Chapter XX.—The Worship of the Oak Pp. 349-375

§ 1. _The Diffusion of the Oak in Europe_—Jupiter the god of the oak, the sky, and thunder; of these attributes the oak is probably primary and the sky and thunder secondary; Europe covered with oak forests in prehistoric times; remains of oaks found in peat-bogs; ancient lake dwellings built on oaken piles; evidence of classical writers as to oak forests in antiquity; oak-woods in modern Europe.

§ 2. _The Aryan God of the Oak and the Thunder_—Aryan worship of the oak and of the god of the oak; Zeus as the god of the oak, the thunder, and the rain in ancient Greece; Jupiter as the god of the oak, the thunder, and the rain in ancient Italy; Celtic worship of the oak; Donar and Thor the Teutonic gods of the oak and thunder; Perun the god of the oak and thunder among the Slavs; Perkunas the god of the oak and thunder among the Lithuanians; Taara the god of the oak and thunder among the Esthonians; Parjanya, the old Indian god of thunder, rain, and fertility; gods of thunder and rain in America, Africa, and the Caucasus; traces of the worship of the oak in modern Europe; in the great European god of the oak, the thunder, and the rain, the original element seems to have been the oak.