Note 185 — Chapter XII · THE STONE OF HERCULES.
Reading edition
The ancients have described rocking-stones, but never called them “Baitula.”—See Apoll. Rhod. Argon. l. i.; Pliny, Nat. Hist. vol. ii. c. 28. For some amusing learning on the subject, see Moore’s Hist. of Ireland, vol. i. p. 39-59. See also Dissert. sur les Bætyles, Mém. de l’Académie, vol. vi.; Rem. de l’Abbé Bautier, vol. vii. p. 241.