Note 376 — Chapter V · THE RELIGION OF THE FOLK
Reading edition
Tille, Y. and C. 7, 148, suggests an Egyptian or Babylonian origin, but the equation of the Gothic Jiuleis and the Cypriote ἰλαῖος, ἰουλαῖος, ἰουλίηος, ἰούλιος as names for winter periods makes a Mediterranean connexion seem possible.