

rations made on tlie Parr of the Tweed, further addi^, 

 " that the differcnec of opinion anionq- ichthyologists, or 

 mther tlie difficulty whicli they appear to have in forming 

 one, whether this fish is distinct, or only the young of 

 some others, has rendered the solution of it interesting. 

 The greatest uncertainty, however, has latterly resolved 

 itself into, whether the Parr was distinct, or a variety or 

 young of the common Trout, S.fan'o: with the migratory 

 Salmon it has no connexion whatever." 



" Among the British Salmoni(l(C, there is no fish w'hose 

 habits are so recfular, or the colours and markinof so constant. 

 It frequents the clearest streams, delighting in the shallower 

 fords or heads of the streams, having a fine gravelly bottom, 

 and hanging there in shoals, in constant activity, apparently 

 dav and night. It takes any bait at any time with the 

 greatest freedom ; and hundreds may be taken when no 

 Trout, either large or small, will rise, though abundant among 

 them. That part of its history only which is yet unknown 

 is the breeding. Males are found so far advanced as to have 

 the milt flow on being handled ; but at that time, and 

 indeed all those females which I have examined, had the roe 

 in a backward state ; and they have not been discovered 

 spawning in any of the shallow streams or lesser rivulets, like 

 the Trout." 



