This textbook, the fourth in a series of six, is designed to give the intermediate elementary school student continued practice in reading Spanish. It contains some 30 sections with passages of increasing degrees of difficulty. Colored illustrations are included. In this volume, Quetzalcoatl, god of the winds, conducts a group of children to adventures by the sea, in outer space, and inside the earth. Excerpts from authors such as Cervantes, Lorca, and Horacio Quiroga are interwoven into the central story. (Author/SK)