Note 83 — J. E. MARR, M.A., F.R.S. (continued 3)
Reading edition
An account of the South Devon rocks by Mr Ussher will be found in the Quart. Journ. Geol. Soc., vol. XLVI. p. 487; from it the above classification of the rocks of S. Devon is taken.
Reading edition
An account of the South Devon rocks by Mr Ussher will be found in the Quart. Journ. Geol. Soc., vol. XLVI. p. 487; from it the above classification of the rocks of S. Devon is taken.