thou, perchance, tramping barefoot over the Riphaean mountains, instead
of being seated on a bench like an archduke on the tranquil stream of
this pleasant river, from which in a short space we shall come out upon
the broad sea? But we must have already emerged and gone seven hundred or
eight hundred leagues; and if I had here an astrolabe to take the
altitude of the pole, I could tell thee how many we have travelled,
though either I know little, or we have already crossed or shall shortly
cross the equinoctial line which parts the two opposite poles midway."

"And when we come to that line your worship speaks of," said Sancho, "how
far shall we have gone?"

"Very far," said Don Quixote, "for of the three hundred and sixty degrees
that this terraqueous globe contains, as computed by Ptolemy, the
greatest cosmographer known, we shall have travelled one-half when we
come to the line I spoke of."

"By God," said Sancho, "your worship gives me a nice authority for what
you say, putrid Dolly something transmogrified, or whatever it is."

Don Quixote laughed at the interpretation Sancho put upon "computed," and
the name of the cosmographer Ptolemy, and said he, "Thou must know,
Sancho, that with the Spaniards and those who embark at Cadiz for the
East Indies, one of the signs they have to show them when they have
passed the equinoctial line I told thee of, is, that the lice die upon
everybody on board the ship, and not a single one is left, or to be found
in the whole vessel if they gave its weight in gold for it; so, Sancho,
thou mayest as well pass thy hand down thy thigh, and if thou comest upon
anything alive we shall be no longer in doubt; if not, then we have
crossed."