His representative works include "Overview of Chinese History" (1880-1890, three volumes, published by Iwanami bunko: although it is an unfinished work, the book was read also in China due to its concise and objective style), and 'Study of Ancient Calendar' (presented for "History Journal" and collected in "Study of Ancient Calendar," revised book compiled by Kagehide MISHINA), a paper that studied about the Japanese calendar systems base on 'Shinyu-kakumei-setsu' (a prediction of revolution in Kanototori of the Chinese astrological calendar).
代表的な著作としては中国史の通史である『支那通史』（1888年-1890年、未完であるが、簡易かつ客観的であったことから中国でも読まれた、岩波文庫全3巻）や、「辛酉革命説」に基づいて日本の紀年問題を研究した「上世年紀考」（『史学雑誌』発表、三品影英増補『上世年紀考』所収）がある。