Note 1197 — Chapter XX · THE WORSHIP OF THE OAK
Reading edition
J. Grimm, op. cit. i. 157. Prof. E. Maass supposes that the identification of Donar or Thunar with Jupiter was first made in Upper Germany between the Vosges mountains and the Black Forest. See his work Die Tagesgötter (Berlin, 1902), p. 280.