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Show 84-6 rations , and ( took toolt ) ( satnples samuiples ) ( of-miater ofmiater ) at a munbar , of points . He found that there was a very ( considerable colisiderable ) deposit of sand of a character that would settle through still water at the rate of one foot per minute , or greater . Comparing that with his experience on the lower Mississippi River , the charge of sand was ( exr ex7 ) , , tremely heavy ; that sand of that size is ( approxi- approxi ) ( mately inately ) one ( four-hundredth fourhundredth four-liundredth fourliundredth ) of an inch in diameter , . or greater . In addition to the sand which settled at this rate of a foot or more , and which in his experience is ordinarily quite troublesome , there was apparently about one equal quantity of sand that settled at the . rate of about ( one-fourth onefourth ) that speed . Now , this , solid settling sand could be quite readily carried in suspension , and ( would -would would ) not make as much trouble as the coarser sand first ( mentioned ineutioned ) . As to ( the tlm ) quantity of this sand , the only indications he has . are official records of the lower Colorado River in , the ( vicinit3r vicinity ) of Yuma . ( R . 1244 . ) The ( gradient gradieut ) of the river , as shown by the ( maps inaps ) , ( , . ) is over one foot per mile , with steeper sections that considerably exceed one foot per mile . Basing his answer on the matters which he ( has bas ) already detailed , he ( knows k-nows knows ) of no other river in the . United States of the character of the Colorado , as , he saw it there , which is ( commercially coininercially ) navigated . . ( R . 1244 , 1246 . ) |