Sentence:  [A] certain fisherman, after throwing his nets to no purpose, and beginning to be in despair, succeeded in catching a <WSD>jar</WSD> of brass. ... But presently there came out of the <WSD>jar</WSD> a vapour, and it rose up towards the heavens, and reached along the face of the earth; and after this, the vapour reached its height, and condensed, and became compact, and waved tremulously, and became an Ufreet (evil spirit), ... 
Meaning of the word marked with <WSD> tags:  An earthenware container, either with two or no handles, for holding oil, water, wine, etc., or used for burial. (from late 16th c.)