,ET. 61.] TO JAMES D. DANA. 627 



equally called into requisition in the case, in a man- 

 ner so parallel that there is no drawing any but a 

 purely arbitrary distinction between the one and the 

 other. 



I conceive one as effective as the other as regards 

 the leading on and fixing variation. 



When I say now again that the expression " fitted 

 by its regional development to the region " conveys no 

 clear meaning to me, I am only telling you, as I did 

 before, my way of looking at things, not finding fault 

 with yours. 



By the way ; " variation (inherent) in particular di- 

 rections," is your idea and mine, but is very anti- 

 Darwin. Good-night. A. GRAY. 



Dr. Gray greatly enjoyed his visit to California, 

 with the long overland journey thither. It was an 

 ever-renewed excitement to see plants growing which 

 he had seen only as dried specimens, and the conduc- 

 tor of the train was at last almost in despair at the 

 scattering of his passengers to grab what they could 

 in the short halts, as they became inspired by seeing 

 Dr. Gray rush as the engine slowed, to catch all 

 within reach. Then when in motion again the speci- 

 mens were brought from all sides to see what they 

 were. And the preparing and drying went on to the 

 wonder of some and the interest of all. 



His ascent of Gray's Peak was made a great occasion 

 in the neighborhood. A large party gathered from 

 Georgetown and Empire City, and started the after- 

 noon before, after having been most hospitably dined 

 by Judge McMurdy, in Georgetown ; the night was 

 passed in a mining-tavern cabin, and the ascent, 

 some going on horseback, some on foot, was made the 



