188 LAMARCK, HIS LIFE AND WORK 
Lamarck perceived the need of reform, of bringing 
order out of the chaotic mass of animal forms, and he 
says (p. 33) that he has been continually occupied since 
his attachment to the museum with this reform. 
He relies for his characters, the fundamental ones, 
on the organs of respiration, circulation, and on the 
form of the nervous system. The reasons he gives 
for his classification are sound and philosophical, and 
presented with the ease and aplomb of a master of 
taxonomy. 
He divided the invertebrates, which Cuvier had 
called animals with white blood, into the seven fol- 
lowing classes. 
We place in a parallel column the classification of 
Cuvier in 1708. 
Classification of Lamarck. Classification of Cuvier. 
1. Mollusca. I. Mollusca. 
2. Crustacea. Il. /usectes et Vers. 
3. Arachnides (com- Te litsectes. 
prising the Myri- 23 Viers. 
apoda). III. Zoophytes. 
A. Insecteés. I. Echinodermes: 
Bek Els. 2. Meduses, Animaux 
6. Radiaires. infusorines, Roti- 
7.. Polypes. fer, Vibrio, Volvox. 
3. Zoophytes propre- 
ment dits. 
Of these, four were for the first time defined, and 
the others restricted. It will be noticed that he sepa- 
rates the Radiata (Radzaires) from the Polypes. His 
