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Show 117 -- 113-- the conduct of the river in connection with rapids, rapid water, and quiet water?" R. 241- 242. The amount of silt or sediment carried in a river or transported by a river depends largely upon the velocity. " Where the velocity increases at the riffles, the velocity is high enough to send forth all of the finer particles of silt and sediment which, when the water reaches the quieter stretches, are deposited in the quieter stretches and remain there until, during flood periods, the velocities increase enough to pick then up and carry them on to some other place. " Q Is there any variation in the results obtained according to the different kinds of silt that the river carries? " A In the Colorado River the experiments that have been made on the Colorado River - as I have read from official reports, the silt runs all the way from a very fine sediment, almost or practically infinitesimal, up to gravel like that carried in the San Juan. The character of the material varies at different periods of the year, depending upon whether the floods are from the higher portions of the river, in snow, or whether the floods are from the lower stretches, on account of pains, etc. There is a change in the character of the silt." R. 242- 243. Complainant's Exhibit No. 81, a book entitled " The Colorado River," By Lewis R. Freeman, published by Dodd, Read & Co., New York, 1910, is received in evidence. R. 243- 245. |