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AMERICAN 



JOURNAL OF SCIENCE AND ARTS 



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[SECOND SERIES.] 



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^^' -^^ l^-~ Observations on the Phitofi . Geysers of California ; 



^ Forest Shepherd * Prof. Economic Geologv, in Western 

 lieserve Colfego 



Hudson J Ohio. 



•adit 



many years ago, the Chrysopylaj or Golden Gates at the entrance 

 or the Bay of San Francisco were part of the sohd land, and that 

 the inland sea receiving the waters of the Sacramento and San 

 Joaqum overflowed the beautiful valleys' of San Jose, Napa and 



nT^' ^^^ ^^^ ^^^ outlet in the vicinity of Monterey. 



Other more recept. California explorers' affirm that in the pres- 

 ent bay of Sari FranciscA th6y have discovered standing trees 

 J^HS^P'etely petrified, to which they have made fast their boats at 

 low tide. The numerous dislocations observed in the tertiary 

 strata, together with the great number of specimens of petrified 

 wood and deposits of lignite found upon the shores of the bay, 

 also signs of thermal actioa-at the southeastern section of the bay, 

 induced me to give so much credence to the above and other 

 traditions, as to enter upon some careful examinations with refer- 

 ence to them. In.'the course of my. investigations, I have ex- 

 plored some remarkable geysers in the Pluton valley j and these 

 lorm the main subject of my present communication. 



Oa my way to the Pluton yatley, 1' first coasted around the 

 my of San Francisco in an open boat, examanng the rocks 

 ts vicinif^. At the entraoi^e of Napa valley and about two 



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"«ted by him to tLL.%burnal. 





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