106 
the extreme cold of an arctic winter. Like the present Indian 
species it possessed two horns, which, from the peculiar structure of 
the nasal bones, Cuvier concluded were both larger and more for¬ 
midable than in the existing animal. 
37 and 38. Equus plicidens, upper molar teeth. In these specimens 
the enamel is not quite so much plicated as in the teeth from 
Oreston, but No. 37, the first molar, shows the characteristic 
width of the anterior angle. Deposited by Dr. Blackmore. 
39 and 40. Fossil horse (Equus fossilis ), incisor teeth of young 
animal. Deposited by Dr. Blackmore. 
41 to 43. Upper molar teeth of young animal, showing in a very 
marked degree the greater length in an antero-posterior direc- 
tion as compared with breadth. Deposited by Dr. Blackmore. 
44 and 45. Upper molar teeth. Deposited by Dr. Blackmore. 
46. Portion of lower jaw, with first three molar teeth in situ 
(young animal). Deposited by Dr. Blackmore. 
47. Nearly right half of lower jaw, with four teeth ; the last tooth 
was just appearing above the gum when the creature died—it 
belonged to a young animal, about the same age as No. 46. 
Deposited by Dr. Blackmore. 
79. Portion of lower jaw, with three molar teeth (young animal). 
Presented by Mr. Jno. Harding. 
49 to 51. Asinus fossilis ? Series of upper molar teeth of large 
ass or small pony. Deposited by Dr. Blackmore. 
52. Upper molar tooth. Presented by Dr Fowler. 
54. Part of lower jaw, with three teeth. Deposited by Dr. 
Blackmore. 
48. Horse (Equus caballus ), series of upper molar teeth, of small 
size. Deposited by Dr. Blackmore. 
53. First upper molar of very old animal. Deposited by Dr. 
Blackmore. 
55 to 61. Lower molar teeth; No. 58 is three inches in length 
from grinding surface to root. Deposited, by Dr. Blackmore. 
62, Lower molar teeth. Presented by Mr. Harding. 
63 to 65. Lower molar teeth. Deposited by Dr. Blackmore. 
66 to 69. Upper molar teeth, small size. Presented by Dr. 
Fowler. 
70 to 73. Upper molar teeth. Presented by Dr. Fowler. 
75. Upper molar tooth, large size. Presented by Mr. J. Harding. 
74, 76, and 77. Upper molar teeth of large size. Deposited by 
Dr. Blackmore. 
78. Anterior portion of lower jaw of very old horse, containing 
the incisor, canine, and first molar teeth, on right side. Pre¬ 
sented by Mr. John Harding. 
