Before the reclamation of the fens, the swamps and meres which covered so large a portion of the soil were the haunt of innumerable wild fowl, which were the source of considerable profit to the fensmen. Of late years their numbers have greatly diminished, but the London market is still largely supplied from this district. Flat-bottomed boats screened by reeds so as to resemble floating islands are fitted with heavy duck-guns, from a single discharge of which dozens of birds sometimes fall. One of the best duck-decoys remaining in East Anglia lies at a short distance from the road midway between Peakirk and Crowland. A small mere a few acres in extent forms the scene of operations. From this run eight ditches, or "pipes," as they are locally called, ten or twelve feet wide at the entrance, and about a hundred feet long, diminishing to a narrow gutter at the end. They curve round so that only a small part of the whole is visible from any point. They are inclosed by walls of matted reeds and roofed over by nets. Tame ducks are trained to lead the way into the mouths of the pipes, and are followed by the wild fowl. Little dogs, of a white or red colour, enter the pipes through holes made in the reed screens, gambol about inside for a minute or two, come out again, and again show themselves a little higher up the pipe. The wild fowl, though easily alarmed, are very curious and inquisitive. They swim or fly forward to investigate this strange phenomenon till they have gone too far to recede, when the net closes upon them, and the whole flock is taken. [Illustration: 0183]