SOME OF WORLD'S BOTANISTS. 147 



ica" and "Flora of North America," comprise his 

 published writings. 



MicHAUx, II., Francois Andre, son of the pre- 

 ceding, a French botanist, was born at Versailles in 

 1770, died at Vaureal, October 23, 1855. He made 

 three trips, in the employ of the government, to North 

 America, to ascertain what species of trees would bear 

 transplanting to Europe. His principal work is 

 "History of the Forest Trees of North America." 

 To this was added by Thomas Nuttall three volumes 

 containing the trees not included in the Work by 

 Michaux. 



Nuttall, Thomas, born at Settle, Yorkshire, Eng- 

 land, 1786; died at St. Helens, Lancashire, England, 

 September 10, 1859. In America from 1807 to 1842. 

 Was appointed Curator of the Botanical Garden at 

 Harvard University in 1822. He wrote: "Genera of 

 North American Plants," "The North American 

 Sylva, " " Manual of Ornithology of United States and 

 Canada," "Journal of Travels in Arkansas Territory 

 in 1819." 



PuRSH, Frederick. Bom in Tobolsk, Siberia, in 

 1774; died in Montreal, Canada, June 11, 1820. He 

 was educated at Dresden, came to America in 1799, 

 and spent twelve years in botanical explorations. In 

 1811 he visited England and published "Flora of 

 North America." He was engaged in the collection 

 of materials for a flora of Canada when he died. 



EiDDELL, John L., Ohio botanist. 



RuDBECK, Olaus (1630-1702), founder of the 

 botanical garden at Upsala, 1657; his son, Olaus 



