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Show < ) 77 < The term ( "bed bed ) ( load" load ) was introduced by Gilbert in his work , the ( "Transportation Transportation ) of D6bris ( byl"Moving bylMoving ) ' ( "Water Water Water ) , " and refers to certain amount of material transported along the bed of the river ; it is in this way that ( he lie ) used the term as applied to the Colorado ( Eiver River ) and its tributaries . Part of this material is in suspension and part is rolled along . That part being rolled is termed ( "saltation" saltation "saltation saltation ) by Gilbert . ( R . 3810 . ) The terms ( "scour" scour ) and ( "fill" fill ) are applied to ( changes clianges ) in the level of the river bed . These changes are determined ( while ivhile ) making soundings and taking samples . If a greater depth is given for the gauge height , they say the bottom is scoured out ; if the depth is less than the gauge height , they say a fill has taken ( place phace ) ; and a place that is scoured out may be filled up at another time , ( making rnaking ) a kind of ( con- con ) tinuous process ( of scour and fill ) . ( R . ( 3811-3812 3811-3S12 38113S12 ) . ) ( Cross-examinatio7i Crossexaminatio7i ) ( R . , Vol . 21 , pp . 3812-3820 ) : Earlier records , with reference to matter in ( solu solu- solu ) ¬ tion ( and suspension ) in these rivers , appear in Water Supply Paper No . 274 , and cover samples taken at Yuma about 1890 ; and samples taken in 1904 by the Bureau of Reclamation on several streams of the Colorado River Basin . ( R . 3812 . ) Samples from the Little Colorado have been tested infrequently when a man happened to be passing a station , there being no ( regular refrular ) observer . He ( doesn't doesnt ) know under what conditions the samples were taken , nor has he ever seen the Little Colorado , ( except excelpt ) |