Note * — Chapter XII · Trade, Manufactures, and Banking.

Without the Arabic system of numerals, elaborate bookkeeping surely presented a sober face to the Greeks. Their method of numeration was very much like that with the so-called Roman numerals.

[+] “Watching the moon,” i.e. the end of the month when the debts became due, appears to have been the melancholy recreation of many Athenian debtors. See Aristophanes’s Clouds, I. 18.