76 SALMONIDiE. 



considers to be a sufficiently obvious proof that the Parr is not 

 the young of the Salmon, or indeed of any other of the larger 

 Salmonida. 



The reason is of course annihilated by the proved fact, that 

 the Pinks, which remain in fresh water all the first year, are 

 young Salmon, Parr-marked; whereas the young Salmon-fry, 

 Smalts, formerly supposed to be the young fish of that year, all 

 of which have gone down the river to the sea, are in truth the 

 fish of the preceding year. 



Similarly is the question settled with regard to the existence 

 of Parrs in streams of the Western Isles which are never visited 

 by Salmon, these being, in all probability, the Brook Trout in 

 the Parr stage of its existence. 



And so again the fact that there are lakes in the same islands 

 frequented by the Salmon and Sea Trout, in which Parrs are 

 never found — because the young fry, while in the Parr, or 

 transversely-banded form, keep in the swift cold streams, and 

 do not descend to the lakes. 



It now appears to be certain, or as nearly certain as any- 

 thing can be, which is not positively proved, that every species 

 of the Salmonida is at one period a banded-fish or Parr. 



This is known as an authenticated fact of the Salmon, Salmon 

 Trout, Bull Trout, and common English Trout, as well as of the 

 Welsh Charr, as admitted bj^ Yarrel. 



Mr. Agassiz has figured the Hucho [Salmo Hucho), and the 

 Continental Charr, which he esteems identical with the Northern 

 Charr of England [Salmo Umbla), in the same stage — the other 

 characteristics of the difi'erent fish being unmistakable and 

 evident — with the transverse bars. The same distinguished 



