11 CONTENTS. 



. II. RELICS or Extraneous Fossils. 

 Their Kinds. 



A. Conservata . . 1 



> definition of page 4 



B. Petrificata . . j 



Their Phenomena. 



A. General "| f~ 5 8 



B. Peculiar to Petrifactions V stated ^ 8-12 



C. . - to Conservata J L 12-14 

 Their Origin. 



A. Origin of Conservata ? slated f 14 



B. --- of Petrificata ) \ 15 

 Their Introduction into the Mineral Kingdom, - l6 



A. Periods of Introduction. 



First period "1 f ~~ 2 



Second . )> stated ^ 24 



Third . . J L 26 



B. Agents of Introduction. 



The Ocean . . "| their proba- f - 27 

 Ancient Lakes and Seas ble *&*? * I -32 



the introduc. 

 Eivcrs and modem Lakes f Ex(r 



Local inundations . j n t o the Min- 



Tlie general Deluge . J Kiugd. stated. l_ 37 



PRINCIPAL NOTES to Sect. II. 



Conservata generally considered as petrifactions The latter term used 

 only in a limited sense in the present work the distinction between con- 

 servata and petrilicata does not afford a principle of arrangement, p. 4. 

 Compressed or flattened extraneous fossils common to all laminated strata. 

 p. 6.- Vegetal and marine animal reliquia sometimes occur in the same 

 i-trata. p. 7.- Certain petrifactions most common in particular substances. 

 p. 9. Some remains of the substance of the original body to be traced in 

 most petrifactions, p. 11. Conservata sometimes found in ancient strata. 

 p. 12. Conservata found in veins, p. 14. Various opinions on the origin 

 of extraneous fossils, p. 15. -Various suppositions respecting the iutro- 



