Letter from 1816-1886 Isidor Kalisch;February 06, 1851 Two-page letter written by Isidor Kalisch from Cleveland, Ohio to an unknown recipient in Philadelphia, Pennsylvania on February 6, 1851. Kalisch discusses sending a copy of his first biblical-exegetical prelection and mentions a forthcoming second prelection of greater interest, focusing on the meaning of "heaven" and the biblical deluge, supported by scientific observation. He suggests the essays are suitable for publication. A portion of another essay by Kalisch on the mechanics of astronomical phenomena and the interpretation of the seven days of creation as epochs is also mentioned, and possibly included on the back of the letter. A reference to publication in *The Occident* is also present.