本論文係「庚辰（北大）本」七十一到八十回的版本研究。包括分析錯字之「音誤」與「形誤」，並探討「抄手」之身份；從漏抄及妄改試探「改者」對小說文本之了解；由故事內容之前後不一致推測「底本」之情況；指出一些批改用語的時代性以及辨明並無避諱字等。

This article is a study on the manuscript of volumes 71 to 80 of the “Geng-Chen" version of The Story of the Stone. The copyists' mistakes were analyzed and their identities were proposed. From the way of correction of mistakes the corrector's understanding of the novel was discussed. The inconsistency of certain contents was considered to give some clue to the origin of this version. The date of this version was discussed based on some terms with modern usages. The possibility of the use of a taboo character for Prince Yi was ruled out.