64 AN INTRODUCTION TO ZOOLOGY. 



Poets have pretended that the goldea age of the world 

 is over : the evolutionist sees that it is yet to come. 



NoTE.^The student should njuard against too hasty accept- 

 ance of post-Darwinian teachings regarding evolution and 

 development. The best summary of recent ideas on these 

 subjects will be found in the pages of Thomson's " Outlines 

 of Zoology." 



