It is said that he completed the variorum adopting the research results of Western textual criticism which was not known at all to the Japanese people, especially those who were experts on classical Japanese literature, so he had to order the literature from abroad and studied it while he was making the variorum.
この校本完成までの作業は、それまで日本では、中でも国文学の世界では全く知られていなかった西洋の正文批判に関する研究成果を取り入れるため、文献を取り寄せて学びながらの作業であったとされている。