NATURALIZATION OF FISH. 211 



at its lowest ebb they still retain a large body of 

 water. In fact, their only connection with the 

 sea ys by a gulf, or strait, which, with the tides 

 therhselves, is formed alternately into an influx 

 and reflux current. Upon this gulf is placed a 

 wire grating, to prevent the escape of such fish as 

 the estuaries are stored with ; the cod, the had- 

 dock, ling, whiting, flounder, and even salmon, 

 along with many other salt water tribes, are thus 

 kept within reach at all seasons and in all weathers. 



A very remarkable pond of this kind has ex- 

 isted for some years back at Portnessock, in Wig- 

 tonshire ; not only have fish been provided for, 

 but actually domesticated in it, so as to recognise 

 their keeper, and even take their food out of his 

 hand. 



Also at Valleyfield, on the Firth or Forth, near 

 Culross, there is a salt water preserve, belonging 

 to Sir Robert Preston, in which are fed stores of 

 fish of various kinds ; turbot, brill, salmon trout, 

 cod, skate, flounder, smelt, sole, and herring, are 

 the most distinguished. The fish are fed with 

 offals, and broken shell fish. 



Stoddart's Scottish Angler. 



Cultivation of Fish. Mr. Bakewell, in his 

 Travels in the Tarentaise, suggests the idea of 

 introducing exotic fish ; he mentions some Swiss 

 species that he thinks would be valuable. 



