The book consists of 30 volumes in total, and of these, 16 volumes (volume 2 to 6 and volume 20 to 30) are extant, and abridged transcripts of volume 1 and volume 7 to 14 have also survived.
全30巻より成り、このうち巻二～六、巻二十～三十の計16巻と、巻一及び巻七～十四の抄記が現存する。