LINN^US AND NATURAL HISTORY 135 



worms that Cuvier has included in the radiate group, into 

 another branch called Vermes. This separation of the four 

 original branches of Cuvier was a movement in the right 

 direction, and was destined to be carried still farther. 



Fig. 35. — Karl Th. von Siebold, 1804-1885. 



Von Siebold (Fig. 35) was an important man in the 

 progress of zoology, especially in reference to the comparative 

 anatomy of the invertebrates. 



Leuckart (Fig. 36), whose fame as a lecturer and teacher 



