Then follows a list of letters and other documents accompanying the "Memorial," several of which are presented in our text. On the right hand is written: "Filipinas Islands, city of Manila, assembly of April 19, 1586. Royal Audiencia, judiciary, and magistracy. Bishop and clergy. Orders, and religious and ecclesiastical estate. The master-of-camp, captains, and soldiers, and the secular estate. The person who should come: Father Sanchez." Other memoranda refer to various letters from Philippine officials, dated during the years 1583-86, which seem to have been consulted in reference to the "Memorial."] [In the library of Edward E. Ayer, Chicago, is a collection of MSS., transcripts from documents in Spanish archives, which were made during the years 1859-65 by a Spanish official at Madrid, who had been in the Philippine Islands, named Ventura del Arco: it has been kindly loaned to us by Mr. Ayer for use in the present work. This series, in five volumes, large octavo size, contains some 3,000 pages of matter regarding these islands, from the original MSS. in the archives; some is copied in full, but often a synopsis only is given. To many of the documents are added tracings of the original autograph signatures. Although spelling, punctuation, and capitals are considerably modernized, the work of transcription appears to have been otherwise done carefully, intelligently, and _con amore_; and the collection contains much valuable material in Philippine history. It covers the period of 1586-1709, and begins with the proceedings of the junta of 1586, which are found in vol. i, pp. 1-101. The "Memorial" is given in a full resumé; and at the end is cited (pp. 48-49) the following paragraph, which is not contained in our Sevilla copy, or in that of the Madrid MS. which we have followed:]