Rev. Dr. Irving — Elevation of the Weald. 



403 



On tTie same and following pages I described two other teeth 

 (figured in plate xliii. figs. 5, 6 of the same memoir), which were 



Fig. 1. — Fourth left l lower premolar of Hycenodon indicus. \. 

 regarded as lower molars of a Carnivore. It was suggested that 

 these teeth might belong to Hycenodon indicus, in which event 

 that species would have to be transferred to 

 another genus. Subsequently, in the " Cat. 

 Foss. Mamm. Brit. Mus.," pt. 1, p. 32, fig. 2, 

 I described and figured an imperfect tooth 

 from the Quercy Phosphorites very similar 

 to the problematical Indian teeth, and which 

 was considered to indicate an allied form. 



Subsequent observations (for which I am 

 indebted to a friend) have shown that I 

 was totally mistaken in regai'd to the nature 

 of these teeth. They are really imperfect 

 upper carnassials of extinct Dogs, in which 

 the inner tubercle has been broken away, and 

 which I have figured the wrong way up- Fig. 2.— Inner and oral views 

 wards. This will be apparent from Fig. 2, of the imperfect right upper 

 which is a reproduction of the figure of the ^f*^ °i f Am P hm J (m 

 Quercy tooth now turned the right way up- 1- 



wards. The Quercy specimen belongs to Amphicyon ambiguus, 

 while the Indian teeth may be referred to A. palceindicus. 



Finally, it may be well to mention that I see no reason to alter 

 my opinion that the type of Hycenodon indicus (Fig. 1) indicates a 

 Creodont either generically identical with or very closely allied to 

 the Eocene species of Hycenodon. 



VII. — Note on the Elevation of the Weald. 



By the Rev. A. Irving, D.Sc. (Lond.), F.G.S. ; 



of "Wellington College, Berks. 



FEW students of Geology can doubt that the elevation of the 

 Weald has been the most important factor concerned in 

 determining the present surface-geology of the south-east of 

 England. It has been constantly before my own mind in all my 

 studies of Tertiary Geology for the last ten years, as the problem to 

 the solution of which many other preliminary questions required 



1 In the original figure it is wrongly described as of the right side. 



