.Fishing for Oil
A very valuable oil, for watches and fine machinery, is obtained from the blubber of the “blackfish”—which is really not a fish, but a species of small whale, attaining a length of 30 feet and weighing three tons or more.
THE average person, hearing of a “blackfish,” imagines it to be an ordinary fish, about the size of a herring. But there are many fish called “black-fish” and one of them (sometimes called the “pilot-whale”) is not a fish at all, but a mammal (a species of small whale). A full-grown blackfish averages 30 feet in length and weighs about 3 tons.
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