218 Value of Native Gold, éc. 
quartz in an ounce ; as this specimen weighed 1875 grains, 
the quantity of quartz, according to the Table, would amount 
to 70°49 grains, while by independent calculation the quan- 
tity was found to be 69°835 grains, a difference not worthy of 
notice. 
Grains. 
22. Weight of mixed specimen of Gold and Quartz, 
IEA gree Casadacisonesneraaemeseccsoaese bere 
HN WALGTI csceeearacceeeeccrees-ceees) LOSIOG 
DieLENCes naitececccongcecssers | Os he 
111°75 
— pg * 1000 = 122311 Sp. Gr. 
Weight of Quartz according to Table ......sseeeeeccere 9°28 
op by Calemlationl seaevesna-<<4¢ce-oeessea) Oeoe 
- 23. Mixed specimen of Gold and Quartz, 
Grains. 
Weighed in air .......00cccsecessaee 200 
Weighed in water...cccccrseesseeee 20975 
DDIMCTENCE eeccenescmeneesenseeesee -SOoo 
236 
~ 26°25 
Weight of Quartz by Table, 82°8 grains to the ounce, or 
40°7 grains in the specimen. 
24. Specimens of Gold and Quartz, 
X 1000 = 8990-4 Sp. Gr. 
Grains. 
Wreighed:in ait .2.:5.c0s.cesssesseqs 108 
Weighed in water.....ccccssossesre 96°75 
Mifferencehccccscscssessvesses MOLD 
103 
G57 X 1000 = 16480 Sp. Gr. 
Quantity of Quartz by Table, 1°95 grains. 
25. Specimen of Gold, apparently clean. 
Grains, 
IWreished nntairgeccs.csssn oxcaeseoeel yo 
Weighed im water sesssccccccosrseee 165 
Difference... eceesesseesececaeeaore 10 
175 
70 xX 1000 = 17500 Sp. Gr. 
