246 FROM THE GREEKS TO DARWIN 



of filiation, or the idea of the branching {em- 

 branchement) of life, had not been reached in 

 1802, in which year he gives a vertical scale of the 

 succession of groups of animals quite similar to 

 that which had been developing on the false con- 

 ception of phylogeny from the time of Aristotle. 

 It is interesting, therefore, to place, side by side, 

 his first scale of 1802 with that of 1809 below, 

 also with the progressive table of 1815 {Histoire 

 Naturelle). 



Une colonne vertebrale, faisant la base 

 d'un squelette articule. 



TABLEAU DU RfiGNE ANIMAL (1802) 



MONTRANT LA DEGRADATION PROGRESSIVE DES OrGANES 



Speciaux jusqu'a Leur Aneantissement 



Nota. — La progression de la degradation n'est nulle part 

 reguliere ou proportionnelle; mais elle existe dans Tensemble 

 d'une maniere evidente. 



1. Les Mammaux 



2. Les Oiseaux 



3. Les Reptiles 



4. Les Poissons 



5. Les Mollusques 



6. Les Annelides 



7. Les Crustaces 



8. Les Arachnides 



9. Les Insectes 



10. Les Vers 



11. Les Radiaires 



12. Les PoljT)es 



Point de colonne vertebrale; point de 

 veritable squelette. 



