cupuLiFER^. SILVA OF NORTH AMERICA. 



121 



The wood of Quercus Wislize7ii is heavy, very hard, strong, and close-grained ; it is light brown 

 tinged mth red, with thick lighter colored sapwood, and contains numerous large open ducts arranged 

 in irregular bands parallel to the broad conspicuous medullary rays. The specific gravity of the 

 absolutely dry wood is 0.7855, a cubic foot weighing 48.95 pounds. Sometimes used for fuel, it is not 

 distinguished for this purpose from the wood of Quercus acjr'tfolia. 



Discovered by Fremont on the Sierra Nevada in the winter of 1844-^5,^ Quercus Wislizeni, which 

 was at first confounded with Quercus agrifoUa, was described from specimens gathered by Dr. F. A. 

 Wislizenus^ in 1851 on the American fork of the Sacramento River. 



gentle, enthusiastic, and simple man of singular purity and upright- ^ Teste Herb, Torrey, in which Fremont's specimen is preserved, 



ness of character. (See Pitlonia, i. 145.) ' See vi. 94. 



