166 SALMON-FISHEKY OF SCOTLAND. 



relative to the salmon-fishery, they had the very same view of 

 the matter. For, as before noticed, they knew that cruives 

 could not be set in the sea, nor yairs in rivers ; and hence they 

 regulated cruives in fresh water, and prohibited yairs where 

 the tide ebbs and flows, because it is the ebbing and flowing 

 of the tide, and nothing else, that enables yairs to catch fish, 

 and destroy the fry of all fishes which are not found in rivers. 

 If it be desired to preserve the fishery, all estuaries should be 

 declared rivers to a certain distance from the rivers which 

 flow into them. 



