He translated the whole text of the Declaration of Independence and introduced it to Japan by printing it as 'The exhortation of independence of the 13 states in the US in July 4, 1716' in "Seiyo jijo" (first edition, Vol. II..)
またアメリカ独立宣言の全文を翻訳して『西洋事情』（初編巻之二）中に「」として掲載して日本に伝えた。