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 —