CHEONOLOGY xvii 



1843 

 Yellowstone Eiver Expedition. 



1840-44 



Published the reduced edition of his 

 c l Bird Biographies. ' J 



1846 



Published first volume of "Quadru- 

 peds." 



1848 



Completed Quadrupeds and Biography of 

 American Quadrupeds. (The last vol- 

 ume was not published till 1854, after 

 his death.) 



1851 



January 27. John James Audubon died 

 in New York. 



