Within this tower I placed my flint-stone, steel, and tinder, and upon four smooth stones that I placed inside I fitted up on each a large sea-clam shell full of shark's-liver oil, and from milkweed pods provided each of them with a soft, cottony wick, which I lighted, and then closed the aperture. By peeping through the interstices I could see that my lamps burned splendidly, and by blowing I was unable to get up any current inside. My gigantic lantern was made. If my fire should go out, my flint and steel fail me, here was perpetual light. I placed four lights within, so that in case the roof should leak a drop in a heavy rain, some one or two of the shells would run a chance of not being put out. I did not intend to allow my fire to go out this night, but to burn the lamps as a test only of how much oil they would need, and how they would appear in the morning, so as to know what to expect should I leave them for any length of time.
Fixing my lamp-tower and pouring the condensed water into the breaker, getting wood for the fire, and my other labors, had made the day a hard one; but as the sun went down, and I supped upon the remains of my fish warmed up, and the inevitable eggs, and enjoyed my pipe, I could but think of how far I had advanced even in one twenty-four hours. Weapons by my side, a breaker full of fresh water, and perpetual light in a waterproof tower beside me. With the deepening shadows came, however, the bitter feelings of desolation and solitude, mingled with the uncertainty of the magnitude of my island, and the impossibility of my being able, except by exploration, to prove it uninhabited.
During this day my heart jumped into my mouth many times when I heard the least unusual noise, or, carelessly glancing up, mistook every tree for a savage. My complete freedom from any annoyance up to the present time was in itself satisfactory to my mind, and strong probable reason that the island was unpeopled. Then its unknown position—for I felt convinced that there was no known land where I was now sitting—improved the probabilities. I foresaw that my next task would be the exploration of the island and a search for fresh water; and, wondering what the future would bring forth, I rolled drowsily over into my seaweed bed, and dropped asleep in the very act.
CHAPTER VII.
Improve my lamp-tower. Make a bow and arrow, and fish-hooks and lines. Capture a large turtle. Improve my steel and flint, and build a hut. Procure some salt, and make arrangements to explore the island on the morrow.
I arose at sunrise and found another lovely day commencing. God had blessed me with pleasant weather each day so far. I went first to my calendar, and with the point of my knife inscribed the day and date, as usual; thence to my lamp-tower, and found all the lamps burning splendidly, but with not oil enough to have lasted more than two or three hours more. I foresaw that I must get a much larger and more shallow dish to have any certainty of keeping them alight for any length of time without replenishing them each morning and night. The principle upon which they were built was exactly that which I had often observed in the northern part of China, where the Chinese burn peanut oil in exactly the same way in shallow dishes, with a pith wick hanging over the side. The principle involved necessitated a shallow dish, and that the wick should be in nearly a horizontal position, to suck up the oil to its end which projected over the side of the clam-shell. If the reservoir for the oil was deep instead of shallow, the receding of the oil as it was consumed by the wick would soon let the lamp go out. I saw that I should have to improve upon my lamp business, and concluded to work out the problem whilst taking my morning bath and breakfast. As I started towards the beach, I saw at a little distance to my left a huge turtle, the first I had seen, making for the sea. I ran with my utmost speed, and contrived to upset him upon his back before he had reached it, and soon dragged him to my fireplace, and, although still upon his back, for fear of any accident or escape, at once beheaded him then and there. I then quietly took off my clothes and had my usual bath, taking care, however, not to go out of my depth, as I saw several dog-fish sharks, and possibly larger ones of their species might be in the bay, but, from its shallowness, I did not much think it. Whilst bathing, I solved my problem about the lamps, and returned in good spirits to my fire and clothes, and soon had a nice turtle soup boiling and a steak of the same broiling upon the embers.
This turtle was a godsend, and was just what I needed to change my diet. I made a hearty meal, and with reluctance cut into the small piece of tobacco left me and filled my pipe, and had a short smoke, and then to work. I took two of my largest conch-shells, that would hold nearly a quart a-piece, and filled the lips up with my mortar that I had used the day before in the construction of the lamp-tower, leaving an orifice at the larger end, of sufficient size to pour liquid into easily, and one at the smaller end very small indeed. I then thrust both of the shells into the hot embers, and hardened the mortar or cement so that it was soon dry and compact. I then went to my grass-field and chose some minute grass-straws of about a foot in length, and inserted two in the small orifice of each shell, and fixed them in with moist cement. I then went to my lamp-tower, took the roof carefully off, and with a base of stones, and by means of twine with which I fastened them to the central stake, soon had my shells lashed and secured in an upright position, with the four straws pointing into the four clam-shell lamps. I then went with my bailer to the large sea-oyster shell and dipped up the oil that had distilled under the rays of the sun from the dog-sharks' livers, and in several trips filled my shell-reservoirs with oil, and had the satisfaction of seeing each straw dropping oil into the clam-shell lamp beneath. The dropping being rather fast, I easily regulated it by thrusting seaweed stoppers into the upper orifice of the shells till the feeding was very slow, but very perfect and exact. I felt now that I could leave my tower, days without care, and be sure of finding the lamps burning upon my return. I carefully replaced the roof, lighted the lamps again, and made all snug and secure. I did all this work about the lamps to make myself doubly sure of always having fire. I was well aware that with my hardened knife I could strike fire much better than I at first did with my shoe-nail, but I wanted to be sure and take every precaution, and to that end I went to work upon the nails in the boat-planking, and, finding one to my mind, I flattened it out at my anvil into a narrow ribbon of iron, which I hardened and steeled in the fire and water; and, after carefully testing it with my flint, which, by the way, I broke into several fragments, I put it and a piece of the flint into my pocket, and returned the remaining fragments with another nail, hardened and heated in the same manner, to the custody of the lamp-tower. I took thence a small quantity of the burned tinder I had made of my clothing, some of the nigger-ball powder, and cotton of the milkweed, and taking one of the numerous pods of last year's growth that I had gathered of these, and also stored there out of the rain, I split it lengthwise with my knife, and removed most of the core and cotton, and in its place inserted the tinder and powder that I have just mentioned, and secured the whole together by winding round about it some manilla twine; and, not satisfied with that, I cut a small piece from my flannel shirt and wrapped that also about it, and secured it with twine. Thus I carried on my person the means of starting a fire at any time; and, feeling secure, I allowed myself to throw this terrible fear off my mind.