Note 380 — Chapter XLV · THE ACID ROCKS
Reading edition
The admirable Map and Memoirs of Desmarest on Auvergne are classics in geology. Scrope's work, vol. i. p. 45, gives still the best published account of this district. See also the work of Lecoq (ibid.). The results of more detailed petrographical research regarding the rocks will be found in the essays of M. Michel Lévy (Bull. Soc. Géol. France, 1890, p. 688) and in the Clermont sheet of the Geological Survey Map of France (Feuille, 166). A bibliography of the district up to the year 1890 is given in the volume of the Bull. Soc. Géol. France just cited, p. 674.