Note 73 — J. E. MARR, M.A., F.R.S. (continued 3)

For accounts of the Tremadoc Slates Fauna in England and Wales see Ramsay, A. C., Geology of North Wales, Appendix; Hicks, H., Quart. Journ. Geol. Soc., vol. XXIX. p. 39; Callaway, C., ibid. vol. XXXIII. p. 652, whilst many of the foreign fossils are noticed in Brögger's Die Silurischen Etagen 2 und 3 and Barrande's Faune silurienne des Environs de Hof en Bavière.