J.D. Peacock replies: I am aware of the considerable contribution that Prof. Dawson and his co-workers have made to the elucidation of the Late Quaternary history of Islay, but I doubt that the evidence for their hypothesis, that the western part of the island and the Mull of Oa were ice-free during the Dimlington Stadial (DS), is sufficiently robust to refute the 'conventional' view that Islay lay within the Last Glacial Maximum (LGM) (22-26 ka bp).

I conclude that the whole of Islay was probably glaciated during the Dimlington Stadial, and that the last ice-sheet extended much farther to...

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