例言:四年前,窃不自量,欲整理本国天算之学;先从调查书目入手, 因录成天文算学书目汇编一种,自便检查而已。中分五门:(一)丛书, (二)算学书,(三)天文历法书,(四)杂著,(五)人名索引。今从李乐知君 之命,抽取第二门,先行付印;其他各门中之专关算学者,已择要归并。 此固不足以言编 Example: Four years ago, I was afraid to steal from myself and would like to organize my own school of day-to-day calculations. I started with a survey of bibliographies and compiled a catalog of astronomical and computational bibliographies for self-examination. In five points: (a) series, (two) arithmetic books, (three) astronomical calendar, (four) miscellaneous, (e) name index. Now, from the command of Li Le, you can take the second door and print it first. The other specialists in all the different fields have chosen to be merged. This solid enough to make up