EXPLANATION OF THE PLATES. 
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8. ‘iTwo views of a molar tooth of hippopotamus not at all worn 
9. ) down. 
10. Molar tooth of hippopotamus, having the summits of the 
crown worn down. 
Plate VIII. 
1. Posterior molar tooth of the lower jaw of an ox. 
2. Crown of No. 1. 
8. Posterior molar tooth of the right lower jaw of a species of deer. 
4. Molar tooth of the upper jaw of an ox. 
5. Molar tooth of the lower jaw of a calf. 
6. Side view of No. 5. 
7. Molar tooth of the upper jaw of an ox. 
8. Outside view of No. 7. 
9. Molar tooth of the upper jaw of a very large species of deer, 
equalling in size the largest elk, but differing in form. 
10. Outside view of No. 9. 
11. Molar tooth of the upper jaw of a second species of deer, 
equalling in size the largest red deer. 
12. Outside view of No. 11. 
] 3. ) Inside and outside views of a rising molar tooth of a third 
14. \ species of deer, of the size of a large fallow deer. 
Plate IX. 
1. Outside view of a molar tooth of the lower jaw of a large 
species of deer. 
2. Inside view of No. 1. 
3. Base of the horn of a large deer, measuring nine inches and 
three-quarters in circumference, which corresponds exactly in size 
