FOSSIL REMAINS FEOJI ATTOCK. 417 



the Medical College of Calcutta, and had assisted him in 

 editing the Catalogue of Fossils in the Museum of the 

 Asiatic Society. He died in 1857. — Ed.] 



' Found among Walker's papers two rough sketches — side 

 and plan. The one is evidently of a form closely allied to 

 Dinotherium. Oldham's specimens comprise two teeth, 

 both apparently three-ridged, considered by Walker between 

 Dinotherium and Diprotodon, the other regarded by him as 

 of Mastodon latidens, but evidently the same specimen as 

 Baker's drawing of the Attock tapiroid form from Lieut. 

 Garnett, Walker's sketch throws a new light on it. The 

 tooth (A), as m Baker's drawing, shows two ridges, both worn 

 and connected by means of a bridge. The middle molar (B) 

 shows three ridges, all much worn and confluent into a com- 

 mon disc; the third molar (C) shows only a single ridge, 

 slightly worn, the rest of it being apparently broken ofi". 

 From Baker's drawing I had formed the impression that the 

 last ridge of the middle molar (B) formed part of the tooth 

 (C) . But Walker's side-sketch draws the line of demarcation 

 very marked. It is very puzzling to say which is the anterior 

 molar and which the posterior. B is the most worn and 

 therefore the oldest tooth, and C is much less worn than A, 

 and therefore younger than it in appearance, i.e. later. The 

 distal (free) ridge of A appears to be more worn and to be 

 of wider transverse diameter than the prominent ridge (i.e. 

 that nearest the middle molar). Hence A is inferred to be 

 p.m. 4, or the last premolar ; B to be the first true molar, 

 m. 1, three-ridged ; and C the anterior ridge of the m. 2, or 

 the penultimate true molar. This is the reverse of the view 

 first taken by me from Baker's drawing, and from that which 

 was suggested to Owen by it.' 



[Dr. Falconer subsequently wrote to Col. Baker in Calcutta 

 for further information respecting the specimen, who on 

 Jan. 13, 1858, repKed to the following effect. — Ed.] 



' Your first impressions regarding the subdivision of the 

 fossil teeth, represented in my sketch, coincides with my own. 



Tooth B, in my opinion, consists of two ridges and termi- 

 nates at X. 



Tooth C extends from x to b". The mark at y, in Walker's 

 sketch, indicates his opinion that there existed on that line 

 a division between two teeth. I am qtiite certain that there 

 does not exist any external visible mark more distinct than 

 what is shown in my sketch.' 



VOL. I. E B 



