NATURALIZATION OF FISH. 



IF fish breathe indifferently in salt water or fresh, 

 (such water as cattle will drink) for one week, or 

 one month, and if in their new element they 

 thrive, fatten, and breed, the trial of three weeks, 

 or three months, is a proof that they will neither 

 sicken nor die of fresh water ; the experiment 

 seems to be clearly proved by Dr. M'Culloch, in 

 a space from four to six acres. 



The Brill has grown to double its size in one 

 year. 



Sole twice as thick. 



Plaice three times as thick. 



The Turbot from eight inches to double its 

 size, besides breeding. 



The Basse has propagated. 



The Red Mullet is living in good health. 



The Whiting also increases in breadth and fat- 

 ness. 



Grey Loach has bred considerably ; besides 

 various other fish, all improved in flavour. 



Bacon originally speculated on the project of 

 sea fish in fresh water. He remarks, " that fish 



