Octarius

The college take for their standard the exchequer wine measure of the realm, which they divide into the octarius or pint, the eighth part of a gallon; the fluid ounce, equal the sixteenth part[…]

[…] in one example at least, appears in the same pages of the same volume; therefore, should Fowler's solution be prepared from such an authority, is there not a chance of twelve ounces troy weight being substituted for the pint, or, what is now deservedly preferred, the octarius of the College here? - The technical excellence of the work high character of the author[…]

Olivae oleum, L. Olea Europæa, E. Olive oil. An octarius of which acts as a gentle laxative.

Many physicians even ordered the octarius (℥xx pint) when they intended the 16 oz. pint, to which they were accustomed in their youth […] Similar perplexities will occur with weights, if the terms, drachm, scruple, and grain be retained and the value depreciated, […]