In those days I was thirteen, and Mary was ten years old. Walking on our way to the lake we had Mary's father with us for guide and companion. The good man served as bailiff on my father's estate. He was, besides, a skilled master in the art of decoying ducks. The dog that helped him (we used no tame ducks as decoys in Suffolk) was a little black terrier; a skilled master also, in his way; a creature who possessed, in equal proportions, the enviable advantages of perfect good-humor and perfect common sense. The dog followed the bailiff, and we followed the dog. Arrived at the paling which surrounded the decoy, the dog sat down to wait until he was wanted. The bailiff and the children crouched behind the paling, and peeped through the outermost dog-hole, which commanded a full view of the lake. It was a day without wind; not a ripple stirred the surface of the water; the soft gray clouds filled all the sky, and hid the sun from view. We peeped through the hole in the paling. There were the wild ducks--collected within easy reach of the decoy--placidly dressing their feathers on the placid surface of the lake. The bailiff looked at the dog, and made a sign. The dog looked at the bailiff; and, stepping forward quietly, passed through the hole, so as to show himself on the narrow strip of ground shelving down from the outer side of the paling to the lake. First one duck, then another, then half a dozen together, discovered the dog. A new object showing itself on the solitary scene instantly became an object of all-devouring curiosity to the ducks. The outermost of them began to swim slowly toward the strange four-footed creature, planted motionless on the bank. By twos and threes, the main body of the waterfowl gradually followed the advanced guard. Swimming nearer and nearer to the dog, the wary ducks suddenly came to a halt, and, poised on the water, viewed from a safe distance the phenomenon on the land. The bailiff, kneeling behind the paling, whispered, "Trim!" Hearing his name, the terrier turned about, and retiring through the hole, became lost to the view of the ducks. Motionless on the water, the wild fowl wondered and waited. In a minute more, the dog had trotted round, and had shown himself through the next hole in the paling, pierced further inward where the lake ran up into the outermost of the windings of the creek.