146 



and from the posterior ones, the tips of the three mammillary processes 

 have been abraded : the surfaces are gradually blended together by attri- 

 tion towards the fore-part of the tooth, until the margin of the plate 

 presents a continuous transverse depression. 



Locality unrecorded. Mus. Parkinson. 



606. A lower molar of a Mammoth. The grinding surface, which is six inches 

 in length, includes ten transverse plates ; the two posterior ones exhibit 

 the abraded summits of five mammillary processes ; the three middle of 

 which are blended into one in the next two plates in advance, and this is 

 blended with the marginal lamellae in the remaining plates ; the enamel 

 is beautifully plicated in this specimen as in Nos. 566, 567 and 569. The 

 thick outer cement is longitudinally fissured at the projecting margin of 

 each transverse plate, and its surface is minutely wrinkled. 



Locality unrecorded. Mus, Parkinson. 



607- The anterior part of an upper molar of a Mammoth. The abraded sur- 

 face of the crown, which measures three inches and a half in length, 

 displays eight transverse plates ; the fourth presenting the summits of 

 the three principal divisions worn down to the same breadth ; in the fifth 

 plate the middle division is broader than the two marginal ones ; in the 

 seventh and eighth plate two of the mammillary eminences have their 

 summits abraded. 



From the drift of Halston Field near Stratford-on-Avon, Warwickshire. 



Hunterian. 



608. A lower molar of a Mammoth : it is nine inches long, and contains 



thirteen plates : the grinding surface, which is seven inches in length, 

 exhibits the summits of eleven plates, the enamel is strongly plicated. 

 Locality unrecorded. Mas. Parkinson. 



609. The lower molar of a Mammoth : it is eight inches long, and contains 



twelve plates : the grinding surface of the crown measures seven inches, 

 and exhibits the summits of eleven transverse plates. These differ from 

 the plates in the corresponding molar of the Asiatic Elephant, in being 

 more gradually dilated towards the centre, from which the large middle 

 maromilloid process is continued in the unworn grinders ; it also differs in 



