3 02 



LEISURE-TIME STUDIES. 



scientific observer were asked which surfaces were flattened 

 in these fishes, he would be very apt to reply that the one 



FIG. 59. Flat-fishes (after Gosse) : A, sole ; B, monochirus ; c, turbot. 



ilat surface was the back, and the other the belly of the 

 animal. In proof of the correctness of his assertion, he 



Fig. 60. Flat-fishes : A, halibut ; B, flounder. 



might point to the well-known fact that one surface the so- 



