Apparently no successful attempt has ever been made to prepare a complete and systematic bibliography of matrimonial institutions. Indeed, to do so would be a formidable undertaking; but that such a book would be of vast service to social history no one can doubt. Useful lists of authorities, however, are appended to the works of various writers, notably to Lubbock's _Origin of Civilization_; Starcke's _Primitive Family_; Chamberlain's _Child and Childhood_; Lehr's _Le mariage_; and especially Westermarck's _Human Marriage_. For marriage with kindred, including the deceased wife's sister, there is a good, though not exhaustive, bibliography by A. H. Huth in the _Report of the First Annual Meeting of the Index Society_ (London, 1879), 25-47; greatly enlarged in his _Marriage of Near Kin_ (2d ed., London, 1887), 394-465. Ethbin Heinrich Costa's _Bibliographie der deutschen Rechtsgeschichte_ (Braunschweig, 1858) is helpful, particularly for the earlier monographic literature. For supplementary materials, especially the curiosities of the subject, consult Hugo Hayn's _Bibliotheca Germanorum erotica: Verzeichniss der gesammten deutschen erotischen Literatur mit Einschluss der Uebersetzungen, nebst Angabe der fremden Originale_ (2d ed., Leipzig, 1885); the same writer's _Bibliotheca Germanorum nuptialis_ (Cologne, 1890); and the well-known _Bibliographie des ouvrages relatifs à l'amour, aux femmes, au mariage_, etc. (3d ed., 6 vols., San Remo, London, Nice, and Turin, 1871-73). Legal works on marriage and related institutions are included in Martin Lipenius's _Bibliotheca realis juridica omnium materiarum, rerum, et titulorum, in universo universi juris ambitu occurrentium, post F. G. Struvii et G. A. Jenichenii curas emendata ... et locupletata_ (2 vols., folio, Leipzig, 1757); but of much more service for the present purpose is the great work of J. F. von Schulte, _Die Geschichte der Quellen und Literatur des canonischen Rechts von Gratian bis auf die Gegenwart_ (3 vols., bound in 4, Stuttgart, 1875-80). Many recent publications are entered in George K. Fortescue's _Subject Index of the Modern Works Added to the Library of the British Museum in the Years 1880-1895_ (3 vols., London, 1886-97); while Poole's _Index_ contains the titles of more than 1,200 articles on various phases of the subject, including woman in her family relations. For topical analysis of the literature presented in this Bibliographical Index consult the critical and descriptive notes at the heads of the respective chapters. I. EARLY HISTORY OF MATRIMONIAL INSTITUTIONS Abercromby, John. "Marriage Customs of the Mordvins." _Folklore_, I, 417-62. London, 1890. Achelis, A. "Die Geschlechtsgenossenschaft und die Entwickelung der Ehe." _Zeitschrift der Gesellschaft für Erdkunde zu Berlin_, XXV, Heft 4. Berlin, 1890. Achelis, T. "Die Entwicklung der Ehe." _Beiträge zur Volks- und Völkerkunde_, II. Berlin, 1893.