1.Objective: To establish a method suitable to determine the purgative biopotency of rhubarb and construct a new quality evaluation pattern of rhubarb.
2.There was an aspect of it which he sometimes enjoyed, an excitement, a purgative effect upon sluggish emotions, but he was far from fond of risking his life.
3.Aristotle, as every one knows, saw in pity a sickly and dangerous state of mind, the remedy for which was an occasional purgative: he regarded tragedy as that purgative.