172 FISH HATCHING. 



of the Pools ' is simply difference of natural 



vigour, and also of food, in these three dif- 

 ^ ferent-sized young salmon. 



" I liaA^e taken the specimens, which I have 



put up again in the bottle, to ' The Field ' 



office, that those interested in the subject may 



examine for themselves both the external as 



well as the internal appearances. 



" Fkank Buckland." 



