1-10 Introduction of Salmon from the 



There is, however, another and a fatal objection to this plan, 

 namely, that the spawn must be placed in a running stream 

 of fresh water ; if placed in stagnant water, it dies : there 

 Avonld, therefore, be no chance of its proving productive 

 upon arrival here, were it conveyed out even within 90 days. 



It will be seen by Mr. Young's letter appended, that he 

 considers it practicable to bring out the fish alive by securing 

 them in the state of Smolt descending to the sea, and placing 

 them in a large tank filled with sea water, which might be 

 made to pass gently but steadily through it, and so be 

 changed every day. The Salmon would thus be kept only 

 some two or three months longer in the salt water than they 

 would otherwise naturally be. On arrival here they might 

 be turned into the Derwent, somewhere about Bridgewater ; 

 or at any place where they w^ould meet the fresh water, so as 

 to induce them to ascend the river. 



Once in the river, there would, I think, be every chance 

 of the experiment proving successful. The enemies they 

 would have to contend with would not be so numerous here 

 as at home ; their greatest and most destructive enemy there 

 being the Trout, which devours immense quantities of the 

 small fry of the Salmon. 



In the upper part of the Derwent there would be no fish 

 to prey upon them, and in the sea they would find no more 

 than at home. The main obstacle to this plan is the motion 

 of the vessel, from w^hicli injury might be apprehended to 

 the fish : but this might be corrected, perhaps, by having 

 the tanks hung like a cabin lamp, so as always to preserve 

 their perpendicularity, or nearly. It is certainly very desir- 

 able that no expedient should be left untried which ofi'ers a 

 fair chance of accompHshing an object so desirable as that of 

 ;the introduction into the many fine rivers of this beautiful 

 and fertile country, of a fish so valuable as is the Salmon of our 

 native land : and I am glad to have it in my poAver to add, that 



