Asa Gray. 191 



city in many of his discriminations, a fair presentation of his 

 scientific claims, of his love of nature and greater love of self, 

 without a harsh word for his errors or egotism ; and only a 

 citing of a sentence here and there, or a fact, that enables Ra- 

 finesque to make his own presentations as to his species and 

 genera, with a bare mention of his " twelve new species of 

 thunder and lightning." 



The publication of the second volume of the " Flora," in 

 1843, ended that work. The territory of the United States 

 afterward took larger dimensions, and new fields were to be 

 explored before a complete "Flora" could be published. Tor- 

 rey was engaged on these studies until his death in 1873 ; and 

 Gray also was publishing memoirs that were contributions to 

 the subject. Gray's various memoirs include : descriptions of 

 the collections made by Lindheimer, in western Texas (1843-48); 

 by Fendler, in New Mexico (1846-7) ; by Wright, near the 

 boundary of Texas and Mexico (1849 and 1851-2); by Thur- 

 ber, along the United States and Mexican boundary (1851-2); 

 the Botany of various Government surveys, and other Gov- 

 ernment reports, and a portion of the Botany of California. 

 Other papers are distributed through the publications of 

 learned societies, especially the American Academy of Arts and 

 Sciences of Boston, which contains hundreds of pages of them, 

 the Proceedings of the Philadelphia and California Academies, 

 the Boston Society of Natural History, the Linnean Society of 

 London, etc. 



Further, the plants of the Wilkes Exploring Expedition, ex- 

 clusive of the ferns and those from western North America, 

 were early sent to him for description ; and in 1854 appeared 

 his Report, in quarto, accompanied by a folio atlas,- containing 

 a hundred plates. 



Gray was three times over the Pocky Mountain region to 

 the Pacific Coast. On the second trip he was accompanied by 

 Sir Joseph Hooker ; and an important paper on the " Vegeta- 

 tion of the Rocky Mountain Region" by them is published in 

 the Reports of the Hayden Geological Survey for 1878. He 

 was in Europe again in the years 1850-51. A note from Mrs. 

 Gray says : " He went abroad • especially for the plants of the 

 Wilkes Expedition. After traveling in Switzerland (going up 



