What is "chevens"

Usage examples of "chevens".

And now I will give you some rules how to catch him: and I am glad to enter you into the art of fishing by catching a Chub, for there is no fish better to enter a young Angler, he is so easily caught, but then it must be this particular way: Go to the same hole in which I caught my Chub, where, in most hot days, you will find a dozen or twenty Chevens floating near the top of the water.