230 CRETACEOUS AND TERTIARY OUTLIERS. [vol. lxxix. 



of the Bovey deposits to the Aquitanian division of the Miocene. 

 He was interested to hear that the deposit at Petrockstow could 

 be correlated with the Bovey Beds. 



The Author, in reply, emphasized the fact that, so far as corre- 

 lation of deposits was concerned, the study of the petrology would 

 supplement, but in no way replace, the use of fossils. 



In reply to Prof. Watts, he expressed the opinion that, in view 

 of the general character of the petrology of the Permian deposits 

 of Devon, the coarser constituents were probably derived from the 

 apophyses of the earlier-exposed Cornish granite-masses rather than 

 from Dartmoor. 



The small outlier of Tertiary deposits of Bucldand Brewer 

 seemed to the Author at present to bear a closer resemblance to 

 the Eocene deposits of Devon than to the Cornish Pliocene, and 

 he felt that it would be equally as difficult (if not more so) to fit 

 them into Pliocene as into Eocene geography. 



[July 6th, 1923.] 



