336 E.. H. Bogardus—Deportment of Titanium, ete. 
added in excess, and then acetic acid in large quantity. On 
passing sulphuretted hydrogen a white precipitate was again 
obtained. This experiment was repeated several times with 
identical results, proving that the substance would form ina 
solution holding free acetic acid. The precipitate was again 
subjected to a qualitative examination and this time with suc- 
cess. Previously no search had been made for acids: it was 
now decided to test for them. Phosphoric acid was soon 
potash and digested in water. . 
dissolved and was detected with molybdate of ammonia. The 
nearly white residue was proved to be a mixture of titanium 
and iron. ne-half yram of the ore was mixed with an 
kg weight of an ore holding a large quantity of titanium. 
Spe eae This experiment was followed by the regular tests 
or titanium, and its presence was soon demonstrated. Rutile 
ash and digestion in water, sulphuretted hydrogen gave a pre- 
cipitate as in the previous trials. As it now seemed proved 
tate was obtained in every instance with sulphuretted hyar 
gen. In one case the phosphate of soda was dissolved im 
water and added to the fused rutile and ore. Rutile was now 
in bisulphate of potash and digested in water ; after fil- 
phosphorie acid led to the thought that possibly it might be 
AM ois as an agent in the quantitative separation of he 
phosphorus in iron ores. No experiments were made with @ 
view to the settlement of this question. In all the co-precipita- 
tions of titanium and phosphoric acid, the latter was present 12 
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