[321.] Smith, W. R. Kinship and Marriage in Early Arabia. Cambridge, 1885.
[322.] Mannhard, W. Wald-und Feld-kulte. 2d ed. Berlin, 1905.
[323.] Helms, K. Altgermanische Religionsgeschichte. Heidelberg, 1913, I. Cf. 179, 93.
[325.] Ellis, H. Man and Woman. London, 1894. Cf. 4th ed., 1917.
CHAPTER XI—PROGRESS
[335.] Marvin, F. S., Editor. Unity of Western Civilization. London, 1915.
[336.] —— Progress and History. London, 1916.
[337.] —— The Living Past. 2d ed. Oxford, 1915.
[338.] Murray, G. Religio Grammatici. Boston, 1918.