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Published online by Cambridge University Press: 01 May 2009
It has been for some time a matter of surprise to me that Dr. Holl, in his exhaustive memoir “On the Rocks of S. Devon and East Cornwall,”—after once raising the question “whether the limestones” (those of our present subject) “might or might not be the same as those of Ogwell, Ipplepen, and Dartington thrown over a broad anticlinal axis of the lower slates to the North-West,”1— should have ceased following out that line of thought to what appears to me the only possible issue, since he thoroughly recognized the existence of uniclinal structures in parts of the district.
page 410 note 1 Q.J.G.S. 1868, p. 442.
page 410 note 2 l.c. p. 443.
page 411 note 1 See also De la Beche, Geol. Report, p. 69.
page 411 note 2 Rosen, “Ueber die Natur der Stromatoporen,” p. 17 and woodcut.
page 412 note 1 Vide paper by the author, Geol. Mag. 1880, last par. p. 361.
page 412 note 2 The Gon. intumescens stage is classed by the German geologists as the commencement of the Upper Devonian.
page 412 note 3 l.c. p. 438.
page 413 note 1 This shifted continuation of the Pear Tree rock is omitted on the map.
page 414 note 1 l.c. p. 442.
page 414 note 2 l.c. p. 7.
page 414 note 3 l.c. table iii. p. 450.
page 414 note 4 Murchison, Siluria, p. 398; Salter, Q.J.G.S. 1863, p. 483.
page 415 note 1 These must not he confounded with the purple sandstones and slates of Cockington, Ockham, Beacon Hill, Windmill Hill, Southdown Cliff, etc., etc., which are of Upper Devonian age, doubtless the equivalents of the Pickwell Down sandstones of North Devon.
page 415 note 2 Prodrome d’une description géologique de la Belgique, 1880, p. 114.
page 415 note 3 Murchison and Sedgwick, Trans. Geol. Soc. 2nd series, vol. vi. pp. 241—244.
