170 NATURALIST'S CABINET. 



Gillaroo trout Brown trout. 



in two or three of the pools in North Wales. 

 Some of the perch in the same country have a 

 similar deformity. In two or three of the lakes of 

 Ireland there is another variety called the gillaroo 

 trout. The stomachs of these trouts are so ex- 

 cessively thick and muscular as to bear some re- 

 semblance to the organs in birds called gizzards. 

 These stomachs are sometimes served up to table 

 as trouts' gizzards. In the common trout the sto- 

 mach is uncommonly strong and muscular; for 

 as well as small fish and aquatic insects, the ani- 

 mals live on the shell-fish of the fresh waters; and 

 even take into their stomachs gravel or small 

 stones, to assist in comminuting the testaceous 

 part of their food. 



The brown trout is merely a variety of the com- 

 mon trout, from which it differs not only in its 

 colour, but likewise in the place of its abode. 

 The head is large, and of a dark brown colour. 

 The upper jaw projects a little beyond the lower, 

 tind both of them are furnished with sharp teeth, 

 The iris of the eye is blue, and the pupil black, 

 with a red border. The back is round, the sides 

 are brown, and like the head are covered with 

 \iolet spots. The belly is white, and larger than 

 that of the common trout. Like the latter, it 

 inhabits streams whose water is pure, and cold, 

 and which have a gravelly bottom ; the only dif- 

 ference is, that it prefers shady brooks. Ir.F f.esh 

 turns; red when boiled, and i* better tasUd than 



