PENC4ELLV rOSSILS OF DEVOK AKD CORNWALL. 



13 



Phillips, as President of the Geological Society of London, and also 

 one in Professor Haughtou's Appendix to the ' Yojage of the Pox 

 in the Arctic Seas.' Professor Phillips, when discussing the influ- 

 ence of ancient currents of the sea, remarks that " only a small pro- 

 portion of the fossils of North Devon occur in South Devon;"* and 

 Professor Haughton says, " I do not believe in the lapse of a long 

 interval of time between the Silurian and Carboniferous deposits, — 

 in fact in a Devonian period. 



" The same blending of corals has been found in Ireland, the Bas 

 Boulonnais, and in JJevonshire, where Silurian and Carboniferous 

 forms are of common occurrence in the same localities. "f 



It should be remembered that the statement with which we have 

 here to deal is, " that the blending of Silurian and Carboniferous 

 corals" (the word is not fossils) " is of common occurrence in Devon- 

 shire." 



I have consulted such registers as I have been able to command, 

 and have thrown so much of their contents as bear on the questions 

 before us in the following tabular form ; for which, of course, no 

 higher value is claimed than attaches to the original documents. 



The materials have been mainly derived from Professor JMorris's 

 ' Catalogue of British Possils,' published in 1854, in which are 

 embodied the results of the labours of Mr. Lonsdale, Professors 

 Phillips and M'Coy, and Messrs. Edwards and Haime. The liberties 

 taken with the ' Catalogue ' have been but few; such, for example, as 

 the removal of the Devonian Stromatopores from the class Zoophyta 

 to Amorphozoa, SphcB^^onites tessellatus from Echinodermata also to 

 Amorphozoa, and the addition of a few localities to those already 

 registered. 



I have great pleasure in acknowledging the prompt and kind assist- 

 ance of Mr. Salter, of the Geological Museum, Jermyn Street, Lon- 

 don, in certain matters on which I consulted him. 



Every geologist is, of course, aware of the numerous and elaborate 

 tables and ratios introduced by Professor Phillips in his ' Palaeozoic 

 Fossils of Devon and Cornwall,' when discussing questions akin to 

 those under consideration. In the preparation of this paper the 

 author has in no way made use of the valuable data these tables 

 contain. 



It appears from the three left-hand columns of figures, headed 

 " Totals," Table I., that, taken together, the five areas have yielded 

 three hundred and forty-seven species, belonging to ninety-seven 

 genera and forty-nine families, of nine classes of animals ; namely, 

 three classes of the sub-kingdom Kadiata, one of Articulata, and five 

 of Mollusca; hence fifteen of the twenty-four classes into which the 

 existing animal kingdom is commonly divided are totally unrepre- 

 sented in the series, as is the entire vegetable kingdom also. It 

 may be as well to state here that, in conformity with Morris's 



* Quarterly Journal Geol. Soc. vol. xvi. p. xl. 

 t ' Voyage of the Fox,' Appendix No. iv. p. 387. 



