Mr Saunders, A Note on the Food of Freshwater Fish. 289 
nothing else was present.” I myself opened the stomachs of two 
pike (Hsow lucius, L.) which were brought to me and found two 
roach in the one and one roach in the other. Other kinds of fish 
besides roach lived in the pond from which the pike were taken. 
This shows that both Pollan and pike as well as the stickleback 
like their meals to be composed of one thing only. 
(ii) Preference for a certain kind of food varies according 
to locality. 
Since all my observations have been made on sticklebacks 
taken from only three localities, I refrain from giving a list of the 
things they are capable of eating. It would be necessarily very 
incomplete. 
16—2 
