Microscopical Essays. 



•with wonderful art. In fome fcales we difcover a prodigious 

 number of concentric flutings, too fine, as well as too near each 

 other, to be eafily enumerated ; they are probably formed by the 

 edges of each ftratum, denoting the limits thereof, and the 

 different ftages of the growth of the fcale. Thefe flutings are 

 often traverfed by others that proceed from the center of the 

 fcale, which is feldom in the middle thereof; thefe generally *go 

 in a flrait line from this center to the circumference. 



Fig. 7, Plate X. reprefents a fcale from a fpecies of the parrot 

 fifh of the Weft-Indies, confiderably magnified. Fig. 8, the real 

 fize of the fcale. 



Fig. 9, Plate X. is a fcale of the Tea perch, which is found on 

 the Englifh coaft. 



Fig. 10, the fame fcale of the natural fize. 



Fig. 7, Plate XIX. a fcale from the haddock, as feen in the 

 microfcope. Fig. 8, the fame of the natural fize. 



Fig. g, Plate XIX. a fcale from a fpecies of perch from the 

 Weft-Indies, magnified. Fig. 10, the fcale of it's real fize. 



Fig. 11; a fcale from the fbal-fifh, delineated as it appeared in 

 the microfcope ; the pointed part is that which ftands without 

 the fkin, as may be feen in Fig. 5, which reprefents a piece of 

 the fkin of the foal, as viewed by the opake microfcope. Fig. 6 

 and 12, the fame objecls of their real fize. 



C H A T. 



