Note C — VILLA GIULIA

“Ounce” was a mediæval measurement of running water, of which there were once as many varieties in Italy as there were provinces. Some of these are still in use. The Roman oncia d’acqua, or ounce of water, was practically equivalent to four times the quantity of water known as the California “miner’s inch.” This “miner’s inch” amounts to something like sixteen thousand gallons in twenty-four hours, and therefore the grant of two Roman “ounces” gave the Colonna the right to draw from the Fountain of Trevi eight times that amount, or one hundred and twenty-eight thousand gallons every twenty-four hours.