ABSTRACT
The two books, “Hyakuchin-ikkan” and “Dr. Toukaku’s Houyo and it’s hearing”, have long been believed to have written by Toukaku Wada (A famous doctor in the Edo period). However, their medical recipes and the way they perceive disease were extremely different from those in Toukaku’s other publications. Interestingly, however, they closely resemble the contents of “Houyogei” written by Keiri Arimochi (also a famous doctor in Edo period). In this study, therefore, we set out to resolve this conundrum. We researched other books of Toukaku more deeply, but we were unable to find any commonalities between the two books in question and the other books of Toukaku. On the other hand, We found the name Dr. Kyourin multiple times in “Hyakuchin-ikkan,” and we posited that Kyourin was the real author of that book. Moreover, while we found Kyourin to be an alias of Keiri, there was no evidence of Toukaku being the Dr. Kyourin. In addition, we confirmed that “Toukaku’s Houyo” is the predecessor and model for Keiri’s one. We thus determined that both books, “Hyakuchin-ikkan” and “Toukaku’s Houyo and it’s hearing,” were based on the medical experiences of Keiri Arimochi and not those of Toukaku Wada.