bring in communication with each other. One of these difficulties
consisted in a passage between two lines of reef, that ran nearly
parallel for a quarter of a mile, and which were only half a
cable's-length asunder. There was abundance of water between these
reefs, but the difficulty was in the course, and in the narrowness of
the passage. Mark passed through the latter four several times, sounding
it, as it might be, foot by foot, and examining the bottom with the eye;
for, in that pellucid water, with the sun near the zenith, it was
possible to see two or three fathoms down, and nowhere did he find any
other obstacle than this just mentioned. Nor was any buoy necessary, the
water breaking over the southern end of the outer, and over the northern
end of the inner ledge, and nowhere else near by, thus distinctly noting
the very two points where it would be necessary to alter the course.

The second obstacle was much more serious than that just described. It
was a reef with a good deal of water over most of it; so much, indeed,
that the sea did not break unless in heavy gales, but not enough to
carry a ship like the Rancocus over, except in one, and that a very
contracted pass, of less than a hundred feet in width. This channel it
would be indispensably necessary to buoy, since a variation from the
true course of only a few fathoms would infallibly produce the loss of
the ship. All the rest of the distance was easily enough made by a
vessel standing down, by simply taking care not to run into visible
breakers.

Mark and Bob did not get back to the Rancocus until near three o'clock.
They found everything as they had left it, and the pigs, poultry and
goat, glad enough to see them, and beginning to want their victuals and
drink. The two first are to be found on board of every ship, but the
last is not quite so usual. Captain Crutchely had brought one along to