HISTORICAL SKETCH 19 



In December, 1859, Dr. Hooker published his 'Introduction 

 to the Australian Flora.' In the first part of this great work 

 he admits the truth of the descent and modification of spe- 

 cies, and supports this doctrine by many original observa- 

 tions. 



The first edition of this work was published on November 

 24th, 1859, and the second edition on January 7th, i860. 



