Note 442 — Chapter XXVI · THE CARBONIFEROUS PUYS OF SCOTLAND
Reading edition
A means of definitely placing some of these vents in the series of puy-eruptions is stated further on, at p. 476.
[443] Reference may again be made here to the remarkable similarity between the Scottish Carboniferous puy-vents and those of older Tertiary time in the Swabian Alps so fully described by Professor Branco in the work already cited p. 46. Denudation in that region has bared the cones and exposed the structure of the necks which, down to even minute details, repeat the phenomena of Carboniferous and Permian time in Scotland.