Two forms of slavery in antiquity have almost monopolized the attention of most writers on the subject--domestic slavery and agricultural slavery; both lend themselves to sensational treatment; but along with these there was industrial slavery in all its forms; where we have free artisans, antiquity had slaves; and it is questionable whether the slaves employed by a great manufacturing firm in antiquity were less well off than the mill hands of a Lancashire town of today; in many industries they were possibly better off than the class of operatives who are “sweated” in East London; the slave of antiquity was at least provided with the necessaries of life by his employer. It is true that the slave operative could be bought and sold and even mortgaged; he could be bequeathed by will, but these mischances commonly happened to him collectively, and no more affected him individually than a change of owners affects the men working in an English manufactory; indeed, the slave had an advantage over the free artisan; he was part of the capital, his value was relatively greater, he occupied the place now taken by the machinery. A body of well trained, well organized slaves stood in much the same relation to capital in ancient times as the plant of a manufactory to the modern capitalist; and a new owner would no more have thought of disbanding or disabling the slaves employed in a publishing establishment, or brick works, than a modern owner would break up the machines in a cotton mill which he had acquired. When we read of the enormous number of slaves owned by some ancient millionaire, we must not think of butlers and grooms and footmen, but of clerks and “hands”; where we now say that such and such a capitalist employs so many thousand men, the ancients said that he owned so many thousand slaves.