Park, which shows the tendency of one civilization to accommodate itself to another, by assimilation of concepts, expressed in language and custom. For a study of the religion of the slave, however, the best of all the sources is that spontaneous, naive body of literature consisting of the slave-songs, sometimes called "spirituals," which were sung by individuals upon various occasions, and by shouting groups of religious enthusiasts. Krehbiel, who set many of these primitive verses to printed scales, made of them a psychological interpretation that has given the slave-mood. Colonel T. W. Higginson, the commander of a "black regiment" in South Carolina, during the Civil War, an eyewitness of many of the slave religious meetings, gives the circumstances under which a number of the "spirituals" arose. But Odum, in Volume III of the _Journal of Religious Psychology and Education_, makes of all the classes of slave-songs a psychological interpretation that is unsurpassed. The value of these collections is the common longing found therein, a burning enthusiasm to live in heaven. [3] In the preparation of this dissertation the following works were used: R. H. Nassau, _Fetichism in West Africa_, 1904; Mary H. Kingsley, _West African Studies_ (London, 1901); J. B. Earnest, _The Religious Development of the Negro in Virginia_ (Charlottesville, Va., 1914); H. M. Henry, _Slavery in South Carolina_ (Emory, Va., 1914); Ivan E. McDougle, _Slavery in Kentucky, 1792-1865_ (Reprinted from THE JOURNAL OF NEGRO HISTORY, vol. III, No. 3, July, 1918); H. A. Trexler, _Slavery in Missouri, 1804-1865, Being a Dissertation in Johns Hopkins University Studies_ (Baltimore, 1914); J. C. Ballagh, _Slavery in Virginia, Johns Hopkins University Studies, vol. XXIX, 1902_ (Baltimore); J. H. Russell, _Free Negro in Virginia, 1619-1865, Johns Hopkins University Studies, Series 31, No. 3_ (Baltimore, Johns Hopkins University Press, 1913); J. R. Brackett, _Negro in Maryland_ (Baltimore, 1889); G. H. Moore, _Slavery in Massachusetts_ (New York, 1866); R. Q. Mallard, _Plantation Life before Emancipation_ (Richmond, Virginia, 1892); Frances Anne Kemble, _Journal of a Residence on a Georgian Plantation in 1838-9_ (New York, 1863); C. G. Woodson, _The Education of the Negro Prior to 1861_ (New York, 1915); _The Journal of Negro History_, edited by C. G. Woodson, vols. I-IV, 1916-1919 (The Association for the Study of Negro Life and History, Inc., Washington, D. C.); Alcee Fortier, _History of Louisiana_, 4 vols. (New York, 1904); Code Noir, I (Published 1724); M. W. Jernegan, _Slavery and Conversion in the American Colonies_ (Reprinted from _The American Historical Review_, vol. XXI, No. 3, April, 1916); G. M. West, _Status of the Negro in Virginia during the Colonial Period_ (New York); L. A. Chamerorzow, _Slave Life in Georgia; Narrative of John Brown_ (London, 1865); B. T. Washington, _Story of the Negro_, 2 vols. (New York, 1909); _Baptist Annual Register_; A. N.