Epispastics are medicines which blister or cause effusion of serum under the cuticle, such as Spanish flies, Burgundy pitch, rosin, and galbanum.
885. Errhines
Errhines are medicines which produce sneezing, such as tobacco, &c.
886. Escharotics
Escharotics are medicines which corrode or destroy the vitality of the part to which they are applied, such as lunar caustic, &c.
One that Goes Wrong may Mislead a Whole Neighbourhood.
887. Expectorants