PARTS OF 1NSKCT8, AND MISCELLANEOUS OBJECTS. 135 



parrot-fish of its natural size ; and in figure 225 the same is shown, as it ap- 

 pears when considerably magnified. The position of each layer is here indicated 

 by the numerous waving lines that cover the surface of the scale, and the ribs 

 and flutings which branch out from the middle portions, are very strongly marked. 



Fig. 226. 



Fig. 227. 



Figures 226 and 227, represent the scale of the sea-perch, both magnified and 

 of its natural size. This scale is broader in proportion to its length than that 

 of the parrot-fish, and unlike the latter, is destitute of the radial divisions. The 

 edges also of the component strata, as seen in the magnified figure, are not 

 bounded by curved lines, but are serrated, presenting an appearance like the 

 teeth of a saw. The lower part of the scale is likewise notched along the edges, 

 which gradually approach each other, and unite at the base. 



A scale of the haddock is delineated in figures 228 and 229, in the first of which 

 it appears of its natural size, and the other displays a magnified view of the same. 



