スギモト タケシ   Sugimoto Takeshi
  杉本 剛
   所属   神奈川大学  工学部 情報システム創成学科
    神奈川大学大学院  工学研究科 工学専攻(情報システム創成領域)
   職種   教授
言語種別 英語
発行・発表の年月 2020/04
形態種別 学術雑誌
査読 査読あり
標題 On Togai Ito's Codex of Maps and a Manuscript Originally Prepared by the Tokugawa-Shogunate Expediters to the Bonin Islands
執筆形態 単著
掲載誌名 Forma
掲載区分国内
出版社・発行元 Soc. Sci. Form
巻・号・頁 35(1),pp.3-8
概要 For the first time in 333 years Togai Ito's codex, two maps and a manuscript, is put on a scholar's test bench from Tenri Central Library. This codex derives from the original prepared by the Tokugawa-Shogunate expediters to the Bonin Islands in 1675. Two maps are the nautical chart between Japan proper and the Bonin Islands as well as the coastal chart of the Bonin Islands. The manuscript consists of the log of the ongoing journey, descriptions of island geography and natural history, the list of natural resources brought back to Edo, and the diary of the return journey. Results of the 1675 expedition are revisited at two aspects. One is discoveries of four islands on route (the first historic records). Another is presentation of living birds and bats at Shogun Ietsuna. All discoveries of the endemic are the first historic records. Astonishing is discovery of Purple Swamphen (now extinct).