本文是筆者於民國91年8月調閱台灣大學圖書館「田中文庫」所藏四冊 搖籃期刊本後，所做的調查報告。目的在以搖籃本書誌研究為方法，S己合此次 調查的結果，來鑑定四冊搖籃本的版本。「田中文庫」為台北帝大教授田中長 三郎的私人藏書，主要部分是田中1921年透過美國古書商代購的「Penzig 文庫」，多為植物、園藝學及農學資料。根據筆者的調查結果，四冊搖籃本 中，TANG20和TANG22的版本相當明確，而TANG26和TANG27的 印刷年則約在1500年左右或之後，而不若台大圖書館所登錄的那麼早。

＂Tanaka Collection＂ is the private collection of books of Tyozaburo Tanaka, Professor of Taihoku Empire University. The main part of the collection is the "Penzig Collection" containing many western antique printed books, originally belonged to the Italian botanist Prof. O. Penzig. In August 2002, the present author began to research on the four incunabula in the ”Tanaka Collection". The purpose of this paper is to identify the imprints of these incunabula using the method of incunabula bibliographical research. The author found that the imprints of TANG20 and TANG22 are very definite, while the print year of TANG26 and TANG27 are about or after 1500, later than the year registered in the catalogue of National Taiwan University Library.