OCR Text |
Show Correcting Earthquake Disturbances. A curious result of the great Call-onila Call-onila earthquake of I90C was tho par-nnnent par-nnnent displacement of largo areas tovercd by the trlangulatlon of tho :ous and geodetic survey, so that the engths and directions of tho lines olnlng the stations wero sufficiently ihanged to diminish the value of tho ,;rlanguiatlon as n framework for u-.ii u-.ii ro surveys. Duping the past year i new trlangulatlon. has been made iver this disturbed areu, and cprrcct-id cprrcct-id ' positions havo been determined 'or 01 of' tho old stations between Point Arena and the neighborhood of i ilonterey bay. |