310 ESSAY ON CLASSIFICATION. 



moreover, was the first to recognize practically the in- 

 equality of all the divisions he adopts in his system ; and 

 this constitutes further a great and important step, even 

 though he may not have found the correct measure for 

 all his groups. For we must remember that at the time 

 he wrote, naturalists were bent upon establishing one 

 continual uniform series to embrace all animals, between 

 the links of which it was supposed there were no unequal 

 intervals. The watchword of their school was: Natura, 

 nonfacit saltum. They called their system la chaine des 

 tires. 



The views of Cuvier led him to the following arrange- 

 ment of the animal kingdom : 



CLASSIFICATION OF CUVIER. 1 



First Branch. ANIMALIA VERTEBRATA. 



CL. 1. MAMMALIA. Orders: Bimana, Quadrumana, Carnivora, Mar- 



supialia, Rodentia, Edentata, Pachyderniata, Rurniuantia, Ce- 



tacea. 

 CL. 2. BIRDS. Ord. Accipitres, Passeres, Scansores, Galliuje, Grallse, 



Palmipedes. 



CL. 3. REPTILIA. Ord. Chelonia, Sauria, Ophidia, Batrachia. 

 CL. 4. FISHES. 1st Series: FISHES PROPER. Ord. Acanthopterygii ; 



Abdoininales, Subbrachii, Apodes ; Lophobranchii, Plecto- 



gnathi; 2nd Series: CHONDROPTERYGII. Ord. Sturiones, Se- 



lackii, Cyclostonii. 2 



Second Branch. ANIMALIA MOLLUSCA. 



CL. 1. CEPHALOPODA. No subdivisions into orders or families. 



CL. 2. PTEROPODA. No subdivisions into orders or families. 



CL. 3. GASTEROPODA. Ord. Pulmonata, Nudibranchia, Inferobranchia, 



Tectibranchia, Heteropoda, Pectinibranchia, Tubulibranchia, 



Scutibranchia, Cyclobranchia. 



1 LeRegne animal distribue d'apres gone, compare his " Tableau elemen- 



son organisation; Paris, 1829, 2de taire," q. a., p. 307 ; his paper, q. a., 



edit., 5 vols., 8vo. The classes of p. 308 ; and the first edition of the 



Crustacea, Arachnids, and Insects, " Rgne Animal," published in 1817, 



have been elaborated by Latreille. in 4 vols. 8vo. 



For the successive modifications the 2 Comp. Regne Anim., 2de edit., 



classification of Cuvier has under- 2nd vol., pp. 128 and 383. 



