that the learning of language material may slow down 分布の安定にともない 言語の学習が
in 1849 shozan sakuma , a feudal retainer of the matsushiro clan and dutch scholar , planned to publish " doeff halma " at the expense of the clan or from his own expense for which he would give up his karoku (hereditary stipend ) under certain circumstances; he presented the lord of the clan with the report regarding strategy for expulsion of foreigners addressed to the lord of the clan , and emphasized the importance of disseminating the learning of language and technology for the purpose of opposing foreign countries . 1849年、松代藩士にて蘭学者の佐久間象山は藩費、場合によっては家禄を返上し費用に充てる覚悟で『ドゥーフ・ハルマ』を出版する計画を立て、藩主に「攘夷の策略に関する藩主宛答申書」を上奏して外国に対抗するために語学と技術習得を広める重要性を説いた。
