58 RESOURCES OF CALIFORNIA. 
The Downieville gold is coarse, and from 895 to 925 fine. 
At Goodyear’s Bar the fineness varies from 880 to 885. 
At Foster’s Bar, and farther down, from 890 to 900. 
At Slate Creek and Cafion Creek, from 900 to 910. 
At Forbestown, in Yuba county, the gold is 890 fine. 
At Camptonville, the fineness is from 920 to 970, except in 
one hill, which has wiry gold, 870 fine. 
The gold of the Middle Fork of the Yuba River is fine, from 
885 to 890. 
That of the creeks and ravines tributary to that stream is 
still finer—from 900 to 920. 
At North San Juan the fineness is from 960 to 965. 
At French Corral it is 920 fine. 
The gold of the Southern Fork of the Yuba River is from 
890 to 900 fine. 
Every hill about the fown of Nevada has a quality of gold 
differing from that of other places in the vicinity. Some of it 
is very good, but the general character is poor, from 800 to 
850. Most of it is rough. ; 
The Grass Valley gold is poor, from 800 to 840. 
At Rough and Ready the gold varies as at Nevada. 
The gold of Yuba county is good, from 940 to 970. 
The Timbuctoo gold in Yuba county is 950 fine. 
The gold of Park’s Bar is 910 fine. 
The North Fork of the American River has gold from 915 
to 920 fine; the Middle Fork from 865 to 900; the South 
Fork from 915 to 920. 
At Iowa Hill, the gold is 900 fine; at Michigan Bluff, 930; 
at Forest Hill, 900; at Yankee Jim’s, from 890 to 910; at 
Auburn, 860; below Auburn, and near Ophir, 820; and at 
Secret Ravine, 780. All these placers are in Placer county. 
At Gold Hill, in Placer county, iridium is found fastened in 
with the gold; the only place on the coast where the two 
metals are found fastened together. 
Next we come to El Dorado county. The Coloma gold is 
good, about 915 fine ;’ and some of the hill gold in the vicinity 
