Note 272 — SCENE III.
Reading edition
There is no place oftener mentioned by the ancients than Thule, nor any one about the situation of which there has been a greater variety of opinions. Sir Robert Sibbald, in the additions to Camden, has given a discourse concerning the Thule of the ancients, in which the sentiments of different writers on this subject are considered, and many of them refuted. Camden supposes Shetland to be the place so often distinguished by the name of Thule; and Bishop Gibson appears to agree with him in the conjecture. See Camden's "Britannia." vol. ii. p. 411, edit. 1772.