In the nineteenth century, the congius was used in British medicine and pharmacology as a name for the British Imperial gallon. |
The principal Roman capacity measures were the hemina, sextarius, modius, and amphora for dry products and the quartarus, sextarius, congius, urna, and amphora for liquids. |
One metreta, a Greek measure, equalled about nine English gallons, and a congius contained about six pints. |
Some amphoras seem to be multiples of the choe, equivalent to the Roman congius. |
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. |
This is furnished with brazen buckets, each holding about a congius. |