t . III. DIST. CHAR, Soil. 179 



said to be filled ( impleta ) when the reliquium re- 

 mains in the impression Empty (vacua) when the 

 reliquium has been removed from the impression^. 



TERMS., 



distinguishing the reliquia according to their con- 

 nection with the soil. 



a.) 160. .Ancient (reliquia vetmta) forming a 

 part of the constituent matter of the strata 

 in the most ancient and ancient secondary 

 soils, (a. ISO.) 



161. Less ancient (vetula*) forming a part of 

 the constituent matter of the less ancient 

 secondary strata ff. (b. 131.) 



162. Modern (recentia) found in modern soils 

 (c. 132.) in which they appear to have been 

 originally imbedded. 



163. Very modern (recentissima) belonging to 



degree of hardness, necessary for the retention of the impressed 

 figure. It is certainly immaterial in this process, whether the im- 

 pression be received from a flat or rounded body : the formation 

 is still the same, and can only be considered as a part of the 

 matrix. 



f In many instances, the vacancy left in the matrix, by the 

 decay and gradual removal of the organic body, remains unfilled ; 

 no petrifaction being formed in it. 



it The less ancient reliquia may sometimes, also, occur in the 

 veins and Jtssures of the ancient and most ancient secon. soils 

 a. 130. 



