. One was, that in order to be a pilot a man had got to
learn more than any one man ought to be allowed to know; and the other
was, that he must learn it all over again in a different way every
twenty-four hours.

That night we had the watch until twelve. Now it was an ancient river
custom for the two pilots to chat a bit when the watch changed. While
the relieving pilot put on his gloves and lit his cigar, his partner,
the retiring pilot, would say something like this--

'I judge the upper bar is making down a little at Hale's Point; had
quarter twain with the lower lead and mark twain {footnote [Two fathoms.
'Quarter twain' is two-and-a-quarter fathoms, thirteen-and-a-half feet.
'Mark three' is three fathoms.]} with the other.'

'Yes, I thought it was making down a little, last trip. Meet any boats?'

'Met one abreast the head of 21, but she was away over hugging the
bar, and I couldn't make her out entirely. I took her for the "Sunny
South"--hadn't any skylights forward of the chimneys.'

And so on. And as the relieving pilot took the wheel his
partner {footnote ['Partner' is a technical term for 'the other pilot'.]}
would mention that we were in such-and-such a bend, and say we were
abreast of such-and-such a man's wood-yard or plantation. This was
courtesy; I supposed it was necessity. But Mr. W---- came on watch full
twelve minutes late on this particular night,--a tremendous breach of
etiquette; in fact, it is the unpardonable sin among pilots. So Mr.
Bixby gave him no greeting whatever, but simply surrendered the wheel
and marched out of the pilot-house without a word. I was appalled; it
was a villainous night for blackness, we were in a particularly wide
and blind part of the river, where there was no shape or substance to
anything, and it seemed incredible that Mr. Bixby should have left that
poor fellow to kill the boat trying to find out where he was. But I
resolved that I would stand by him any way. He should find that he was
not wholly friendless. So I stood around, and waited to be asked where
we were. But Mr. W---- plunged on serenely through the solid firmament
of black cats that stood for an atmosphere, and never opened his mouth.
Here is a proud devil, thought I; here is a limb of Satan that would
rather send us all to destruction than put himself under obligations to
me, because I am not yet one of the salt of the earth and privileged to
snub captains and lord it over everything dead and alive in