110 Book of the Black Bass. 



being connected with the olfactory bulbs of the brain, and 

 are necessary to such fishes in the procuring and detection 

 of their food. 



Do Fishes Sleep. 



As fishes possess no eye-lids, the eyes, consequently, al- 

 ways being' open, the absurd question is often asked, " Do 

 fish sleep?" I say absurd, for it certainly seems so to 

 imagine that fishes alone of all the animal creation do not 

 sleep. That they sleep, and sleep every day is not to be 

 doubted. They sleep very lightly, however, and are easily 

 awakened by the slightest jar on the bank, or, as I believe, 

 from sounds in the air of an unusual character. From my 

 observations of fishes in the ponds of fish hatcheries, T 

 think they sleep mostly during the middle hours of the 

 day and night. 



