46 GROWTH PROMOTED BY CHANGE OF WATER. [PART I. 



fish should not, by selection, proper management, 

 and feeding, be susceptible of improvement, just 

 as much as those of cattle, sheep, or poultry : 

 all that is required to insure it is doubtless care- 

 ful attention combined with a discriminating 

 judgment, such as Mr Maltby has brought to bear 

 upon the subject. It is much to be hoped that 

 it may be taken up by others who have time and 

 opportunities for prosecuting it, and that, stimu- 

 lated by his example, and encouraged by his 

 success, they will be induced to persevere, until 

 they have shewn that the many thousand acres 

 occupied by now unprofitable ponds, may be made 

 to return as good, if not (as I believe may be 

 the case) a better rate of interest, than the land 

 surrounding them. 



The following incident occurs to me as decid- 

 edly tending to confirm Mr Maltby's observation, 

 that the growth of fish is, under certain circum- 

 stances, much promoted by their transfer from 

 one piece of water to another. 



In a pond, the Roach in which were very 

 numerous, and ran generally from about four to 

 six inches in length, a friend and I one morning, 

 just at the close of the hay-harvest throwing a 

 worm fly-fashion, and drawing it in very slowly 



