A series of well-conducted operations in fish-culture has been carried on for about twelve years on the river Tay about five miles from Perth; and as these have attracted a great amount of attention, they merit a somewhat lengthened description. The breeding-ponds at Stormontfield are beautifully situated on a sloping haugh on the banks of the Tay, and are sheltered at the back by a plantation of trees. The ground has been laid out to the best advantage, and the whole of the ponds, water-runs, etc., have been planned and constructed by Mr. Peter Burn, C.E., and they have answered the purpose for which they were designed admirably. The supply of water is obtained from a rapid mill-stream, which runs in a line with the river Tay, as is shown by a small plan on the next page. The necessary quantity of water is first run from this stream into a reservoir, from which it is filtered through pipes into a little watercourse at the head of the range of boxes from whence it is laid on. These boxes are fixed on a gentle declivity, half-way between the mill-race and the Tay, and by means of the slope the water falls beautifully from one to another of the three hundred “procreant cradles” in a gradual but constant stream, and collects at the bottom of the range of boxes in a kind of dam, and thence runs into a small lake or depôt where the young fish are kept. Until lately only one such pond was to be found at Stormontfield, but another pond for the smolts has now been added in order to complete the suite. A sluice made of fine wire-grating admits of the superfluous water being run off into the Tay, so that an equable supply is invariably kept up. It also serves for an outlet to the fish when it is deemed expedient to send them out to try their fortune in the greater deep near at hand, and for which their pond experience has been a mode of preparation. The planning of the boxes, ponds, sluices, etc., has been accomplished with great ingenuity; and one can only regret that the whole apparatus is not three times the size, so that the Tay proprietors might breed annually a million of salmon, which would add largely to the productiveness of that river, and of course aid in increasing the rental. [Illustration: ORIGINAL BREEDING-POND AT STORMONTFIELD. A. Mill-race. B. Filtering-pond. C. Hatching-boxes. D. Rearing-pond. E. Upper canal. F. Lower canal. G. Connecting stream of C and D. H. By-run to river. K. Pipe from mill-race to pond. L. Pipe to empty pond. M. Pipe from mill-race to filtering-pond. _n n_. Discharge-pipes from do. O. Do. do. to lower canal. P. Sluices from pond. R. Marking-box. S. Keeper’s house. T V. Sluices from lower canal. ] For the purpose of showing the level of the pond at Stormontfield I beg to introduce what the French people call “a profile.”