they are thoroughly ready for manipulation. Last season—_i.e._ in November and December 1864, and January 1865—as many as thirty-six female fish were taken for their roe, the number of milters being twenty-five, the total weight of the lot being 454 lbs., or, on the average, six and a half pounds each fish. According to rule, the weight of the female fish taken having been 283 lbs., these ought to have yielded 283,000 eggs, but as several of the fish were about ripe at the time they were caught, they spawned naturally in the mill-race, where the eggs in due time came to life. The plan of spawning pursued at Tongueland is as follows:—Whenever the fish are supposed to be ripe for that process, the water is shut out of the dam, and the animal is first placed in a box filled with water in order to its examination; if ready to be operated upon, it is then transferred to a trough filled with water about three feet and a half long, seven inches in breadth, and of corresponding depth, and the roe or milt is pressed out of the fish just in the position in which it swims. As soon as the eggs are secured, a portion of the water is poured out of the wooden vessel, and the male fish is then similarly treated. The milt and roe are mixed by hand stirring, and the eggs then being washed are distributed into the boxes. Mr. Gillone carries on all his operations with the greatest possible precision. He has a large clear glass bottle marked off in divisions, each of which contains 800 eggs, and he numbers the divisions allotted to each particular fish, which are sown into a similarly numbered division in his box, so that by referring to his index-book he can trace out any peculiarity in the eggs, etc.