. III. DIST. CHAR. Mode. 67 



14. Cast, or moulded fredintcgratum) petrified 

 by redintegration, ( a. 6. ) or the renewal of the 

 external figure of the original, in the mould or 

 concavity of the matrix. 



15. Ingenerate (ingeneratum) produced by in- 

 tromission (b. 7.) or the introduction of the 

 mineral particles into the internal texture of 

 the original. 



16. Transmuted (trammutatum) petrified by 

 transmutation (c. 8.) or a perfect mineral 

 change in the original substance. 



c. ) 17. Compound ff (compost/ urn) when two or 

 more modes of change are discoverable in the 

 same specimen, either in the petrified or conser- 

 vated state. 



18. Semi-petrified ( semi-petrificatum ) imperfect- 

 ly petrified some part of the rdiquium remain- 

 ing in the conservated state. 



19. Doubly-petrified (duplicato-petrificatum) 

 when two modes of substitution are distinctly 

 apparent in the same specimen. 



20. Doubly-conservated ( dupUcato-conserva- 

 tum) when two modes of conservation are dis- 

 tinctly apparent in the same specimen. 



-ft The Compound petrified reliquia are perhaps more 

 common than those, which have been preserved by one sim- 

 ple mode of mineralization among the conservata, also, various 

 processes, or mixed modes of change, are frequently apparent, in 

 the same specimen, (v. note f page 40). 



