Annual report of the State Mineralogist for the year ending ... . The grade line of the deep modern channel is curved to a markeddegree; that of the shallower ancient channel to a scarcely perceptibledegree. In the following diagrams (Fig. 10) there are given the courses andgrades of various patches of channel exposed in mining. The magneticbearings of the down-stream courses are platted from a common point. The first group represents the first period; the second group, the secondperiod. The Paragon grade is exceedingly irregular, the channel bottom risingand falling alternately on the down-st
Annual report of the State Mineralogist for the year ending ... . The grade line of the deep modern channel is curved to a markeddegree; that of the shallower ancient channel to a scarcely perceptibledegree. In the following diagrams (Fig. 10) there are given the courses andgrades of various patches of channel exposed in mining. The magneticbearings of the down-stream courses are platted from a common point. The first group represents the first period; the second group, the secondperiod. The Paragon grade is exceedingly irregular, the channel bottom risingand falling alternately on the down-stream course. The grades of theDam, Mitchell, Rainbow, and Dix Mines, belonging to the second group,though determined, were not included in the diagram. They are asfollows: Dam and Mitchell, south 50 degrees east .005; Rainbow andDix, south 40 degrees west .005. ANCIENT RIVER BEDS OF FOREST HILL DIVIDE. 445 IV ^^-ZfA fiF & iP Fig. 10
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Keywords: ., bookcentury1800, booksubjectgeology, booksubjectminesandmineralr
