Show goad EXTRACTED WITHOUT I 1 1 J harris of london has written a letter to the journal giving the following account of or extracting golda gold from ores without the use of mercury tile the I 1 mines ties of reichenstein in silesia 4 abandoned ed for more than four centuries centuria 4 have been rbee recently u t opened with advantage in consequence of the application app i cation on a large scale of a method invented by bv prof for or separating old from the waste of arsenical ores the ore of reichenstein is an arsenical pv Tv rites containing about mins grains of gold in the ton the ore is roasted rn a verber atory furnace mir surrounded rounded by a large coni conens lensIng ng chamber eh amer in which the arseni ous ou acid is condensed as fast ao a it is vola thed there then than remains on the floor of j the furnace oxide of iron with a I 1 tain of 4 arsenic agether with the i j whole of the gold tate chii is placed in a ayes vesi sel eel so arranged that a current of chi chicorie norie can be passed th roush it bv which the A gilld old anti ani iron arft are taken up and afterward separated from the residuum by the acid of a certain quantity of katr r and t the he g gold old is afterwards precipitated from this solution bv ted hv drosen to prevent the admixture of iron at thi stage a small doaa of 0 ae acid id is introduced the auriferous compound having been separated ted from the liquor i is wished and beate i fiti in an open I 1 pore porcelain plain cruci crucible blo to drive off the sulphur bv which the gold is reduced to t the he metallic stage by flu sing in the usual manam i I 1 |