78 Proceedings of the Royal Physical Society. 



the crown is convex, the outer concave and sinuous, the ex- 

 tremities projecting into considerable points. A crescentic 

 enamel island lies in the centre of the tooth, the concavity of 

 which is turned towards the sinuous outer surface of the crown, 

 the extremities of the crescent project to the pointed extre- 

 mities of the outer surface. At the first glance, it might ap- 

 pear as if this tooth were too small for the cranium of so large 

 an animal as the great extinct Bos ; but it was found, on trial, 

 exactly to fill the empty socket of the corresponding tooth in 

 the large cranium of this species in the University Museum, 

 already described. On referring to the cranium which be- 

 longed to Dr Fleming, I found the corresponding pre-molar 

 tooth still in its socket, and presenting exactly the same ana- 

 tomical characters. 



The bones which I have obtained from the neighbourhood 

 of the town of Preston were found in the year 1836, by the 

 workmen employed in digging the foundations for the piers 

 of the railway bridge over the River Kibble. They were pre- 

 served by Mr Joseph Thornber, and by him presented to S. B. 

 Worthington, Esq., the engineer to the Lancaster and Carlisle 

 Railway, who deposited them in the Museum of the Lancaster 

 Mechanics' Institution. 



Mr Thornber, in a note which he has furnished me with, 

 states that the bones were found in a stratum of gravel and 

 sand beneath the peat. This stratum rested on a bed of new 

 red sandstone. One of these bones is an undoubted relic of 

 the Bos primigenius. It was found 26 feet 10 inches below 

 the surface. It consists of the left frontal bone, with the 

 horn-core still attached to it, and springing from the left 

 extremity of the great posterior ridge. The bone has evi- 

 dently belonged to a young animal, for it has separated from 

 the adjoining bones along the lines of the different sutures, so 

 that it could not have been permanently connected to them by 

 ossification. Its dimensions, also, are much less than those 

 of the corresponding bone in the adult crania, already de- 

 scribed, its length being only nine inches, and the circum- 

 ference of the root of the horn-core nine inches. The core is 

 much less tuberculated, and not so strongly grooved as in the 

 adult specimen. The other bones consist of a portion of the 



