Show refining of gold and silva the gold when it is brought to be 44 ussa an impure state it is in sometimes an at 1 is ig to ottah combination with allot I 1 ier we mixed with iner mercury cury it il is called au an indal first process it undergoes is in of melting alya doy I 1 bars when it is ex ipiniu d by the assayer j 6 value determined r f it is then re melted bilth with a mass 10 of jk 9 1 a largo lai ge to combine with it dutli intimate n ia v hi while heated is into water titer w I 1 ie into millite shining particles wild and is call N fated from the shape it assumes tile alie is tb 11 submit it to the action of nitric a ac winch which it is in thoroughly i saturated tile the n aci mixed with heated steam to render it mo raap tifis acid will not affect gold in the lens leasta silver it nets acts very readily eating it i aw away workmen say and forming tile ane q 1 I the term RATING by the way when action of acids on morals is wholly il anit I 1 acids have hava no such epicurean appetites phrase would imply the metal IT alpe is not nit d def I 1 by the corroding action every atom of it is 1 although in a different form and exhibiting fernl properties thus in the pre present i caiet 6 silver forms a with the nitric itric acl e becomes a solution of the iduate of silver v the gold to i precipitated fre freed egi from tl it i ubo hoiby I 1 the theM silver lver I 1 I 1 1 11 the solution the nitrate of silver Is theia off bild the res residue idue thou gh it looks like ir irig proves to be gold in lia a pure pue stale to ari bria silver back to its original form muri ilic I 1 I 1 chemists now term it il hydrochloric acid ia to the nitrate of silver when an inter chapik I 1 acids takes taken place and of silver is P pr led fed the nitrate of soda being held in solute I 1 to this mui late of silver JB is added gm gl a I 1 zine zinc which by reason of the great acid has for it forms the in solution the silver being precipitated I 1 la pure sarte the next step in the process is to dry and silver so that it may be melted in hit this is done by what are termed sand bi is saud with the lim tem temperature eratus raised so as ai off thit the moisture after being taken for fora t the silver und mild gold are subjected to the adf firt I 1 hydraulic press and e come 0 e out n in the s I 1 large aree cheeses and inde indeed ed are calle calledo I 1 I 1 name N Y post I 1 I 1 t |