POSTE SCD eR re ag et ee Ee Ue ae Re in MN ee eg BE Cor eae yo Regs MT oe PT ere Re Se 
: 
a 
GOLD AND SILVER IN. SEA-WATER. 345 
1000 ce. distilled water and 100 ce. of -01°%/ AuCl, solution = 
1543 grain gold. 
(1) Treated with 1 gramme FeSO, and NH, yielded -1253 gr. 
(2) Filtrate treated with -5 gram. FeSO, & NH, ,, ‘0010 ,, 
1963 
i.e., @ loss of ‘0280 grain gold or 18-14%. 
1000 ce. distilled water and 100 ce. of 01% AuCl, solution = 
1543 grs. gold. 
(1) Treated with 1 gramme FeSO, and NH, yielded ‘1327 gr. 
(2) Filtrate treated with -5 gram. FeSO,&NH, ,, ‘0010,, 
‘13ST. 6 
1.. & loss of -0206 grain gold or 13-35%. 
EXPERIMENTS with Sea-WaTER AND ADDED GOLD. 
1000 cc. Coogee sea-water and 100 cc. of ‘01% AuCl, solution 
='1543 grains of added gold. 
(1) Treated with -5 gramme FeSO, and NH, yielded -1430 gr. 
(2) Filtrate treated with -25 gram. FeSO, & NH, ,, 0020 ,, 
1450 ,, 
4.¢, @ loss of 0093 grain gold or 6-027%. 
1000 ce. Coogee sea-water and 100 ce. of ‘01% AuCl, solution 
='1543 grains gold. 
(1) Treated with -5 gramme FeSO, and NH, yielded -1415 gr. 
(2) Filtrate treated with -25 gram. FeSO, &NH, ,, °0020 ,, 
: 1435 4, 
*é5 a loss of 0108 grain gold or 7%. 
500 ce, Coogee sea-water and 10 cc. of 01% AuCl, solution = 
‘0154 grains gold. 
(1) Treated with 1 gramme FeSO, and NH, yielded 0095 gr. 
(2) Filtrate treated with -5 gram, FeSO,&NH, ,, 0000 », 
. 0095 3 
“€y & loss of *0059 grain gold or 38°317%. 
