View of the killas rocks at the Gun Wharf Plymouth Dock

View of the killas rocks at the Gun Wharf Plymouth Dock, by John MacCulloch (1773-1835). The drawing accompanied a paper read before the Society on 6th December 1812, and published as: MacCulloch, J, On a peculiar Disposition of the Colouring Matters in a Schistose Rock, Transactions of the Geological Society, Series 1, vol 4 (1817), pp399-400. MacCulloch describes the picture thus: The general colour of the mass is a faint brown red, and a number of dove-coloured stripes of unequal thickness may be seen traversing it in very irregular curved lines, but bearing a sort of parallelism or relation to each other. To say that it resembles strongly a piece of marble paper, will be a comparison as illustrative as it is familiar. Watercolour on paper

1773-1835 1811 1812 1817 Colouring Comparison Curved Describes Disposition Faint Familiar Geological Illustrative Irregular Macculloch Peculiar Plymouth Relation Resembles Sort Strongly Thickness Thus Transactions Traversing Unequal Wharf

Features In These Collections

> Contributors > GSO

> The Geological Society