The day now returning, and with it my labours, I applied to my usual callings; but my mind ran strangely upon viewing the rock quite round, that is, the whole circuit of my dominions; for, thinks I, there may possibly be an outlet through the rock into some other country, from whence the persons I heard may come. As soon therefore as the days grew towards the longest, I prepared for my progress. Having lived so well at home since my settlement, I did not care to trust only to what I could pick up in the woods for my subsistence during this journey, which would not only take up time in procuring, but perhaps not agree with me; so I resolved to carry a supply with me, proportionate to the length of my perambulation. Hereupon considering that though my walk round the lake was finished in two days, yet as I now intended to go round by the rock, the way would be much longer and perhaps more troublesome than that was; remembering also my journey with Glanlepze in Africa, and how much I complained of the fruits we carried for our subsistence; these circumstances, I say, laying together, I resolved to load the cart with a variety of food, bread and fruits especially, and draw that with me. Thus provided, I sallied forth with great cheerfulness, and proceeded in the main easily; though in some places I was forced to make way with my hatchet, the ground was so over-run with underwood. I very narrowly viewed the rock as I went, bottom and sides, all the way, but could see nothing like a passage through it, or indeed any more than one opening, or inlet, which I entered for about thirty yards, but it was not above three feet wide, and terminated in the solid rock. After some days' travel (making all the observations I could on the several plants, shrubs, and trees which I met with, particularly where any of these occurred to me entirely new), finding myself a little faintish, I had a mind for a sup of ram's-horn juice; so I cut me one, but upon opening it found therein only a pithy pulp, and noways fit to taste. I supposed by this I was too early for the milk, it being three months later the last year when I cut them. Hereon, seeing one upon another shrub, which by its rusty colour I judged might have hung all the winter, I opened that, and found it full of milk; but putting some of it into my mouth, it was as sour as any vinegar I ever tasted in my life. So, thinks I (and said so too; for, as I told you before, I always spoke out), here's sauce for something when I want it; and this gave me a hint to store myself with these gourds, to hang by for vinegar the next winter.