These shoats Bob now caught, and dropped into the bay, knowing that their instinct would induce them to swim for the nearest land. All this turned out as was expected, and the pigs were soon seen on the island, snuffing around on the rocks, and trying to root. A small quantity of the excrement of these animals still lay on the deck, where it had been placed when the launch was cleaned for service, no one thinking at such a moment of cleaning the decks. It had been washed by the sea that came aboard quite across the deck, but still formed a pile, and most of it was preserved. This manure Mark was about to put in a half-barrel, in order to carry it ashore, for the purpose of converting it into soil, when Bob suddenly put an end to what he was about, by telling him that he knew where a manure worth two of that was to be found. An explanation was asked and given. Bob, who had been several voyages on the western coast of America, told Mark that the Peruvians and Chilians made great use of the dung of aquatic birds, as a manure, and which they found on the rocks that lined their coast. Now two or three rocks lay near the reef, that were covered with this deposit, the birds still hovering about them, and he proposed to take the dingui, and go in quest of a little of that fertilizing manure. A very little, he said, would suffice, the Spaniards using it in small quantities, but applying it at different stages in the growth of the plant. It is scarcely necessary to say that Bob had fallen on a knowledge of the use of the article which is now so extensively known under the name of guano, in the course of his wanderings, and was enabled to communicate the fact to his companion. Mark knew that Betts was a man of severe truth, and he was so much the more disposed to listen to his suggestion. While our young mate was getting the boat ready, therefore, Bob collected his tools, provided himself with a bucket, passed the half-barrel, into which Mark had thrown the sweepings of the decks, into the dingui, and descended himself and took the sculls. The two then proceeded to Bob's rock, where, amid the screams of a thousand sea-birds, the honest fellow filled his bucket with as good guano as was ever found on the coast of Peru.

While the boat was at the rock, Mark saw that the pigs had run round to the western end of the island, snuffing at everything that came in their way, and trying in vain to root wherever one of them could insert his nose. As a hog is a particularly sagacious animal, Mark kept his eyes on them while Bob was picking out his guano, in the faint hope that they might discover fresh water, by means of their instinct. In this way he saw them enter the gate way of the crater, pigs being pretty certain to run their noses into any such place as that.

On landing, Mark took a part of the tools and the bucket of guano, while Bob shouldered the remainder, and they went up to the hole, and entered the crater together, having landed as near to the gate-way as they could get, with that object. To Mark's great delight he found that the pigs were now actually rooting with some success, so far as stirring the surface was concerned, though getting absolutely nothing for their pains. There were spots on the plain of the crater, however, where it was possible, by breaking a sort of crust, to get down into coarse ashes that were not entirely without some of the essentials of soil. Exposure to the air and water, with mixing up with sea-weed and such other waste materials as he could collect, the young man fancied would enable him to obtain a sufficiency of earthy substances to sustain the growth of plants. While on the summit of the crater-wall, he had seen two or three places where it had struck him sweet-potatoes and beans might be made to grow, and he determined to ascend to those spots, and make his essay there, as being the most removed from the inroads of the pigs. Could he only succeed in obtaining two or three hundred melons, he felt that a great deal would be done in providing the means of checking any disposition to scurvy that might appear in Bob or himself. In this thoughtful manner did one so young look ahead, and make provision for the future.

Chapter VI

*

"—that done, partake
The season, prime for sweetest scents and airs;
Then commune how that day they best may ply
Their growing work; for much their work outgrew
The hands dispatch of two gard'ning so wide."

Milton.

Our two mariners had come ashore well provided with the means of carrying out their plans. The Rancocus was far better provided with tools suited to the uses of the land, than was common for ships, her voyage contemplating a long stay among the islands she was to visit. Thus, axes and picks were not wanting, Captain Crutchely having had an eye to the possible necessity of fortifying himself against savages. Mark now ascended the crater-wall with a pick on his shoulder, and a part of a coil of ratlin-stuff around his neck. As he went up, he used the pick to make steps, and did so much in that way, in the course of ten minutes, as greatly to facilitate the ascent and descent at the particular place he had selected. Once on the summit, he found a part of the rock that overhung its base, and dropped one end of his line into the crater. To this Bob attached the bucket, which Mark hauled up and emptied. In this manner everything was transferred to the top of the crater-wall that was needed there, when Bob went down to the dingui to roll up the half-barrel of sweepings that had been brought from the ship.

Mark next looked about for the places which had seemed to him, on his previous visit, to have most of the character of soil. He found a plenty of these spots, mostly in detached cavities of no great extent, where the crust had not yet formed; or, having once formed, had been disturbed by the action of the elements. These places he first picked to pieces with his pick; then he stirred them well up with a hoe, scattering a little guano in the heaps, according to the directions of Betts. When this was done, he sent down the bucket, and hauled up the sweepings of the deck, which Bob had ready for him, below. Nor was this all Bob had done, during the hour Mark was at work, in the sun, on the summit of the crater. He had found a large deposit of sea-weed, on a rock near the island, and had made two or three trips with the dingui, back and forth, to transfer some of it to the crater.