Slavery as an industrial system

In most branches of knowledge the phenomena the man of science has to deal with have their technical names; and, when using a scientific term, he need not have regard to the meaning this term conveys in ordinary language; he knows he will not be misunderstood by his fellow-scientists. For instance, the Germans call a whale Wallfisch, and the English speak of shell-fish; but a zoölogist, using the ...