The Dutch studies and medicine developed by Otsuki Gensai and his life - what did his masters Genpaku and Ryosai think of him?

March 30th, 1827 (Bunsei 10) is the death anniversary of Otsuki Gentaku. In this period before the end of the Edo period, while culture and the arts flourished within Japan, there were also many scholars who sought new knowledge and turned to Dutch studies for answers. These were Sugita Genpaku and Maeno Ryōtaku, familiar figures from "Anatomy of the New Book." Otsuki Gentaku was nicknamed after these two men, and is a man of great achievement w…