He also had an opportunity to observe the dissection of a dead body in Kozuka execution ground (Minamisenju, Arakawa Ward, Tokyo Prefecture) with Ryotaku MAENO, who happened to bring back the same medical science book from Nagasaki and Junan NAKAGAWA, and admired how accurate the anatomical chart of the book was.
偶然にも長崎から同じ医学書を持ち帰った前野良沢や、中川淳庵らとともに小塚原刑場（東京都荒川区南千住）で死体の腑分けを実見し、解剖図の正確さに感嘆する。