(1) In the nineteenth century, the congius was used in British medicine and pharmacology as a name for the British Imperial gallon.(2) Some amphoras seem to be multiples of the choe, equivalent to the Roman congius .(3) But just when I thought it was going to get good and circular it turns out that a congius is roughly equal to six pints, and so a sextarius is one pint.(4) In Roman times the amphora was used as a unit of liquid measure containing 2 urnae, 8 congii , or 48 sextarii (the latter, equivalent to a pint).(5) During the fifth, sixth, seventh, and eighth months let them have a sextarius [about a pint] per day or five congii per month.
