ETHEEIDGE DEVONIAN ROCKS AND FOSSILS. 575 



1846. De la Beche. — ''On the Pormation of the Eocks of South 

 Wales and South-western England, &c."* This remarkable memoir 

 enters fully into the question of the structure and succession of the 

 Devonian rocks of the West of England ; pages 65 to 105 are devoted, 

 with others, to their consideration. It is too long for more than 

 mere notice, and is replete with important matter. The author refers 

 to the labours of those who have investigated the structure of Xorth 

 and South Devon, especially Mr. Godwin-Austen, from whose re- 

 searches, and those of Prof. Phillips, the materials are largely di^awn. 



1848. Peach, C. TF.— " On the Possihferous Strata of part of the 

 South-east Coast of Cornwall" t- This paper has reference to sup- 

 posed fish-remains in the region mentioned, and is the first notice of 

 ichthyic remains in the Devonian rocks ; Onclius, and an Asterolepis 

 are stated to occur at Lentivet Bay and Pencarra. Many im- 

 portant facts are communicated in this notice. 



1848. Pattison, S.R. — " On an insulated patch of Devonian strata 

 in the parish of St. StejDhen by Launceston "J. Notice of the Yealm- 

 bridge flagstones and other rocks, with fossils from the Upper Devo- 

 nian beds, with a list of the few species found. 



1850. Pattison, S. B. — " On the Petherwyn Beds " §. This paper 

 contains a concise, but clear, description of the strata at Petherwyn, 

 their economical uses, relation to other deposits, and a copious list 

 of organic remains, compiled chiefly from Prof. Phillips's ' Palaeo- 

 zoic Fossils of Devon and Cornwall,' 1841. Mr. Pattison here men- 

 tions the coarse unfossiliferous sandstones that underlie the Upper 

 Devonian rocks in jS^orth Cornwall. I believe them to be the equi- 

 valents of the Pickwell Down sandstones in North Devon. 



1850. Pengelhj.—" On the Ichthyohtes of East Cornwall " || . An 

 important communication upon these obsciu"e, yet valuable, remains 

 at Looe Island and Harbour, St. Yeep, &c. Subsequent research has 

 revealed other and better specimens of the genus Onclius, &c., which 

 are now in the possession of Mr. Pengelly. 



1851. SeclgwicJc. — " On the Slate Eocks of Devon and Corn- 

 wall" ^. This paper is of great value, especially so as relating to 

 ConiwaU, the slates of which are correlated with those of Devon. 

 The position of the Petherwyn and Baggy Point, Marwood, and Barn- 

 staple beds are noticed here, and also the overlying Posidonia-shales 

 and limestones, with the succeeding Culm-measures. The results of 

 much physical research are given in this memoir. 



1853. Sharpe, D. — " Eeview of the Classification of the Palaeozoic 

 Formations, &c. &c." **. Much important matter is contained in this 

 paper, in which are compared the equivalent strata of Belgium &c. ; 

 reasons are given by the author for considering that much of the 

 so-called Devonian should be classed with the Carboniferous (or 



* Mem. Geol. Surv. of Great Britain, 1840. Vol. i. 

 t Koyal Geol. Soe. Cornwall, 35tli Annual Eeport, p. 57, 1848. 

 J Royal Geol. Soc. Cornwall, 35th Ann. Eep. p. 63. 

 § Royal Geol. Soe. Cornwall, Ann. Rep. 1850, p. 132. 

 II Royal Geol. Soc. Cornwall, Ann. Rep. 1850, p. 116. 

 ^ Quart. Journ. Geol. Soc. vol. viii. pp. 1-19, 1852. 

 ** Quart. Journ. Geol. Soc. vol. ix. p. 18. 



