In three days' march we came to a river, which we saw from the hills, and which we called the Golden River; and we found it ran northward, which was the first stream we had met with that did so. It ran with a very rapid current, and our gunner, pulling out his map, assured me that this was either the river Nile, or run into the great lake out of which the river Nile was said to take its beginning; and he brought out his charts and maps, which, by his instruction, I began to understand very well, and told me he would convince me of it, and indeed he seemed to make it so plain to me that I was of the same opinion. But I did not enter into the gunner's reason for this inquiry, not in the least, till he went on with it farther, and stated it thus:--"If this is the river Nile, why should not we build some more canoes, and go down this stream, rather than expose ourselves to any more deserts and scorching sands in quest of the sea, which when we are come to, we shall be as much at a loss how to get home as we were at Madagascar?" The argument was good, had there been no objections in the way of a kind which none of us were capable of answering; but, upon the whole, it was an undertaking of such a nature that every one of us thought it impracticable, and that upon several accounts; and our surgeon, who was himself a good scholar and a man of reading, though not acquainted with the business of sailing, opposed it, and some of his reasons, I remember, were such as these:--First, the length of the way, which both he and the gunner allowed, by the course of the water, and turnings of the river, would be at least 4000 miles. Secondly, the innumerable crocodiles in the river, which we should never be able to escape. Thirdly, the dreadful deserts in the way; and lastly, the approaching rainy season, in which the streams of the Nile would be so furious, and rise so high--spreading far and wide over all the plain country--that we should never be able to know when we were in the channel of the river and when not, and should certainly be cast away, overset, or run aground so often that it would be impossible to proceed by a river so excessively dangerous.