Terreplein—The horizontal surface in rear of the parapet, on which guns may be mounted. Wormer—A double screw on the end of a rammer, used for extracting the wad or cartridge from a muzzle-loading gun. ★ U.S. GOVERNMENT PRINTING OFFICE: 1961 O-621672 NATIONAL PARK SERVICE Historical Publications _For sale by the Superintendent of Documents, U.S. Government Printing Office, Washington 25, D.C._ Interpretive Series Artillery Through the Ages, 35 cents. The Building of Castillo de San Marcos, 20 cents. America’s Oldest Legislative Assembly and Its Jamestown Statehouses, 25 cents. Popular Study Series Robert E. Lee and Fort Pulaski, 15 cents. Wharf Building of a Century and More Ago, 10 cents. Winter Encampments of the Revolution, 15 cents. Transcriber’s Notes —Silently corrected a few typos. —Added a Table of Contents —Retained publication information from the printed edition: this eBook is public-domain in the country of publication. —In the text versions only, text in italics is delimited by _underscores_. End of the Project Gutenberg EBook of The Building of Castello de San Marcos, by Albert C. Manucy