68 , III. DIST. CHAR. Mode. 



r/.) 31. Obducingf (obducens) when the matter of 

 the reliquium is spread over the surface of a 

 spurious nucleus. (37. ) 



33. Staining (fucans ) when the matter of the 

 reliquium is so incorporated with the matrix, 

 that the form of the original is only marked by 

 a stain,, or difference of colour, locally imparted 

 to the inclosing stone. 



e. ) 33. Nucleated (nucleatum) having an internal 

 nucleus. (36. 37. &c.) 



34. Empty (vacuum) without a nucleus, and 

 hollow. 



35. Solid, or full (refertum) neither hollow 

 nor nucleated- of the same substance and struc- 

 ture throughout. 



the NUCLEUS is an appendant part of the 



reliquium. (v. note f. page 54.) 

 f. ) 36. Genuine (verus) when moulded in a body 

 which was hollow in the recent state ( as a shell, 

 &c. ) The genuine nuclei always represent the 

 interior form and marks of the original bodies, 

 in which they have been formed 



37. Spurious ( spurius ) when moulded in a body 

 which has become hollow by decay (as the stem 

 of a plant, &c ) The spurious nuclei frequently 



f The obducing reliquia are very common among the petri- 

 fied stems of plants, which often exhibit tiie real substance of the 

 petrifaction, as a mere covering to the mass of stone forming the 

 nucleus. ,(v. page 62.) 



