I was no longer in any fear about expending my manilla rope, for I had some time since begun to use strips of rawhide of the goats skins for lashings, than which nothing could be better, and I also cut many skins into very fine strips after they were tanned, which served me for smaller strings, and even thread for rough sewing. For finer sewing I often used the sinews of these creatures, and I had by this time converted several of my nails into steel, after having pierced them with an eye, and by grinding them down and polishing them upon stones I had made several very good sail-needles, which were extremely useful, and it was a small matter to make a "palm," or sailor's thimble, from the skin of a goat, to go upon the right hand, to force the needle through any material, exactly the same as is done by sailors in all their stitching and sail-making. In place of the little round thimble fixed into the centre of the palm, to receive the head of the needle in pushing, I inserted a flint-stone with a roughened surface, which answered the purpose very well, and I could now do all kinds of rough sewing without the use of my awl, which had been a slow and laborious manner of proceeding. From this time forth I had no difficulty in sewing my jackets and trousers with strong sinews, which held them firmly together in the seams. It is scarcely credible how many things I gathered around about me that were useful as well as ornamental.
Before I had done completely furnishing my house I set about making me a movable chair, as well as the easy ones that I had made of old roots, and this I did by means of my hatchet. I procured four smooth limbs of trees, two of which were about four feet in length and two about one foot six inches. The latter were to serve as the front legs, the former as the back legs and also the back of the chair. These limbs were about two inches in diameter, as I did not wish the chair to be heavy, but light and portable. Into all these uprights I bored holes at proper distances by means of my anchor shank, heated to a red heat, which I thrust through them, and cutting smaller round limbs for rungs I forced them into the holes made by the hot iron, and soon had the skeleton of a nice light chair made to my hand. I was so pleased with it that I set about another immediately, and soon had it also finished. It was not at all a difficult job for a mechanic. For the seat of these chairs, upon one I wove rushes thick and strong, and upon the other I laced a fine piece of seal skin with the fur left on. They were both useful and comfortable, but rather straight in the back, like the old ancestral chairs that I used to see in the attics in Vermont.
I had got tired by this time shooting at the wild pigeons with my arrows, and found no difficulty in capturing all I wanted by means of snares, made from the hair of my goats, which I set at the watering-place whenever I wanted any of them for food, and gave over firing ten or fifteen shots before I could kill one, when I could capture a dozen in an hour should I need them.
I took down my goat-skins at the windows and replaced them by thin skins of the same animal, almost parchment, which gave some light through them, and fastened them up with thorns, driven into the wood, for the winter, the open door giving me, with their subdued light, enough to see by so as to perform all the work that I wanted to inside, and when night came I had my lamps in full blast, for oil cost me nothing.
I made, before winter set in, several excursions, in all directions, and especially one in the direction of the mountain that lay upon my right hand, only about a mile from the Hermitage, when I went to the coal-mine. This mountain I made up my mind to ascend, and see if I could not make some new discovery. I fought my way up its steep sides till I had arrived at nearly one-half the distance, apparently, from its summit, when I was halted by the appearance of a small brook that trickled past my feet. I noticed that the water and the stones were both of a brown, rusty color, and it flashed upon me that it must be caused by iron. If I could only find that substance I thought that I could be almost happy, even in my solitude. What could I not do with that metal to aid me? the handling of it would be to me child's play. I could make of it cast-steel, and of cast-steel all manner of tools by means of moulds. This working in iron had been my trade, and I had no occasion to consult my book to know how to avail myself of it should I be so fortunate as to find it. I followed this little trickling brook, not over six inches wide, till it branched into two smaller ones, and, still following the smaller one, traced it till I came to a place where, in a bubbling spring, the water issued from the mountain's side. The discoloration of all the stones near me proved to me that I was near iron, and that the mountain whence the tiny streams issued contained it; but in how large masses I could not judge.
I left my little stream and looked about me carefully, to the right and left, for I did not want to pierce the mountain whence the water issued, as I wanted a dryer spot to make my explorations, and knew that if there was iron it would be found near by the brook as well as in the exact spot whence the spring burst forth. I finally, at a little distance to the left hand and rather down the hill, found a place that looked as if it might prove a good locality to prosecute my search. The ground was covered with boulders, of different sizes, and there was quite an opening on the mountain side, the undergrowth being only shrubs and plants, with the trees and groves below me in larger groups. In this opening I set to work, turning over such boulders as I could lift, and there were many that by aid of a handspike, cut from a sapling with my hatchet, I was able to remove and send bounding down the mountain side. I scratched into the side of the mountain in this way till I had made quite a little excavation, but I was obliged to give it up and return home for my pickaxe, as I called my anchor-fluke, and with this instrument, and carrying my dinner with me, I attacked the mountain the next day and made more progress. After working some little, in an irregular way, into the mountain side,—for I had to avoid the heavier boulders and solid stone,—I came upon a crystallized mass between two rocks that seemed to be exuding from the mountain side. It looked something like common salt, and I put some of it in my mouth to see if I could recognize what it was by the taste. It had hardly reached my palate before I sank down upon the earth where I stood, with the excitement of the knowledge of the discovery that I felt sure I had made. My sense of taste told me plainly that I had found saltpetre, and saltpetre meant gunpowder! GUNPOWDER! and gunpowder meant strength to protect myself with and power to blow the mountain to atoms to come at my iron should nature try to resist me by enfolding it concealed in its bosom. I grasped my pickaxe and picked out quite a lump of my precious discovery, and started hastily for home.
It was too late to do much on that day, as my usual household cares and the milking of my goats and getting supper took up most of my time; besides I wanted to consult my book as to the proportions in which to mix my ingredients to make gunpowder. I knew nearly the right proportions, and felt confident that I could get it exactly by repeated experiment, but I also knew that my book would give it to me exactly and save me much loss of time in this direction. I knew also that willow or alder made the best charcoal for gunpowder, and, thank God, there was no lack of these trees upon the island. If I obtained gunpowder I could make some kind of a gun, for I knew that, in ancient history, cannon even had been made of leather, and fired repeatedly without bursting. I could certainly make a tube of some kind, so strongly reinforced with skin and twine and raw hide, that it would stand the discharge of a small quantity of powder without bursting, and if I found iron I would soon solve all the difficulties about a gun barrel, let me once get hold of the raw material in any quantity.
A thought struck me in this connection. I would soon prove whether there was iron in the mountain side by taking my compass there on the next trip, and seeing if it was drawn from the true north towards the mountain side, and if so, in what direction: this would tell me how to dig towards my treasure, and not waste time by going in any wrong direction. This seemed a happy thought, and I was jubilant over having conceived it. The only thing that I did to help things along for the morrow was to pick out carefully, from my wood-fire ashes, small pieces of charcoal that I thought would serve my purpose, and to pick off from several pieces of my coal a quantity of sulphur all ready for my experiments. The next morning I set to work in good earnest, and having discovered the proportions in which to add my different ingredients, I soon had the pulverized charcoal, sulphur, and saltpetre together, and then, moistening the mass slightly, I kneaded them together till they were completely incorporated. I then, by a slow heat, dried my gunpowder cake upon hot stones that I heated at the fire and then carried to a distance, first carefully dusting them, and placed my gunpowder paste upon them in an earthen jar to be dried. As my cake was not very large, I was not very many hours in doing this; and as I knew that I ought not to use any iron or stone in pulverizing the mass, whilst this was going on, I procured a smooth rolling-pin made from the round branch of a tree, and smoothed quite a surface on the upper side of a large fallen tree with my hatchet, so that I had a sort of table to roll my powder upon. Again, to prevent all accidents, when my cake was thoroughly dry, I carried it bit by bit, having broken it by a blow of my wooden rolling-pin, to my fallen-tree table, where I crushed it under the roller, putting pieces no larger than my thumb-nail under the roller at one time, so if there should be an explosion, it would be on so small a scale that it would not injure me in the least, should it take place. As fast as this small amount was pulverized, I carried it again to a distance and placed it in a gourd for safe keeping, but I pulverized very little before I interrupted my task to rush with quite a handful to my fire, and, taking a pinch, I cast it into the flame, and, puff, puff, puff, it ignited as it struck the fire, just as the particles used to do in my boyhood days. Even this did not, however, satisfy me. I laid the rest down upon the floor, and standing at a distance with a coal in one end of a cleft stick, touched it, when it exploded as quickly and completely as any ever turned out by any mill. One more proof and I would be convinced. I ran and got from the sea-shore one of the large shells for which I have no name, but which I had formerly used as lamp reservoirs, and going to my powder table, soon pulverized enough to pour a handful into it, and to close up the lips with moist clay, except one orifice; to this I laid a piece of manilla soaked in the dampened powder as a slow match, and having set fire to the same, and retired to a safe distance, I awaited the result. It seemed an eternity before the slow match burned to the orifice, but when I had almost given up hope, in one instant, with a loud report, the sea-shell was burst into a thousand fragments. I was successful; power and strength were added to my resources. I lay down upon the sand by the sea-shore where I had retired to watch the explosion, and fell into a brown study, which enwrapped me, body and soul, for many hours, till I was called to myself again by the decreasing light of the setting sun. The next day I sallied forth, armed with my compass, for the mountain side, and upon arrival I noted the direction of the magnetic north by my compass, the card of which I had released from its packing and set upon its pivot. Having carefully ascertained this, I entered the small hole that I had made in the mountain side, and held the compass in several places against the earth, when the needle turned perceptibly away from the magnetic north and pointed in towards the interior of the mountain, and by several experiments I found out in just what direction I ought to advance, and by the attraction of the needle I felt sure that the ore, which I now was convinced was there, could not be very far distant from where I stood, and that one large blast would lay it open to me. I therefore went to work and gathered quite a quantity of the saltpetre and started for home to make my gunpowder for the blast that was to open up to me my long-sought treasure, valuable to me far beyond any other metal on this earth in the circumstances in which I was placed.
In five days' time I found myself in possession of over twenty pounds, I should judge, of good gunpowder. I found by my book that it was not at all peculiar to find potassium as I had found mine, and further, that to purify it I needed to mix it with equal parts of wood-ashes, and then add water and allow it to stand a few hours, and then draw off the lye and place it for three days in the sun, in shallow vessels, to evaporate, and then boil down what was left, to procure absolutely pure saltpetre, all of which I did. And when I had manufactured my powder, and observed by experiment that it was much sharper and louder in explosions than before, showing the improvement of purifying the saltpetre, I placed the whole lot in my goatskin bag and started for the mountain. Arriving at my excavation, I looked about to see what I could do to make my explosion effectual and do the most good. By examination, I found that there was quite a space between the two inner boulders that obstructed my way, and a sort of vent-hole that led, I knew not where. Into this I commenced to pour my powder, and used up over two-thirds of all I possessed before I saw any result. Finally, the crevice, just as I began to despair and thought I had thrown away and lost it all, showed that it was full by refusing to receive any more. As soon as I noticed this, I knew that I had an excellent chance to make a good blast, and I therefore pushed in the powder in sight, and was able, by shoving it downwards, to add at least two pounds more. I then carefully inserted a strand of manilla previously soaked in wet powder, and dried, into the mouth of this crevice, and well down into the powder; I then stuffed the whole with small pebbles and moist earth, and finally placed quite a large rock against the vent, and, with a prayer for success I lighted the fuse and retired to a safe distance to watch the effect. As before, it seemed as if it would never ignite, and I waited and waited, taking care to be well distant and well sheltered behind a large boulder, till finally, with a dull, low, smothered noise, the charge exploded. I was disappointed, and was afraid that my powder was too weak or ill-made, but when I arrived at the spot I was amazed at the execution that had taken place: the whole roof had been uplifted and thrown open, and the boulders that had resisted my further entrance cast to one side, and the whole side of the mountain pierced and opened in a wonderful manner. I dashed into the opening that had been made, and the first fragment that my hand closed upon was pure iron ore. I was like one mad with joy. I acted as insanely as I had once or twice before since landing upon the island, and danced and sang, and ended by sitting down and bursting into tears. Upon further examination I was inclined to believe that the whole mountain was composed of iron, and that I only needed to pierce the crust in any direction to get the precious metal. My discovery lay just about one mile from my home, and quite accessible.
I found that the blast had brought to view quite a large surface, on one side, of my saltpetre, whilst further to the southward appeared the iron ore in masses that I could pry out with my pickaxe. After having feasted my eyes long enough upon my treasure, I started down the mountain, smoothing the pathway wherever it was rough, and opening up a way for my team and sled to bring down the ore to the hermitage.