44 PERCH PROFIT MADE BY FISH. [PART T. 



Perch do not appear to grow to a large size 

 in his waters, not running commonly to more than 

 a pound weight, although, from the large number 

 taken with rod and line, as much sometimes as 

 forty pounds weight to a single rod in a day, 

 they may scarcely have a fair chance of obtaining 

 their full dimensions. Thinking however that his 

 breed is an indifferent one, Mr Maltby has crossed 

 it with some from the Meuse, by which he hopes 

 to improve it. Similarly, with a view of improv- 

 ing his breed of Carp, he has imported some 

 from the Rhine, whereby he has already obtained 

 a very handsome cross in point of shape and 

 colour, besides an actual improvement in the 

 quality of the fish. 



Every year, or every two years, he has a sale 

 of his fish, as well to cover rent and current ex- 

 penses, as because he gains nothing on large fish, 

 these not being marketable. 



The profit made is upon those which weigh 

 three quarters of a pound when put in, and from 

 two pounds and a half to three pounds and a half 

 when taken out, so that he only saves such fish, 

 above those weights, as are peculiarly handsome 

 in shape and colour. The whole of his waters, 

 collectively, thus contain (with the exception of 



