6 best's art 01' ANGLING. 



the Trout. 19. fibula salmonisimilis, the Guin- 

 niad. 20. Trutta Salmonata, the Sahnon Trout. 



21. Trutta Lacustrisj tlie Scurf, or Bull Trout* 



22. Umbla minor Gesn, the RedCharr, or Welch 

 Torgoch. 23. Carpi lacus Benaci, the Guilt, 

 or Gilt Charr. 24. Lucius, the Pike, or Pickerel. 



25. Percajiuviatilisj minor sen aurata, the RufF. 



26. Piscis acu/eatus vulgaris, seu pu7igitius Alberti, 

 the Common Prickle Back Sharpling, or Ban- 

 sticle. 27. Piscis Jculeatus minor, the Lesser 

 Prickle Back. 28. Percaftuviatilis, the Perch. 



The eyes of fishes, compared with those of 

 terrestrial animals exhibit certain distinctions of 

 structure, adapted to their state and element. 

 That part of it called the crj'stalline lense, is 

 much rounder than the eye of terrestrial animals. 

 The ej'es of fishes, in their natural and indolent 

 state, appear to be adjusted to near objects, in 

 this respect differing from the human eye, as 

 well as those of quadrupeds and birds. The 

 ordinary shape of the fish's eye, being in much 

 higher degree convex, than that of land ani- 

 mals, a corresponding difference attends its 

 muscular conformation, viz. thatitis thoroughly 

 calculated for flattening the eye. 



The 2775 also in the e^'es of fishes does not 

 admit of contraction. This is a great difference, 

 of which the probable reason is, that the dimi- 

 nished light in water is never too strong for the 

 retina. 



In the Ed, which has to work its head through 

 sand and gravel, the roughest and harshest sub- 

 stances, there is placed before the eye, at some 

 distance from it, a transparent horny convex 

 case or covering, which, without obstructing the 

 sight, defends the organ. How wise is Provi- 

 dence ! 



