40 OF FISHES IN GENERAL. 



are inhabitants of the fea ; I'uch as the cod, ling, her- 

 ring, pilchard, and fparling. The migratioris of the 

 herring are well known. In the months of June and July, 

 it iiTues in vaft flioais from the unexplored regions of the 

 northern ocean ; furrounds the Britijh ifles, and enters the 

 bays and arms of the fea. Thefe fiihes are known to take up 

 their reiidence in fome particular loch or creek for eight 

 or ten years, and then to refort to another for a fimilar 

 period. The tythe, the calfifh, the cod, and whiting, 

 have all their feafons of migration. The laft, in parti- 

 cular, are probably forced upon thofe immenfe journeys 

 from the coafts of yJtnerica to thofe of Spain and yifrica^ 

 to avoid the purfuit of the cod, and other rapacious 

 invaders . 



From thefe obfervations, it would appear, that fiHi of 

 the fame fpecics are capable of living in very diiferent 

 quarters of the globe, and of enduring various degrees of 

 heat and cold ; a circumftance which opens a vail field 

 for the enterprife and ingenuity of man in tranfporting 

 them, and rendering them fubfervient to the purpofes of 

 domeftication. It is impoflible to determine to what 

 length this operation may be carried, or to afcertain how 

 great an acceflion might thus be made to the fuftenance 

 of the human race. 



