1º their nationality,

2º the manner in which they have become slaves (difference between extratribal and intratribal slaves, between native-born and newly-acquired slaves)[25],

3º the work imposed upon them (outdoor and indoor slaves, familia rustica and familia urbana).

What are the practical consequences of these distinctions?[26]

VII. Slave labour.

Slaves sometimes perform

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4º If some kind of work is performed by slaves only, what is its character? (Drudgery as opposed to noble work).

5º Is the work for which slaves are employed despised[27]?