KKSTOCKINCJ Kivi:i;>. 85 



they become Sni;ilt>, .^liuiiUl not rfturii asdrilsr to the .sei'iics of 

 their ehiUlhoud. 



Kor do I see any i^ooil reasuii w liy thry should not coulinue 

 to l)rieil, and to iVtiiumt any ri\er into whieh they .sliouUl be 

 ho intrmlucrd. 



The eanse ot' thiir desertion ot" tliest' ii\irs is inexplicable. 

 It has been attributed to steandjoiUs, Ijut that is ideal ; for tin* 

 Tay, the Tweed, and tlu- Clyde, and half a dozen other Kn^'lish 

 ttud Scottish rivers, whieh still aljonntl in Salmon, are harassed 

 by more steand)oats, hourly, than are the Kcnnebcck and 

 Penobscot now, or than were the Hudson and Connecticut at 

 the time when the Sadmon forsook them, daily. 



I think it, myself, far more probable that they were poisoned, 

 and driven fixjiu the headwaters and tributaries, in which they 

 Mere wont to spawn, by the sawdust, especially the hendock ; 

 and that the stock which were used to run up these estuaries 

 having become extinct, the traditional instinct is lost, and there 

 arc no fish left whicli know the way to our waters. 



If this be a true reason — and, the known instinct of the 

 animal considered, it is as plausible a conjecture as any other — 

 it is certain that many rivers, whose waters a few years a-jo ran 

 turbid with sawdust, and whose every tributary resounded to 

 the clack of the saw -mill, now agaun run as limpid ns ever, and 

 are guiltless of saws, jis well as of the tindier to supply them. 



I contciul, therefore, that there is no analogy against, but 

 much in favour of, the jMissibility of rc-stocking the southern 

 rivers of the Middle States with Siduuju, which should return, 

 and breed in thcui, year after year. 



Nor, looki.ig to the \iu»l profit directly arising from such 



