I entered, with all the boys referred to and many others, the Academy of Mark and Matthew Howe, then well established, and of great reputation,--and deservedly so. The schoolrooms were large, and furnished with desks and chairs, an improvement upon the old benches with boards in front. The course of studies mapped out for me was much the same as I pursued at Mount Vernon, with a specialty of the first six books of Euclid, and of algebra. Latin was taught but little. From the first, arithmetic, algebra and surveying were my favorite studies, and in those I became proficient. We had an improvised theatre in which we acted plays and made speeches. When I entered the school Matthew Howe was the regulator, teacher and dominie. He was the supreme autocrat, from whom there was no appeal. All the boys respected him, for he certainly was a good teacher, but they did not like his domineering way. I got along with him pretty well for some months, but one day after I had mastered my lessons I rested my head on my desk when I was sharply reproved by him. I said that I did not feel very well and had learned my lessons. He called me to the black-board and directed me to demonstrate some problem in my lesson of Euclid. I went, and, as I believed, had made the drawing and demonstrated the problem. He said I had not, that I had failed to refer to a corollary. I answered that he had not required this in previous lessons. Some discussion arose, when, with the ferule in his hand, he directed me to hold out mine. I did so, but as he struck my right hand, I hit him with all the force I could command with my left. This created great excitement in the school, all the students being present, my brother Tecumseh among them. It was said at the time that the boys were disposed to take sides with me, but I saw no signs of it. The result was that I was expelled from the school, but, by the intercession of my mother, and Mrs. Reese, after explanations, I was restored, and during my two years with Mr. Howe I had no other contention with him. He moved some years later to Iowa, where he established another academy, and lived a long and useful life. We had friendly correspondence with each other, but neither alluded to our skirmish over a corollary in Euclid.