Insects that spring from grassy ground cannot soar as high as the birds of the air, nor can the living beings that inhabit the sea rise up heavenwards like the dragon. A man of medium abilities in music can never be a member of the Orchestra in the Halls of Chuen Tien, nor can the water-buffalo traverse the watery deeps to which even ships dare not venture. Hence, unless a person be of the highest understanding, it would be a hard task to converse with him intelligently of the "Wonders by Land and Sea." And I sigh because it is only the learned and intelligent man that can read understandingly the tales in this work. KWOH P'OH, Assistant Secretary and an Official of the 6th Rank, of the Tsin Dynasty. APPENDIX IV. A MEMORIAL PRESENTED BY LIU HSIU, BY ORDER OF HIS IMPERIAL MAJESTY THE EMPEROR, ON THE "BOOK OF WONDERS BY LAND AND SEA." The Memorialist, an officer of the Fourth Rank and Charioteer to His Majesty the Emperor, having received commands to comment upon and make right wonderful books, now reports that an officer named Wang, a subordinate in the Board of Civil Office, had already made comments and set right thirty-two chapters of the "Book of Wonders by Land and Sea," but which the memorialist has reduced to eighteen chapters. This book was compiled during the time of the three Emperors (Yao, Shun, and Yü). At that time there was a great flood, insomuch that the people had no places to live, but only in caves and holes in the rocks, and upon the tops of trees.