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. Roemische Mythologie (Berlin, 1881-1883).

AUST, E. Religion der Roemer (Muenster, Westphalia, 1899).

WISSOWA, G. Religion und Kultus der Roemer (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).

FRIEDLAeNDER, 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 roemischen Kalserzeit (Muenchen,
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 Muetter-oder Matronenkultus und seine Denkmaeler, _Bonner
Jahrbuecher_ (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).

MUeLLENHOFF, K. Deutsche Altertumskunde (Berlin, 1870-1892).

BUGGE, S. Studier over de nordiske Gude-og Heltesagns oprindelse (1880);
Germ. tr., Studien ueber die Entstehung der nordischen Goetterund
Heldensagen (Munich, 1889).

GRUPPE, O. Griechische Culte und Myt