地学雑誌
Online ISSN : 1884-0884
Print ISSN : 0022-135X
ISSN-L : 0022-135X
大谷亮吉編著『伊能忠敬』の日本測量について
増村 宏
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ジャーナル フリー

1968 年 77 巻 1 号 p. 24-36

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The survey of the almost entire islands of Japan carried out by Tadataka INO (1748-1818) was a remarkable and successful enterprise in the history of Japanese cartography, and many biographies and biographical stories of INO have been published. However, among them “Tadataka INO” written in 1913 by Prof. Ryokichi OTANI (1875-1934) was the only one in respect to the scientific, authoritative and substantial point of view.
Prof. OTANI, as a physicist and geodesist, naturally devoted nearly two-thirds of his pages to the description of INO's method, instruments, the adjustment of his surveys and his method of map-construction, the accuracy of maps, etc. On the contrary, the description about his travels of survey is treated rather briefly and subjectively and, in consequence, there remain some criticism in his description from the strict historical point of view. For instance, OTANI pointed out some instances of scandals which occurred between lords of clans and INO's party in the survey of Echigo and Kaga, while he emphasised the friendly help of the feudal lord of Kagoshima, contrary to the expectation of some difficulty and hindrance in such a powerful clan.
The author analyzed these circumstances from many old documents and presented proper interpretation and also revealed that the INO's party changed its character and increased its importance after INO was appointed as an official of the Tokugawa Government in 1804.

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