Sir Richard Francis Burton,
Ultima Thule; or, A Summer in Iceland…
“ Fourthly, the length of the day annexed to Thule: and, upon this account, it must be the country to the north and to the east of Ierne, by the verses of Juvenal before mentioned (V. Sat., xv. 112) .“Another property of Thule given by Tacitus (loc. cit.) is that about it is ‘mare pigram et grave remigantibus,’ which agrees indeed to the sea upon the north-east part of Scotland, but not{17} for the reason that Tacitus gives, i.e., for want of winds, but because of the contrary tides which drive several ways, and stop not only boats with oars, but ships under sail. ”
