MANAGEMENT OF POND-FISH. 443 



, With regard to the absolute weight of Fish, which 

 any particular pond will support, this can only be de- 

 termined by observation and experience ; as it de- 

 pends on the different degrees of nutrition in different 

 waters. It is said, that Carp and Tench in waters 

 which feed well, will, before they are aged, double 

 their weight in one year. 



The third part of an acre in No. 1 would probably 

 be sufficient for the demand of any family i For, upon 

 the calculation above given, it would support near 

 700 pounds of Fish, which might be divided thus : 



50 Brace of Carp, of three pounds each and up- 

 wards. 



50 Brace of Tench, of two pounds each and up- 

 wards. 



50 Brace of Perch, of one pound each and up- 

 wards. 



That is, three Brace of Fish, weighing at least 

 twelve pounds for the use of every week. 



Allowing one acre for No. 5, one third of an acre 

 for No. 1, and one aqre and two thirds for the inter- 

 vening numbers, the whole water would be .three 

 acres. Upon this calculation, the stock of No. 1 ; at 

 8d. per pound, would be worth 2; 31. 6s. 8d. per an- 

 num, and the expence annually of changing the Fish 

 from No. 5 to 4, &c. will not exceed ]1. 6s. 8d. 

 So that the value of each acre would be at lowest 

 71. 6s. 8d. annually. 



No. 1 being supposed to be near the house, and at 

 no great distance from the garden, if the Fish should 

 not thrive sufficiently^ which will be seen by the dis- 

 proportioned size of the head, and the whiteness or 

 paleness of the scales, they may easily be supplied 

 .with more food by loose peas from the garden, the 

 sweeping of the granary, worms saved by the Gar- 

 dener in digging, and the offal of the poultry killed 

 for the kitchen ; or by letting dowu the water about 



