SALMON. I.! 



observed to be deposited near the sources of the stream on 

 the 2nd of November, and covered up with gravel in the 

 usual way." 



" February 25, or a hundred and sixteen days after 

 being deposited, the ova, on being dug up, are found to be 

 unchanged. If removed at this time, and preserved in 

 bottles filled with water, the developement of the egg may 

 be hastened almost immediately by being put into warm 

 rooms : it is not necessary to change the water. The fry so 

 hatched, i. e. artificially, cannot be preserved alive in bottles 

 longer than ten days ; they eat nothing during their con- 

 finement." 



" March 23. The ova now changing ; the outer shell 

 cast ; the fry are lying imbedded in the gravel, as fishes 

 somewhat less than an inch in length, being now twenty 

 weeks from the period of their deposition." 



" April 1 . On reopening the spawning-bed, most of 

 the fry had quitted it by ascending through the gravel. 

 During a former series of observations I have found the 

 ova imbedded in the gravel unchanged on the 10th of 

 April, and as fry or fishes, but still imbedded in the gravel, 

 on the 17th : they were taken that year, with fly, as Smolts, 

 on the 22nd of April, about the size of the little finger." 



Some specimens of Salmon fry now before me, with a. 

 portion of the ovum still attached to the abdomen of each 

 fish, measure one inch in length : the head and eyes are 

 large ; the colour of the body pale brown, with nine or 

 ten dusky grey marks across the sides. These dusky 

 patches, longer vertically than wide, are common, I have 

 reason to believe, to the young of all the species of the 

 genus Salmo. I have seen them in the young of the 

 Salmon, Grey Trout, Sea Trout, Common Trout, and Charr. 

 In a specimen of the young of the Salmon six inches long, 

 these transverse marks are still observable when the fish is 



