Swiss Family Robinson

most curious phenomenon. The waters out to sea appeared agitated by some unseen movement, and as they heaved and boiled, their surface, struck by the beams of the morning sun, seemed illuminated by flashes of fire.
    Over the water where this disturbance was taking place hovered hundreds of birds, screaming loudly, which ever and anon would dart downwards, some plunging beneath the water, some skimming the surface. Then again they would rise and resume their harsh cries. The shining, sparkling mass then rolled onwards, and approached in a direct line our bay, followed by the feathered flock above. We hurried down to the shore to further examine this strange sight.
    I was convinced as we approached that it was a shoal or bank of herrings.
    No sooner did I give utterance to my conjecture, than I was assailed by a host of questions concerning this herring-bank, what it was, and what occasioned it.
    `A herring-bank,' I said, `is composed of an immense number of herrings swimming together. I can scarcely express to you the huge size of this living bank, which extends over a great area many fathoms deep. It is followed by numbers of great ravenous fish, who devour quantities of the herrings, while above hover birds, as you have just seen, ready to pounce down on stragglers near the top. To escape these enemies, the shoal makes for the nearest shore, and seeks safety in those shallows where the large fish cannot follow. But here it meets with a third great enemy.
    `It may escape from the fish, and elude the vigilance of sharp-sighted birds, but from the ingenuity of man it can find no escape. In one year millions of these fish are caught, and yet the roes of only a small number would be sufficient to supply as many fish again.'
    Soon our fishery was in operation. Jack and Fritz stood in the water with baskets, and baled out the fish, as one bales water with a bucket, throwing them to us on the shore. As quickly as possible we cleaned them, and placed them in casks with salt, first a layer of salt, and then a layer of herrings, and so on, until we had ready many casks of pickled fish.
    As the barrels were filled, we closed them carefully, and rolled them away to the cool vaults at the back of our cave. Our good fortune, however, was not to end here. A day after the herring fishery was over, and the shoal had left our bay, a great number of seals appeared, attracted by the refuse of the herrings which we had thrown into the sea.
    Though I feared they would not be suitable for our table, we yet secured a score or two for the sake of their skins and fat. The skins we drew carefully off for harness and clothing, and the fat we boiled down for oil, which we put aside in casks for tanning, soap-making, and burning in lamps.
    These occupations interfered for some time with our work at Rock House; but as soon as possible we again returned to our labour with renewed vigour . I had noticed that the salt crystals had for their base a species of gypsum, which I knew might be made of great service to us in our building operations as plaster.
    As an experiment, I broke off some pieces, and, after subjecting them to great heat, reduced them to powder. The plaster this formed with water was smooth and white, and as I had then no particular use to which I might put it, I plastered over some of the herring casks, that I might be perfectly certain that all air was excluded. The remainder of the casks I left as they were, for I presently intended to preserve their contents by smoking.
    To do this, the boys and I built a small hut of reeds and branches, and then we strung our herrings on lines across the roof. On the floor we lit a great fire of brushwood and moss, which threw out a dense smoke, curling in volumes round the fish, and they in a few days seemed perfectly cured.
    About a month after the appearance of the herrings we were favoured by a visit from other shoals of fish. Jack espied them first, and called to us that a lot of young whales were off the coast. We ran down and discovered the bay apparently swarming with great sturgeon, salmon, and trout, all making for the mouth of Jackal River , that they might ascend it and deposit their spawn amongst the stones.
    Jack was delighted at his discovery. `Here are proper fish!' he exclaimed, `none of your paltry fry. How do you preserve these sorts of fish? Potted, salted or smoked?'
    `Not so fast,' said I, `not so fast; tell me how they are to be caught, and I will tell you how they are to