Apparently satisfied, he bent towards the two lads and whispered: "I'm going to the second pipe.

Come quiet.

Not a word, and when I mak' room for you, peep through the screen for a minute, and then come away." The boys nodded, and followed in silence through a part of the alder wood which was not quite so dense, for here and there patches of tall reeds had grown out of a watery bed, and now stood up seven or eight feet high and dry and brown.
Then all at once Dave stopped and looked back at them with a sly kind of grin upon his face, as he pointed down to a strong net stretched loosely over some half hoops of ash, whose ends were stuck down tightly in the soft ground so as to form a tunnel about two feet wide.
This was over the soft earth, upon which lay the end of the net, tied round with a piece of cord.

A few yards farther on, however, this first net was joined to another, and the tunnel of network was arched over a narrow ditch full of water, and this ditch gradually increased in width as the man led on, and ran in a curve, along whose outer or convex side they were proceeding.
Before long, as the bent-over willows spanned the ditch or "pipe," as it was called, the net ceased to come down quite to the ground, its place being occupied by screens made of reeds and stakes, and all so placed that there was room to go round them.
The boys now noted that the dog was following close behind in a way as furtive as his master, and apparently quite as much interested as he in what was to take place.
The water ditch increased in width rapidly now till the net tunnel became six feet, twelve feet, twenty feet, and, close to the mouth, twenty-four feet wide, while the light ash-poles, bent over and tied in the middle, were quite twelve feet above the water.
They were now near the mouth of the curved ditch, whose narrow portion bent round quite out of sight among the trees, while at a signal from Dave they went to a broad reed screen in front, and gazed through an opening, to see stretching out before them, calm and smooth beneath the soft grey wintry sky, a large pool of about a couple of acres in extent, surrounded by closely growing trees similar to those through which they had passed, while at stated intervals were openings similar to that by which they stood, in all five in number, making a rough star whose arms or points were ditches or pipes some five-and-twenty feet wide, and curving off, to end, as above told, sixty or seventy yards from the mouth, only two feet wide, and covered right along with net.
All this was well-known to them before, and they hardly gave it a second glance.

What took their attention were some half dozen flocks of water-fowl seated calmly on the smooth surface of the pool and a couple of herons standing in the shallow water on the other side, one so hitched up that he seemed to have no neck, the other at his full height, and with bill poised ready to dart down at some unfortunate fish.
Here and there a moor-hen or two swam quietly about flicking its black-barred white tail.