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CLASS III. FOSSILS. 
I. PETRIFACTIONS. 
36. ZooLiTH : petrified Mammaliai 
37. Ornitholith: petrified Birds. 
38. Amphibiolith ; petrified Amphibia. 
39. Ichthyolith; petrified Fifties. 
40. Entomolith; petrified Infefts. 
41. Helmintholith: petrified Worms. 
42. Phytolith: petrified Vegetables. 
43. Graphoeith; petrified refemblanccs of other fub- 
ftances. 
II. CONCRETE. 
A. Natural. 
44. Calculus: concrete withih animal matter. 
45. Tartar: concrete within vegetable matter. 
46. Eagle-stone; concrete within ftones. 
B. Elementary. 
47. Pumice-stone: concrete in fire. 
48. Stlactite: concrete in air. 
49. Toph : concrete in water. 
III. EARTHS. . . 
A. Derivative. 
50. Ochre: metallic earth. 
B. Primitive. 
51. Sand: rough earth. 
52. Clay: plaftic earth. 
53. Calx: effervefeent earth. 
54. Soil; combuftible .earth. 
