^{page 352 note 1} In supposing that, so soon as it has a tendency to float, the glacier breaks off into bergs from the rise and fall of the tide, Mr. Geikie seems to me to have overlooked the fact that in such deep water and open sea as that in which the Antarctic ice terminates, the vertical movement of the tide is altogether insignificant. It is to the Antarctic, rather than the Arctic regions, that we must turn to find the ice conditions of our Glacial period.

^{page 354 note 1} Besides the observations as to the position of the Bridlington bed in the Crag Supplement Introduction, and in various papers of mine in this Magazine, the respective horizons of the Bridlington bed and of Dimlington Cliff base will be found marked in my vertical section of the Glacial sequence of the East side of England, at page 90 of vol. xxvi. of the Quarterly Journal of the Geological Society.