The Sumerians were a non-Semitic, non-Indo-European people who flourished in southern Babylonia from the beginning of the fourth to the end of the third millennium B. C. During this long stretch of time the Sumerians, whose racial and linguistic affiliations are still unclassifiable, represented the dominant cultural group of the entire Near East. This cultural dominance manifested itself in three directions: 1. It was the Sumerians who developed and probably invented the cuneiform system of writing which was adopted by nearly all the peoples of the Near East and without which the cultural progress of western Asia would have been largely impossible. 2. The Sumerians developed religious and spiritual concepts together with a remarkably well integrated pantheon which influenced profoundly all the peoples of the Near East, including the Hebrews and the Greeks. Moreover, by way of Judaism, Christianity, and Mohammedanism, not a few of these spiritual and religious concepts have permeated the modern civilized world. 3. The Sumerians produced a vast and highly developed literature, largely poetic in character, consisting of epics and myths, hymns and lamentations, proverbs and "words of wisdom." These compositions are inscribed in cuneiform script on clay tablets which date largely from approximately 1750 B. C. In the course of the past hundred years, approximately five thousand such literary pieces have been excavated in the mounds of ancient Sumer. Of this number, over two thousand, more than two-thirds of our source material, were excavated by the University of Pennsylvania in the mound covering ancient Nippur in the course of four grueling campaigns lasting from 1889 to 1900; these Nippur tablets and fragments represent, therefore, the major It is the utilization of this vast quantity of unpublished Sumerian literary tablets and fragments in the University Museum, approximately 675 pieces according to my investigations, which will make possible the restoration and translation of the Sumerian literary compositions and lay the groundwork for a study of Sumerian culture, especially in its more spiritual aspects; a study which, considering the age of the culture involved, that of the third millennium B. C., will long remain unparalleled for breadth of scope and fullness of detail. As the writer visualizes it, the preparation and publication of this survey would be most effective in the form of a seven-volume series bearing the general title, Studies in Sumerian Culture. The first volume, the present Memoir, is therefore largely introductory in character; it contains a detailed description of our sources together with a brief outline of the more significant mythological concepts of the Sumerians as evident from their epics and myths. The five subsequent volumes, as planned by the author, will consist primarily of source material, that is, they will contain the transliterated texts of the restored Sumerian compositions, together with a translation and commentary as well as the autograph copies of all the pertinent uncopied material in the University Museum utilized for the reconstruction of the texts. Each of these five volumes will be devoted to a particular class of Sumerian composition: (1) epics; (2) myths; (3) hymns; (4) lamentations; (5) "wisdom." It cannot be too strongly stressed that on the day this task is completed and Sumerian literature is restored and made available to scholar and layman, the humanities will be enriched by one of the most magnificent groups of documents ever brought to light. As the earliest References and Notes to the original edition will be found on page 104. Supplementary Notes and Corrections will be found on page 120.