45^ 



ILLUSTRATIONS OF THE 



Note xxii. 



123 



Fojfil Bones, 



402. The remains of organifed bodies, at pre- 

 sent included in the folid parts of the globe, may- 

 be divided into three clafTes. The firll confifts 



P 



of the fhells, corals, and even bodies of fifh, and 

 amphibious animals, which are now converted 

 into flone, and make integrant parts of the folid 

 rock. All thefe are parts of animals that exift- 



ed before the ft 



of the prefent land, or 



even of the rocks whereof it confifts. Thefe re- 

 mains have been already treated of, and the evi- 

 dence which they furnifh muft ever be regarded 

 as of the utmoft importance in the theory of the 

 earth. The fecond clafs confifts of remains, 

 which, by the help of ftaladlitical concretions, are 

 converted into ftone. Thefe are the exuviae of 



anim 



fted on the very fame 



lis, which ex 

 nents oft which we now dwell, and are no doubt 

 the moft ancient among their inhabitants, of 

 "which any monument is preferved. In corapa- 

 rifon of the firft clafs, they muft, neverthelefs, be 

 confidered as of very modern origin. 



403. The third clafs confifts of the bones of 

 animals found in the loofe earth or foil ; thefe 



have not acquired a ftony charaa:er, and their na- 

 ture 



tuf^ 



al 



P 



to 



ear 



at! 



(here 



c 



] 



inger 



> 



a! 



P- 



404. 

 gener; 



tone: 

 edb 



aiattei 



iock( 

 Thel 



ber, ai 



are fc 



areth 



cataft 

 over\^ 



niulti 



hi 



e 



) 



ters 



^iiH 



