1. Arkell , 1933, loc. cit., 391–2. A reference to the discovery of the Pebble Bed in the Westbury cutting could only be included as a footnote before going to Press.
2. 1927, loc. cit., 91 et seq., and 158–9.
3. Arkell W. J. , 1933, The Jurassic System in Great Britain, 393.
4. Description of G.W.R. Cutting at Westbury, Wiltshire;Proc. Bristol Nat. Soc.,1932
5. The Corallian Rocks of Oxford, Berks, and North Wilts;Arkell;Phil. Trans. Royal Soc.,1927