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Karshish, the Arab physician, has been journeying in quest of knowledge pertaining to his art, and writes to his all-sagacious master, Abib, ostensibly about the specimens he has gathered of medicinal plants and minerals, and the observations he has made; but his real interest, which he endeavors to conceal by passing to matters of greater import to him, as he would have his sage at home believe, is in what he pronounces “a case of mania, subinduced by epilepsy”. His last letter brought his journeyings to Jericho. He is now on his way to Jerusalem, and has reached Bethany, where he passes the night.