BOISSIER G. La religion romaine d'Auguste aux Antonins (2d ed., Paris, 1878).
RENAN, E. Influence of the Institutions, Thought and Culture of Rome on Christianity (London, 1880).
PRELLER-JORDAN. Romische Mythologie (Berlin, 1881-1883).
AUST, E. Religion der Romer (Munster, Westphalia, 1899).
WISSOWA, G. Religion und Kultus der Romer (Munich, 1902).
FOWLER, W. W. Roman Festivals of the Period of the Republic (London, 1899); Social Life at Rome in the Age of Cicero (New York, 1910); Religious Experience of the Roman People (London, 1911).
FRIEDLaNDER, L. Sittengeschichte Roms (8th ed., Leipzig, 1910); Eng. tr.
of 7th ed., Roman life and Manners under the Early Empire (London and New York ca. 1903).
GLOVER, T. R. Conflict of Religions in the Early Roman Empire (2d ed., London, 1909).
GRUPPE, G. Kulturgeschichte der romischen Kalserzeit (Munchen, 1903-1904).
CARTER, J. B. Religion of Numa (London, 1906); The Religious Life of Ancient Rome (Boston and New York, 1911).
REINACH, S. Orpheus [a general history of religions], chap. iii (Paris, 1909; Eng. tr., revised by the author, London and New York, 1909).
ARNOLD, E. V. Roman Stoicism (Cambridge, England, 1911).
_Etruscan_
HERBIG, G. Article "Etruscan Religion" (in Hastings's Encyclopaedia of Religion and Ethics).
_Celtic_
RHYS, J. Celtic Heathendom (London, 1886).
BERTRAND, A. Religion des Gaulois (2d ed., Paris, 1891).
IHM, M. Der Mutter-oder Matronenkultus und seine Denkmaler, _Bonner Jahrbucher_ (1887).
MACCULLOCH J. A. Religion of the Ancient Celts (Edinburgh, 1911); article "Celts" (in Encyclopaedia of Religion and Ethics); article "Druids," ibid.
GRUFFYDD, W. J. Welsh Literature (in article "Celt" in Encyclopaedia Britannica, 11th ed.).
QUIGGIN, E. C. Article "Celtic Languages and Literature," ibid.
ROBINSON, F. N. Article "Deae Matres" (in Encyclopaedia of Religion and Ethics).
Revue Celtique (Paris).
_Celtic Review_, Edinburgh.
_Teutonic_
GRIMM, J. Deutsche Mythologie (Berlin, 1835; 4th ed., 1875-1878); Kleinere Schriften (Berlin, 1864-1890).
MuLLENHOFF, K. Deutsche Altertumskunde (Berlin, 1870-1892).
BUGGE, S. Studier over de nordiske Gude-og Heltesagns oprindelse (1880); Germ. tr., Studien uber die Entstehung der nordischen Gotterund Heldensagen (Munich, 1889).
GRUPPE, O. Griechische Culte und Mythen in ihren Beziehungen zu den orientalischen Religionen, Index (Leipzig, 1887).
MOGK, E. Germanische Mythologie (in Paul's Grundriss der germanischen Philologie) (2d ed., Strassburg, 1898).
MEYER, E. H. Germanische Mythologie (Berlin, 1891).
GUMMERE, F. B. Article "Teutonic (or Germanic) Mythology" (in Johnson's Universal Cyclopaedia); Germanic Origins (New York, 1892).
LA SAUSSAYE, P. D. CHANTEPIE DE. Religion of the Teutons (with bibliography) (Boston and London, 1902).
CHADWICK, H. M. Article "Teutonic Peoples," p. 683 ff. (in Encyclopaedia Britannica, 11th ed.).
MANNHARDT, W. Baumcultus der Germanen und ihrer Nachbarstamme (Berlin, 1875); Antike Wald- und Feldkulte aus nordeuropaischen Uberlieferungen erlautert (Berlin, 1877); Mythologische Forschungen, _Quellen und Forschungen_ (1884).
JoNSSON, F. Article "The Eddas" (in Hastings's Encyclopaedia of Religion and Ethics).
VIGFUSSON, G., AND POWELL, F. YORK. Corpus Poeticum Boreale (Old Norse Poetry, Scaidic and Eddic) (Oxford, 1883).
THORPE, B. Metrical Translation of the Edda (London, 1866).
_Slavic_
Archiv fur slavische Philologie (Berlin, 1876- ).
MANNS, E. H. Article "Slavs," p. 230 (in Encyclopaedia Britannica, 11th.
ed.).
USENER, H. Gotternamen (Bonn, 1896).
KRAUSS, F. S. Slavische Folkforschungen (Leipzig, 1908).
MONE, F. J. Geschichte des Heidenthums in nordlichen Europa (Leipzig, 1836).
_Central and Northern Asia_
RATZEL, F. History of Mankind (Eng. tr., London, 1896-1898).