A much larger bowl was now granted us for the aquarium, and the spa and madrepores carefully brought from Lincoln (though the preserved hornet seemed to have been forgotten) did not more than cover the bottom of the new and sumptuous receptacle. Caddis-worms were culled from the streams that flowed Fal-wards, and whelk-like water-snails were comforted for their expatriation by having the chance of eating bread crumbs if so they wished. But the aquarium was still but a crawling democracy, and needed some denizen of livelier locomotive power to fill the post of king in this water-world. And then one day, as I have told before, in a book now mercifully forgotten, we caught the unique and famous stickleback, by accident you may say (if you believe in accidents), for certainly at the moment of his capture we had not even seen him, though it is true that we were dredging in the stream in which the otter still failed to make his appearance.
My sister Maggie and I then were just emptying out the dredging (butterfly) net thinking we had found no great treasure on that cast, when something stirred in the residuary mud, after we had extracted no more than a caddis worm or two, and it was he. With tremulous rapture we popped him in a jar for transport to the aquarium, and overcome with the greatness of the moment (like Paolo and Francesco) we fished no more that day. For perhaps a week he swam gorgeously about this new kingdom, never getting over his delusion that if he swam swiftly enough against the side of it, he would find himself at liberty again, and then the tragedy happened.
It was our custom every morning to empty out the contents of the aquarium, down the drain in the stable yard, and replace them with fresh water. During this operation one of us held a piece of gauze over the lip of the aquarium so that none of its inhabitants should be poured away. And on one of these occasions, when the water was nearly drained out, and the stickleback swimming in short indignant circles in the residue, Maggie’s hand which was holding the gauze slipped suddenly and in a flood the remaining pint or two rushed out, the stickleback in the midst of it. With one flick of his tail, he disappeared down the drain in the stable yard, leaving us looking at each other in incredulous dismay....