Distribution of Copper Compounds 



159 



TABLE V 



MiSCELLAXEOUS SOILS UNAFFECTED BY MINING DETRITUS 



Sample No. 

 and date 



OQ 



Description of sample 

 _„75 Surface 12 in. from new ground 

 June 5, '00 near Safford, recently placed 

 under Montezuma Ditch 

 Surface 12 in. university ground, 

 Tucson 



Condition and 

 weight taken, 

 grams 



2253 

 Jan. 3, '00 



3503 

 May 9, '05 



Surface 12 in. virgin unirrigated 

 soil, Colorado Valley bottom near 

 Yuma 



100 

 air-dry 



100 

 air-dry 



100 

 air-dry 



Cu 

 found, 

 grains 



none 



none 



none 



Cu 

 p.p.m. 



none 



none 



none 



These determinations, made in widely separated localities, 

 indicate the absence of copper in soils which are not immediately 

 under the influence of mining detritus. 



TABLE VI 

 Copper in Vegetation from Upper Gila Valley Farms 



Sample No. 

 and date 



3505 



Aug. 19, '05 



3512 

 Aug. 19, '05 



3507 

 Aug. 20, '05 



3509 

 Aug. 19, '05 



3513 

 Sept. 19, '05 



3739 



3741 



3780 



3740 



3738 



Description of sample 

 Alfalfa, before blooming, from 

 upper end of Geo. Olney's field 

 east of Safford, under Monte- 

 zuma Ditch 

 Alfalfa from bale grown in Lay- 

 ton (M. B. Steele) under Monte- 

 zuma ditch 

 Corn in bloom, leaves only, grown 

 in Layton (Jas. Welker), under 

 Montezuma Ditch 

 Wheat from stack, stalk and grain, 

 grown in Layton (M. B. Steele), 

 under Montezuma Ditch 

 Mistletoe, growing on willow 25 ft. 

 above ground, one mile east of 

 Safford, under Montezuma Ditch 

 Alfalfa seed, crop of 1906, grown 

 near Pima under Smithville Ditch 

 Alfalfa seed (Wm. Gillespie), crop 

 of 1906, grown near Solomonville, 

 under Montezuma Ditch 

 Shelled corn, crop of 1906, grown 

 at Solomonville, under Monte- 

 zuma Ditch 

 Shelled corn, crop of 1906, grown 

 at Solomonville, under Monte- 

 zuma Ditch 

 Shelled corn, crop of 1906, grown 

 near Pima, under Smithville 

 Ditch 



Condition and 

 weight taken, 

 grams 



Cu 

 found, 

 grams 



1206 

 air-dry 



1359 

 air-dry 



545 

 air-dry 



1125 



air-dry 



1245 

 air-dry 



782 

 water-free 



843 

 water-free 



932 

 water-free 



874 

 water-free 



1092 

 water-free 



.0062 



.0077 



.0033 



.0027 



.0094 

 .0026 



.0023 



.0004 



.0008 



Cu 

 p.p.m. 



5.10 



5.70 



6.10 



2.40 



7.60 

 3.33 



2.72 



.43 



.73 



trace trace 



