After resigning the translator of the astronomical observatory the next year, he was mainly engaged in the translation of gunnery books and others and became the professor of Bansho shirabesho in 1856. 翌年、天文台役員の職を辞し、主として砲術書などの訳述に従い、1856年には蕃書調所の教授に迎えられた。 |