188 $. V. PRINCIPLES OF 



Temporary (FamillcB temporales) contain tem- 

 porary species only ( v. species, inf. ) and are founded 

 on the detached parts of the originals, e.'g. Glosso- 

 pctrce, BufontttK, &c. Genus ICHTHYOLITHU& Li- 

 thopltylla, Carpolithi, &c. Genus PHYTOLITHUS. 



The SPECIES (Species) is a division of the jPa- 

 mily, or of the Genus. 



Species, in reliquia, are founded on the species of 

 plants or animals to which they owe their form. 



ONE SPECIES OF PLANT or ANIMAL can only give 

 form to one REAL or PERMANENT species of reli- 

 quium But, the detached parts of reliquia cannot 

 always, in the present state of our knowledge, be 

 referred to their real species species, for a time 

 therefore, must be divided into permanent and 

 genuine, or temporary and artificial f . 



f- The temporary or artificial species of reliquia, like the arti- 

 ficial classes of Plants, are sticcedaneums to the genuine and na- 

 tural ones (Artificiales classes succedanea sunt naturalium Phil. 

 Bot. p. 100.) adopted till a compleat knowledge of extraneous 

 fossils enable us to determine the genuine species, to which these 

 detached parts belong. 



Species are the fundamental parts of every system of natural 

 bodies Until what constitutes the species be determined, and the 

 principle, by which they are characterized, be distinctly ascertain- 

 ed, no arrangement, however ingenious or natural in its other divi- 

 sions, can prevent confusion the observation of C^SSALPINUS 

 on genera, will with the strictest propriety apply to species for, 

 confusis specie bus omnia confundi necesse est. 



As far as we are acquainted with the subject, this is the first 

 attempt that has been made to establish a natural and pennanen 



