PROFESSOR HAECKEL 97 



must be well pleased at the rapid spread of his views among 

 some of the ablest and most laborious of German naturalists. 

 Among these, Professor Haeckel, of Jena, is the Coryphaeus." 



The Introduction to the Classification of Animals, published 

 in 1869, was not a new work but a partial reprint of 

 the lectures on Elementary Comparative Anatomy, issued in 

 1864. 



