Plastering and the hard finishing on the outside of the [Kirtland] temple have begun. Joseph is busy setting up the School of the Elders. He goes with Sidney Rigdon, Oliver Cowdery, and Frederick G. Williams to Willoughby College to hear a Dr. Piexotto lecture on physics. They learn that he will come to Kirtland to teach Hebrew.
[Conkling, Christopher J., Joseph Smith Chronology]