86 . III. DIST: CHAR. Prototype. 



Obs. Fossil plants are more common, considered 

 as a distinct tribe,, than the remains from the pre- 

 ceeding families ; but are rarely found in as perfect 

 a state. Trees and shrubs seldom preserve their fo- 

 liage when petrified; and among the conservata, the 

 leaves of trees, &C., are generally detached from the 

 stems. 



The petrified wood of trees is commonly found 

 in very recent seats (v. SOIL, seat, &c.) Their 

 leaves sometimes occur in modern, calcareous tracts. 

 Petrified plants in general, however, are most fre- 

 quent in argillaceous})^, with other vegetable reli- 

 quia. 



b. Parts 

 represented by reliquia are either animal or vegetable. 



A. 63. THE ANIMAL PARTS (Paries ani- 

 medium.} are either innate or fabricated. 



a. 64. INNATE ANIMAL p. (Paries animal, in- 

 natas ) are those parts of the body that have been 

 produced independently of any effort of the animal 

 and are either external or internal . 



Obs . Among the innate parts of animals, the bones 

 are the principal internal ones, that give their form 

 to extraneous fossils these constitute the skeleton* 

 which is peculiar to the four first classes of animals. 



erence oetween them to consist in the mode of budding, or in 

 the want of buds but observes, that with respect to trees and 

 shrubs, nature has placed no limits between them, except in the 

 opinion of the vulgar. 



