中国猿人制作及使用之石器,至民国二十年之时,始行发见。其后历年所发见之石器甚多,民国二十四年以前之采集品,曾由著者及法国史前学家步日耶(H.Bhouil)共同研究,写为专文,于民国二十六年时,准备出版。惟民国二十五年至二 Chinese ape-man production and use of stone, to the Republic of China twenty years ago, the first line of sight. Later, many stone tools were seen in the calendar year. The collected articles from the Republic of China twenty-four years ago were jointly studied by the author and the French prehistorist H.Bhouil and written as a monograph. In the twenty-sixth year of the Republic of China, When ready for publication. However, the Republic of China twenty-five years to two