. III. DIST. CHAR. Mode, 69 



present the external form of the bodies,, from 

 which they have been moulded, f 



g. ) 28, Invested ( vestitus ) covered by the reliquium 



in which it has been generated. 

 29. Bare (nudus) occuring without the reli- 

 quium. 



ft.) 30. Loose (liber} remaining in the rehquium, 

 but not attached to it f f moveable in its ca- 

 vity. 



31. Fixed (Jlxus) not moveable; entirely fil- 

 ling the cavity of the reliquium, but yet dis- 

 tinct and separable from it. 



32. Inseparable ( inseparability ) the substance of 

 the nucleus passing gradually info that of the 

 covering rtliquium, so as not to be distinctly 

 separable from it. ff f 



, f This will not be difficult to explain in the npurious nuclei of 

 vegetable bodies, to which these formations almost peculiarly be- 

 long. The external form and markings in the stems of plants, the 

 trunks of trees, &c. are always continued through the cuticle or 

 outer covering, and fixed in the cortex or exterior bark. 

 If, therefore, the substance of the vegetable, after being in- 

 closed in stony matter, be gradually removed, till the decay reaches 

 the cuticle, it is evident, the cavii\ then forced wiil impart to the 

 matter, afterwards introduced into it, t: e external appearance of 

 the original: and, that ihe cuticle, rerunning either in a recent or 

 changed state, and forming the true reliquium, will, in most cases, 

 be attached to the surface of the siuc eus thus generated. 



ft The matter of the nutieus hav ,ug been contracted by desic- 

 cation. 



ttf This takes place in some vegetable petrifaction, in which 

 the cavity, formed by the decay of the, interior matter of the ori- 



