Edinburgh New Philosophical Journal (1837 Edinburgh New Philosophical Journal edinburghnewphil24edin Year: 1837 - 1838 Mr Shaw's Experiments on the Fry of the Salmon. 171 of INIarch (54 days after impregnation) the embryo fish was visible to the naked eye. On the 7th of May (101 days after impregnation) the little fish had burst the shell, and were to be found amongst the shingle of the stream. The temperature of the water was at the time 4S°, and of the atmosphere 45°. Fig. 1* is an accurate representation of Fig. l. the young fish ten days old, taken from the pond on the 16th of May. A con-
Edinburgh New Philosophical Journal (1837 Edinburgh New Philosophical Journal edinburghnewphil24edin Year: 1837 - 1838 Mr Shaw's Experiments on the Fry of the Salmon. 171 of INIarch (54 days after impregnation) the embryo fish was visible to the naked eye. On the 7th of May (101 days after impregnation) the little fish had burst the shell, and were to be found amongst the shingle of the stream. The temperature of the water was at the time 4S°, and of the atmosphere 45°. Fig. 1* is an accurate representation of Fig. l. the young fish ten days old, taken from the pond on the 16th of May. A con- siderable portion of the ovum is still attached to the abdomen. Fig. 2. is -^^S- ^' a specimen, forty-eight days old, taken from the pond on the 24th of June. Its symmetry is yet imperfectly deve- pj-^ 3^ loped. Fig. 3. represents the fish of two months' old, taken from the pond on the 7th of July. Its shape is now materially improved, and it presents in miniature the propor- tions of a mature fish. Fig. 4. is a specimen at the age of four • Fig. 4. months, taken from the pond on the 7th of September. The characteristic marks of the parr are now distinctly visible. The fish has attained a fine symmetry, and the features of the pa- rents may almost be discovered in their child. Fig. 5. is a Fiff. 5.
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