4 . II. RELICS. Phenomena. 



A. I. CONSERVATA are the mwatws of ani- 

 mals (. I. 1.) or vegetables (. I. 2.) preserved by 

 various operations of nature amongst minerals. (. 

 I. 4.) 



B. 2. PETRIFICATA are mineral bodies (f. 

 I. 4. ) which have, mediately or immediately, ft 

 received their form from animals (. I. 4.) or ve- 

 getables. (. I. 2.) 



THE Phenomena attendant on the reliquia are 

 either general or peculiar. 



being displaced by a mineral substance. The distinction, between 

 these two conditions or kinds of reliquia, should most carefully be 

 attended to, as it will be found of peculiar importance in geological 

 researches, to which a knowledge of these bodies immediately ap- 

 plies. 



The reliquia have usually been considered, particularly by the 

 German Naturalist, as petrifications. In the present work the term 

 petrification is used only in its more proper and limited sense. 



We have to observe, although they are thus primarily distin- 

 guished, that these two states or modes of extraneous fossils, by no 

 means afford a ground for their classification or arrangement ; this is 

 to be founded on other principles. Vide pt. 2. 



ft Mediately, when moulded in the hollow impression made in 

 the matrix by the original body. Immediately, when moulded in 

 the vacuities of the original body itself. 



ttt The object, which first claims attention in the study of Ex- 

 traneous, fossils, is the investigation of the phenomena attendant 



