In the Sargasso Sea by Thomas A. Janvier

That was the end of my visions. Through the night that followed -- my fever having run its course, I suppose -- I slept easily; and when another day came and I woke again my fever was gone. I was pretty weak and ragged, but the cut in my head was healing and no longer hurt me much, and my mind was clear. There still was water left in the jug, and I drank freely and felt the better for it; and toward afternoon I felt so hungry that I managed to get up and go to the pantry on a foraging expedition for something to eat.

This time I was careful not to stuff myself. I found a box of light biscuit and ate a couple of them; and then I filled my water-jug at the tank and brought it and the biscuit back to my stateroom without going on the deck at all. My light meal greatly refreshed me; and in an hour or two I ate another biscuit -- and kept on nibbling at them off and on through the night when I happened to wake up. In between whiles my sleep was of a sort to do me good; not deep, but restful. With the coming of another morning I felt so strong that I went to the pantry again for food of a better sort -- venturing to eat a part of a tin of meat with my biscuit and to add to my water a little wine; and when this was down I began to feel quite like myself once more, and to long so strongly for some sunshine and fresh air that I climbed up the companion-way to the deck.