an extemporaneous form of a medicine, soft, coherent, a little thicker than honey, and the quantity of which is a little morful or mouthful; for which reason it is by some called buccella.

Whatever is fit for internal use, either by itself, or when mixed with other substances, provided it is capable of the above mentioned consistence, is a proper material for the composition of a bolus. Such are soft substances more or less thick, as conveves, electuaries, robs, pulps, extracts; syrups and liquid substances, as oils, spirits, essences, elixirs, &c. The dose of bolus may be extended from one dram to one dram and a half, or two drams.