SALMON 37 



that the Parr and the Salmon are of the same species, 

 and that the question is so far set at rest for ever. 



To sum up it appears that the young fry had 

 burst the egg 101 days after impregnation, the 

 temperature of the water being at that time 43, 

 and the temperature of the atmosphere 45 : a 

 former brood, which died and were excluded in a 

 colder temperature, did not come into life till 114 

 days after impregnation. 



It further appears from a part of Mr. Shaw's 

 publication, which I have not hitherto quoted, but 

 which I have now before me, that the fry, at two 

 months old, are only one inch and a quarter long ; 

 at four months, two inches and a half ; and at six 

 months, three inches and a quarter : that makes 

 nine months and eight days after the impregnation 

 of the spawn. At eighteen months old the fry 

 measure six inches in length, and the milt of the 

 male is matured, and can be made to flow from the 

 body freely by the slightest pressure ; but the 

 females of a similar age do not exhibit a correspond- 

 ing appearance as to the maturity of the roe. The 

 male is at this time in the autumn of his second 

 year, and lies about and in the spawning beds of the 

 large Salmon, where he impregnates the ova. The 

 following spring he is about seven inches and a half 

 long, when beautiful silver scales grow over the 

 spots and bars which have characterised him up to 

 this period ; and the majority of the breed then 

 congregate, and go to sea with the first floods in 

 May. 



In the latter end of April, 1842, Mr. Shaw oblig- 



