32 THE ACCLIMATISATION 



ten years single-handed at a problem in 

 acclimatisation which both scientific and 

 practical men had often declared to be 

 insoluble. 



The treatment of the young fish was 

 essentially the same as that adopted in the 

 establishments in Scotland, and aU local 

 enemies were watched for and destroyed. 

 Knowing the rapacity of trout, Mr. Youl 

 had advised that they should not be placed 

 in the same river as the salmon, because, 

 assuming that the latter went away to the 

 sea and returned to breed, there would be 

 numbers of well-grown trout in the fresh 

 waters ready to attack the young salmon 

 fry. By some neglect, however, the trout 

 did escape into the Derwent, and they have 

 probably done much damage, for many of 

 them had grown into large fish in a couple 

 of years, and one which was taken four 

 years only after importation scaled 9|; lbs. ! 

 and the river now contains thousands of 

 heavy trout, much to the delight of the 

 Tasmanian fly fisher. The health of the 

 growing parr was excellent, and they were 



