70 SEPAEATIN& GOLB PEOM AEaENTIC CHLOEIDE. 



and from thence weighed out for assay in an assay balance ; 10 

 grains are wrapped in a piece of lead-foil 1^ inch square, and 

 cupelled at low heat witli about 60 grains of lead ; the resulting 

 silver button is boiled out, and the gold weighed. 



This mode of assaying the chloride is so quick — sis samples can 

 be easily assayed, inclusive of powdering, in one bour — that it is 

 well worth employing in all cases. Should the assay show more 

 gold in the chloride than desirable, it must be subjected to another 

 treatment with soda. Such a case need, however, only rarely, if 

 ever, occur. 



The question whether the whole of the gold should be removed 

 from the chloride by a second treatment with soda, as described, 

 or whether such additional expense for pot, fuel, &c., is better 

 avoided, if silver bullion containing little gold were readily 

 saleable, must naturally be left to the consideration of the cir- 

 cumstances attending each case. 



