AND GLEANINGS. 



Progressive motion of fishes is effected by the 

 simplest means ; the principal instrument em- 

 ployed for this purpose is the tail ; for the fins 

 are merely auxiliary organs, serving chiefly to 

 balance the body, whilst it receives its propul- 

 sion from the tail. A fish moves in the water on 

 the same principle as a boat is impelled by 

 sculling. Dr. Roget. 



ORGANS OF FISH. HEARING. 



Artedij and many celebrated authors, maintain 

 that fish hear, and that all cetaceous fishes have 

 the auditory passages apparent. 



Sivammerdam also asserts that fish hear, and 

 adds, that they have a wonderful labyrinth of the 

 ear for that purpose. 



John Hunter supposes that fish are possessed 

 of the perfect organs of hearing : and that the 

 organ creating that power consists of a hard 

 substance resembling gristle, and in some species 

 crusted over with a thin plate of bone that admits 

 of no collapse, and which he denominates an ear. 



When I was at Moorshedabad, the collector 

 had a large tank full of fish, that were petted by 

 his daughter, who erected a bell, which, when 

 rung, brought all the fish from the different parts 

 of the pool, to be fed. So tame were they, that 



