Especially in Kii Province he made extensive investigation and among its results there are "Suizoku-shi" which seems to be the first aquatic fauna in Japan and a pictorial book on conchology, "Sanzen Kai Zu."
特に紀伊国では広範囲に及ぶ調査を行い、その中には、日本で最初と見られる水産動物誌『水族志』、貝類図鑑『三千介図』がある。