OCR Text |
Show tt 9SO ( being "being being ) taken about seven or eight ( o'clock oclock ) in ( theniorn- theniorn ) ing , , the next j ust after noon , and the next in the ( after- after ) - noon . During the low stages of water the samples were taken at the bridge at Goodrich , and during high stages from the cable from which discharge ( measure- measure ) ( ments 7ments ) were made , and he usually took from ten to ( thirteen -thirteen thirteen ) samples a day . The samples ( were ivere ) taken in pint milk bottles , : similar to the ( method inethod ) described by Mr . Howardj filtered , dried , and weighed . Having already the ( weight "Weiglit Weiglit ) of the filter paper , the weight of the silt is obtained by deduction , and knowing the weight of the bottle and its contents , the percentage of silt in a pint of water is a matter of simple calculation . R . 3822 . ) The samples were taken in such a way that the milk bottle was not quite full when it reached t1le surface of the water , thus ( preventing preventinir ) any loss of sediment if there happened to be an excess in the river at the time . He observed several periods of high or flood water , one specific instance occurring July 30th , , 1929 , , ( -at at ) which time the gage showed a rise of four feet in ( twenty-five twentyfive ) minutes . This rise was caused by a flood down Gypsum Creek . During that period the suspended matter increased from ( 5.5 5-05 ) to ( 8.4 SA ) per cent ; ; the water became very red , but the color disappeared two hours after the peak stage was reached . . ( R . 3822-3823 . ) |