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Show 250 DR. .1. MURIE ON T H E [Mar. 26, consequence. A net was then put over the tank to prevent loss of life. The same phenomena as regards alteration in colour, and restless disposition at the annual migratory period, occurred the year following (1866). It was further observed that those which had assumed the silvery dress in the beginning of the year again lost it in the autumn, and became distinctly Parr-marked. During the latter part of 1866 a good many specimens died-some of those that had assumed the smolt dress, and also others that had not changed. In 1867 the few that remained exhibited change of dress, restlessness, and leaping-propensity in the spring, as they had done in previous years. As to their growth, this can only be spoken of approximately ; for no exact measurements, were taken of those that died previously to the specimen which I exhibit to the Meeting. During the first and second years the young fish seemed to grow, and did attain a size corresponding to the young of Salmon-that is, from 3 to 6 inches lon<r. It may be observed, however, that at the last period spoken of they particularly varied in size ; in other words, some seemed to grow more rapidly or be longer than others, from the same batch of ova. During the third and fourth years they appeared all to have grown somewhat larger ; but the accession of growth was very limited compared with what had taken place the two previous years. They still varied in size, attaining, it might be, 5, 6, and 7 inches respectively. Only two, as previously mentioned, have lived to their fifth year; these I shall presently describe, but premise this much of them- that, according to Tennent and Mr. Bartlett, they have grown little, if at all, during this last year. The words of these gentlemen are, " they have not perceptibly grown during that period." M y inquiries as to feeding have been thus answered:-When quite young they received the yolk of egg boiled hard and broken up into small fragments; as they grew older, but in their first year, Daphne aculeata and suchlike water-insects, with the common bloodworm were consumed by them in quantities; raw flesh chopped up was also occasionally given them. In the succeeding years, worms, chopped meat, fish-spawn, and the fry of minute fish have been added. They have always had abundance of fresh food, which at times has been given to them as often as from twelve to twenty times daily. Description.-Having thus dwelt at considerable length on the history of our Salmon-culture in the Society's Gardens, I shall proceed to describe in detail two of the said young Rhine Salmon. That which I may for convenience' sake call No. 1 (Plate XXIII. fig. 1)1 now exhibit, preserved in spirits; the other, No. 2 (Plate XXIII. fig. 2), is at present alive and well in the tank in the Society's Fish-house. Both these were among the brood reared in |