Ainsworth, in his Latin Dictionary estimates the modius, when used for the measurement of grain, at a peck and a half our measure, which would make the Roman slave's allowance two quarts of grain a day, just double the allowance provided for the slave by law in North Carolina, and six quarts more per week than the ordinary allowance of slaves in the slave states generally, as already established by the testimony of slaveholders themselves.

Scius makes a practice of feeding them a modius of barley apiece for the month before they begin to breed, his purpose being to make them more productive.