The Publishers desire to acknowledge the kindness of the Century Company, Ginn & Co., the J. L. Hammett Company, Harper & Brothers, the Houghton, Mifflin Company, the J. B. Lippincott Company, the Lothrop, Lee & Shepard Company, the Outlook Company, the Perry Mason Company, Charles Scribner's Sons, and others, who have granted permission to reproduce herein selections from works bearing their copyright.