Note 99 — Chapter X · THE YULE LOG
Reading edition
It is to be borne in mind that the oak was a sacred tree among the heathen Slavs; it was connected with the thunder-god Perun, the counterpart of Jupiter, and a fire of oak burned night and day in his honour. The neighbours of the Slavs, the Lithuanians, had the same god, whom they called Perkunas; they too kept up a perpetual oak-fire in his honour, and in time of drought they used to pour beer on the flames, praying to Perkunas to send showers.{10} The libations of wine on the Yule log may conceivably have had a similar purpose.