156 



cone. The original of this specimen is in the Museum at Moscow, 

 and has been figured and described under the name of "Dens Crocodili 

 seu Ichthyosauri Maximi." 



Presented by R. I. Murchison, Esq., P.G.S., 8fc. 



629. A small model of the tusk of a (male ?) Mammoth, which measured nine 

 feet, ten inches along the convexity of the double curvature, and twenty- 

 nine inches at its largest circumference near the base. 



The original was disinterred from a brick-field near Kingsland. 



Presented by William Clift, Esq., F.R.S. 



630. A section of the base of the tusk of the Mammoth, in a state of decom- 



position. 



From British drift or pleistocene beds. Hunterian. 



631 . A portion of the tusk of a Mammoth. 



Locality unrecorded. Mus. Brookes. 



632. A portion of the base of the tusk of a large Mammoth, much decom- 

 posed. 



From British drift or pleistocene beds. Hunterian. 



633. Portions of the outer basal lamellae of the tusk of a Mammoth. 



From the drift or pleistocene beds of Flintshire. Hunterian. 



633'. The outer basal lamellae of the tusk of apparently a recent Elephant : the 

 outer coat or cement is entire ; the dentine is in a state of decomposition. 

 The specimen was placed by Hunter by the side of the preceding speci- 

 men apparently to illustrate its nature. Hunterian. 



634. A fragment of a tusk of the Mammoth. 



Locality unrecorded. Hunterian. 



635. A tusk of a young Mammoth broken into four pieces, with a cast of its 



pulp-cavity in the clay matrix. 



The structure of the ivory, as visible to the naked eye, is well demon- 

 strated in this specimen. 



From British drift or pleistocene beds. Hunterian. 



