with the ways of the leviathans,
it might seem an absurdly hopeless task thus to seek out one solitary
creature in the unhooped oceans of this planet. But not so did it
seem to Ahab, who knew the sets of all tides and currents; and thereby
calculating the driftings of the sperm whale's food; and, also, calling
to mind the regular, ascertained seasons for hunting him in particular
latitudes; could arrive at reasonable surmises, almost approaching to
certainties, concerning the timeliest day to be upon this or that ground
in search of his prey.

So assured, indeed, is the fact concerning the periodicalness of the
sperm whale's resorting to given waters, that many hunters believe that,
could he be closely observed and studied throughout the world; were the
logs for one voyage of the entire whale fleet carefully collated,
then the migrations of the sperm whale would be found to correspond in
invariability to those of the herring-shoals or the flights of swallows.
On this hint, attempts have been made to construct elaborate migratory
charts of the sperm whale.*

*Since the above was written, the statement is happily borne
out by an official circular, issued by Lieutenant Maury, of
the National Observatory, Washington, April 16th, 1851. By
that circular, it appears that precisely such a chart is in
course of completion; and portions of it are presented in
the circular. "This chart divides the ocean into districts
of five degrees of latitude by five degrees of longitude;
perpendicularly through each of which districts are twelve
columns for the twelve months; and horizontally through each
of which districts are three lines; one to show the number
of days that have been spent in each month in every
district, and the two others to show the number of days in
which whales, sperm or right, have been seen."

Besides, when making a passage from one feeding-ground to another, the
sperm whales, guided by some infallible instinct--say, rather, secret
intelligence from the Deity--mostly swim in VEINS, as they are called;
continuing their way along a given ocean-line with such undeviating
exactitude, that no ship ever sailed her course, by any chart, with
one tithe of such marvellous precision. Though, in these cases, the
direction taken by any one whale be straight as a surveyor's parallel,
and though the line of advance be strictly confined to its own
unavoidable, stra