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had no opportunity to afcertain their real age. In 
the pond at Charlottenburg, a palace belonging to 
the king of Pruffia, I faw more than two or three 
hundred carp between two and three feet long ; and 
I was told by the keeper, they were between 50 and 
60 years ftanding : they were tame, and came to the 
fhore in order to be fed ; they fwallowed with eafe a 
piece of white bread, of the fize of half a half- 
penny roll. 
During winter, ponds ought to have their full com- 
plement of water ; for the deeper the water is, the 
warmer lies the fi(h. In cafe the pond be covered 
with ice, every day fome holes muft be opened, for 
the admiffion of frefh air into the pond, for want of 
which frequently carp perifh. 
In the fummer, obferve to clean the rails and wire- 
works, in the water-courfes, of the weeds and grafs, 
which frequently ftop them up. Birds that feed on 
iifli muft be carefully kept out of the ponds. In a 
great drought, provifion ought to be made, to keep 
the water at the fame height as it commonly (lands in 
the pond, t. e. between four and five feet. If the 
water ftagnates and grows putrid, it muft be let off*, 
and a fupply of frelh water be introduced from the 
refervoirs. If the weeds, cfpecially reed and flags, 
and fome of the aquatic gralTes, over-run too much the 
pond, feithes fixed on poles of 16 or 20 feet, with 
a lead faftened to them to keep the feithes on the 
bottom of the pond, are thrown out, and then again 
drawn to the perfon that works with them, and the 
weeds will all be cut ; after which operation, they 
muft be drawn up by long harrows, and fet in heaps 
on the ftiore for putrefadion, and in length of time, 
