300 



THE INDUCTIONS OF IJIOLOGY. 



But though Cuvier emancipated himself from the concep 

 tion of a serial progression throughout the Animal- King 

 dom ; sundry of his contemporaries and successors remained 

 fettered by the old error. Less regardful of the differently- 

 co-ordinated sets of attributes displayed by the different sub- 

 kingdoms ; and swayed by the belief in a progressive develop 

 ment, which was erroneously supposed to imply the possibility 

 of arranging animals in a linear series ; they persisted in 

 thrusting organic forms into a quite unnatural order. The 

 following classification of Lamarck illustrates this. 



INVEBTEBKATA. 



I. APATHETIC ANIMALS. 



CL. 

 CL. 

 CL. 

 CL. 

 CL. 



1. 

 2. 

 3, 



INFUSORIA. 

 POLYPI. 

 E ADI ARIA. 



4. TUNICATA. 



5. YERMES. 



II. SENSITIVE ANIMALS. 



6. INSECTS. 



7. ARACHNIDS. 



8. CRUSTACEA. 



9. ANNELIDS. 

 CL. 10. CIRRIPEDS. 

 CL. 11. CONCHIFERA. 

 CL. 12. MOLLUSKS. 



CL. 

 CL. 

 CL. 

 CL. 



Do not feel, and move only by 

 their excited irritability. No brain, 

 not elongated medullary mass ; no 

 senses ; forms varied ; rarely articu 

 lations. 



Feel, but obtain from their sensa 

 tions only perceptions of objects, a 

 sort of simple ideas, which they are 

 unable to combine to obtain complex 

 ones. No vertebral column; a brain 

 and mostly an elongated medullary 

 mass; some distinct senses; muscles 

 attached under the skin ; form sym 

 metrical, the parts being in pairs. 



VEKTEBKATA. 



Feel ; acquire preservable ideas ; 



III. INTELLIGENT ANIMALS. 



CL. 13. FISHES. 

 CL. 14. REPTILES. 

 CL. 15. BIRDS. 

 CL. 16. MAMMALIA 



perform with them operations by 

 which they obtain others ; are intel 

 ligent in different degrees. A ver 

 tebral column; a brain and a spinal 

 marrow ; distinct senses ; the mus 

 cles attached to the internal skele 

 ton ; form symmetrical, the-pf-H.&quot; 

 being in pairs. 



