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Show CHARLES ( SPATJLDINQ SPAULDING ) 970 HOWARD For Complainant ( Record , vol . 21 , pp . ( 3794-3820,3882-3883 3794-3820,3SS2-3883 379438203SS23883 ) ) He is of ( Washington lVashington ) , D . C . ; a chemist by ( profes profes- profes ) sion , and associate chemist in the Geological Survey , Department of the Interior . He is a graduate of the ( Worcester Allorcester ) Polytechnic Institute in ( Massachu Massachu- Massachu ) setts , in the year 1918 . Since that time , with the exception , of a portion of a year , ( he lie ) has followed his profession , and for the last few years , since the early part of 1925 , has made a study of silt in the waters of the Green , Colorado , and San Juan Rivers . In May , 1925 , he went to the Geological Survey gaging station at Bright Angel Creek in Grand Canyon , to study methods for the determination of the quantities of suspended matter in the Colorado River , using a sampler devised by Mr . Aube , a ( me- me ) chanical engineer in the Water Resources Branch of the United States Geological Survey , and himself . He spent 20 days at Bright Angel Station . From there he went to the Yuma Gaging Station , and from Yuma to Topock , and then back to Bright Angel Station . In 1928 he was at the San Juan Gaging Station at Goodrich , ( Utah Utali ) , going from there to Bright Angel Station , thence to Topock and Yuma . ( In 1n ) June , 1929 , he went to the San Juan Station , thence to Lees Ferry , from there to Topock , and thence to Bright Angel Station . The purpose of the visits during the last two years to these different stations was to get in contact with |