Isinglass is a substance well known in commerce, from its employment both in the arts and in domestic economy. It is the purest known form of animal jelly, and is obtained from the swimming bladder of a few kinds of fish, chiefly of the genus Sturgeon, the Acipenser of zoologists. This is indicated by some of its continental names, of which the English is no doubt a corruption;—thus, in German, Isinglass is called Hausenblase, from hausen the great sturgeon, and blase a bladder.

Thou shalt not suffer a witch to liue.

Coordinate term: AMA

All in all, the preparation of Seuils had put a nasty bug in my ear that was to bear all its fruit only ten years later—if bugs can bear fruit—and not without intermediate phases.