APPENDIX XIII. 355 



a course of fishing so extensive as that carried on at 

 present, coupled with the destruction incidental to unpro- 

 tected breeding, we must at all events speedily narrow, if 

 not exhaust, the capital stock. We have done so in the 

 case of the salmon ; and the best remedy for that evil 

 which has yet been discovered is cultivation, — piscicul- 

 ture, in fact, — which science, or rather art, I have already 

 treated of on its own merits. In ancient days the land 

 yielded sufficient roots and fruits for the wants of its then 

 population without cultivation ; but as population in- 

 creased, and larger supplies became necessary, cultiva- 

 tion was tried, and now in all countries the culture of the 

 land is one of the main employments of the people. The 

 sea, too, must be cultivated, and the river also, if we de- 

 sire to multiply or replenish our stock of fish. 



