176 VIGNETTES FROM NATURE. 



Scotch pools, we should probably find that 

 they all agreed in certain broad characteristics 

 which really re-called the original ancestor 

 more fully than the lowland species recalls 

 him. Only these broad characteristics would 

 be largely masked by the special adaptation 

 of the Loch Stennis trout to the pools of 

 Orkney, and of the Llyn Gwernant species to 

 this particular petty Welsh tarn. 



