先にFBに紹介したブログの材料
画像は1898年に出版されたイザベラ・バードの”Korea and her neighbors” 14頁のコピー。1894年に訪れた朝鮮についての紹介だ。
「日本海」the Sea of Japanは普通に使われる表記であったし、紹介される朝鮮の範囲は鬱陵島*1まで（竹島*2は範囲外）である。
書籍に付属している地図も下記に掲載した。
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The geography of Korea, or Ch'ao Hsien ("Morning Calm," or "Fresh Morning"), is simple. It is a definite peninsula to the northeast of China, measuring roughly 600 miles from north to south and 135 from east to west. The coast line is about 1,740 miles. It lies between 34°17′N. to 43°N. latitude and 124°38′E. to 130°33′E. longitude, and has an estimated area of upwards of 80,000 square miles, being somewhat smaller than Great Britain. Bounded on the north and west by the Tu-men and Am-nok, or Yalu, rivers, which divided it from the Russian and chinese empires, and by the Yellow Sea, its eastern and southern limit is the Sea of Japan, a "silver streak," which has not been its salvation. Its northern frontier is only conterminous with that of Russia for 11 miles.
https://archive.org/stream/koreaherneighbor00bird#page/14/mode/1up/search/Japan
archive.org/stream/koreaherneighbor00bird#page/n20/mode/1up
ご参考：
