It has been supposed that eleven and twelve are derived from the Saxon for one left and two left (meaning, after ten is removed); but there seems better reason to think that leven is a word meaning ten, and connected with decem.

To speak always in the same way, instead of saying that 6 does not contain 13, I say that it contains it 0 times and 6 over, which is merely saying that 6 is 6 more than nothing.

This is written 7 instead of 6, because the figure which is abandoned in the dividend is 9 (151).

This measure, and those which follow, are used for dry goods only.

It is more common to divide the ounce into four quarters than into sixteen drams.