^{page 81 note 1} In English by T. Mathiassen in Acta Archaeologica, XV, and here chapter xi, pp. 215–22.

^{page 81 note 2} Chapter xii, pp. 223–40, by C. J. Becker.

^{page 82 note 1} Chapter xi, pp. 181–8.

^{page 83 note 1} Chapter x, pp. 189–214, contains a very valuable list of similar place-names and an interpretation of the names Trelleborg and Trojborg by Gunnar Knudsen.

^{page 84 note 1} If we may add a minor desideratum, the indication of the exact limits of the excavated areas on the splendid plan plate LVII would have been a useful addition.

^{page 84 note 2} Biskupin has taught us how early in these regions the art of building defences in earth and wood was mastered.

^{page 84 note 3} For comparison with a Roman camp thearrangement of the barracks along four roads at right angles with four open courtyards in the Constantinian camp at Turnu Severin would have been a very instructive illustration.

^{page 85 note 1} Nørlund mentions himself the Slav marriages of Harold Bluetooth and of Sweyn Forkbeard.

^{page 85 note 2} New edition of Giraldus Cambrensis in Topographia Hibernie. Text of the first recension by O'Meara, John J., P.R.I.A. C. LII, 4, Dublin, 1949, p. 173Google Scholar: ‘dux Turgesius vocatus … totam incastellavit. Unde et fossata infinita alta nimis, rotunda quoque, et pleraque triplicia, castella murata et adhuc integra, vacua tamen et deserta. …’.