Whitney's Geology of California. 351 
in Lancaster and York it disappeared behind buildings, so that 
no estimate could be given. ‘The errors in regard to its appar- 
ent altitude when it first appeared, are readily explained on the 
assumption that few saw it at the first moment of visibility. 
=—=—=—"__—_-.__ 
Art. XLITL— Whitney's Geology of California. 
[Continued from p. 231 of this volume.] 
and such other matters treated of in the Report as our space 
will allow, following as nearly as is convenient the order the 
author pursues. 
Tue Srerra Nevapa. 
This mountain chain, the grandest in the United States, pos- 
Sesses a peculiar interest from whichever point of view consid- 
ered, Possessing, as it does, the highest peaks in the country, so 
far as is known, and perhaps the greatest magnitude of mass of 
any chain in North America, abounding in the grandest scenery, 
Containing mines the products of which have changed com- 
mercial values throughout the civilized world, and which have 
Stimulated an emigration that has built up eleven states and ter- 
Titories west of the meridian of 103° within seventeen years, 
