1927. This work contains Books One, Two and Three of the original volumes. They represent a textbook on the sciences of enumeration, intended for personal study or for classroom use by both teacher and student. Book I introduces the reader to the subject matter in its more simple forms and its applications. Book II is designed to enable the reader to analyze others and to help them, thereby increasing your own knowledge and ability to order your life. Book III enables you to know and apply some of the deeper phases of group psychology, and to answer some of the questions of the more educated minds.