ITII.ITY UF MK.Mni; \M)\. 55 



which is I'oiiunoii to most of the hirgc Scuiiish and Irish iuhuid 

 waters, and which is pronounced by Mr. Afijassiz to he distinct 

 iVoui any of the continental Lake Tront — these teeth extend 

 uluug tlie whoK" leufjth of the vonu'r. 



And in the LochU'ven Tront [S<i/nio Lcrcnt'usis sivc Cffcifi'i', 

 Walker and Palmer), if it i)e a distinct species from the Coninion 

 Trout (.SV/////0 faWo), as appears to be eoneedetl — althoiiirh 1 must 

 say I doubt it, as 1 do the (Jillaroo, which, however, is more 

 doubtful — there arc thirteen teeth on the vomer, cxtendiu}; 

 throujrli its whole leni;th. 



It would be well, indeed, if American anglers would take a 

 little pains about the examination of llicse points, and would 

 note them dow n in their tablets — in w Inch, doubtless, they insert 

 the weight of their captives — together with the relative propor- 

 tion of the length of the head to that of the entire body; the 

 form of the gill-covers; and relative position of the eye to a 

 line drawn from the front teeth to the lower posterior 

 angle of the upercuhnn or stili-upcrruliim, as it may be ; the 

 number of rays in each of the several tins ; and especially the 

 form of the caudal tin-tail — whether forki'd, concave, s(|uare, or 

 convex. 



.V very few memorauda on such points as these, accurately 

 recorded, and assisted, where practicable, by the roughest 

 sketch, would be of greater utility tt) the cause of science, than 

 can be readily innigincd ; and we shonhl undoubtedly soon 

 arrive at facts of great importance, and perhaps discover some 

 new and intcn^tijig RjHicics of this most interesting family. 



At all events, we should not ho tantalised by information so 

 vague and indefniitc a-s that conveyed in a note to the Appcntlix, 



