"The present book is part of the translation of a study by Ōtsuki Nyoden, entitled Shinsen yōgaku nempyō ... (Revised chronological tables of western learning), published ... in the year 1927. It is a revised and considerbly enlarged edition of Nihon yōgaku nempyō, composed by the same author and signed Ōtsuki Shūji. This was printed in ... 1878 ... Although it was my intention to publish in this thesis the chronlogical tables from the beginning of the 18th century ... till 1829 ... it seems advisable to advance the date of my doctor's degree so that I am compelled to omit the ... tables from 1800 till 1829."-- Pref.