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 have 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." 



