Show it lias has ben bean found that if metallic iron is is boiled in ili a solution ef of bal sal sulphate phate of alu aiu mirtia however impure the tiie iron iran diMel ves vec and pure sub sulp sulphate hate hale is thrown down as a atille precipitate this tins may when washed be beat at once ig thed tred and aud mixed with wilh carbonaceous spatter in the ulua usual I 1 rna ina manner for the of the volatile vol TOl atile itUle c chloride irid 0 f aluminium pure may ruay thus be directly from the most moet impure clays clay this tins by boiling with wilk the equivalent qua quantity of sulphuric acid becomes converted into the si labie lable |