CONTENTS. It 



Varieties, what page 196 



Specimens, what 196 



Enumeration of the various kinds of specimens 197 

 PRINCIPAL NOTES to Sect. V. 



Orders arbitrary divisions, p. 184. Natural and artificial divisions, what. 

 p. 184. Species the fundamental parts of every system the principle, 

 that one species of plant or animal can form but one genuine species of reliqui- 

 um, not before adopted in any system of extraneous fossils, p. 188. 

 Reasons for fixing on the parts enumerated, as the foundation of perma- 

 nent species, p. 190 193. 



i VI. PRINCIPLES OF NOMENCLATURE. 998-205 



Name of the c lass . . . . . 198 



Names of the order ..... 200 



of the genera .... 200 



of the families .... 202 



of the species .... 202 



Trivial name, what from what to be formed, 203 



PRINCIPAL NOTES to Sect. VI. 



Petrifact ions not to be separated from conservata in a systematic arrange- 

 ment of reliquia. p. 199. Insertion of the family name, between that of 

 the genus and species, when the original is unknown, recommended, p. 203. 

 Reason for using two words as the trivial name of a reliquium, of which the 

 original is known, p. 204. 



. VII. DELINEATIONS of Reliquia . 205 

 Elementary parts of the delineation 



Specific character, what ; mode of its construc- 

 tion . . . . . . 205 



The parts of the delineation appendant to the 



specific character enumerated . 208 

 Description, what . . . . 210 



The parts of the delineation appendant to the 

 the description . . . . 212 



Order of the delineation . . . . 212 



B 



