IN A CASE OF MOLLITIES OSSIUM. 
59 
The watery solution gave a precipitate with sulphate of copper and with bichloride 
of mercury; each precipitate readily dissolved when acetic acid was added. The 
precipitate with sulphate of copper was soluble in caustic potash, forming a splendid 
deep blue solution, which became more claret-coloured when heated. 
Strong hydrochloric acid dissolved the substance, giving a splendid purple blue 
solution. 
Dissolved in caustic potash and boiled, a deep inky blackness was produced by 
dropping acetate of lead into the solution. 
On the Analysis of this Substance. 
The substance was prepared in the following way. The urine was mixed with a 
large excess of alcohol. The precipitate which formed was thrown on a filter, and 
well-washed with cold alcohol until it passed through, leaving no stain when evapo- 
rated on platinum. 
It was then dried m vacuo, finely powdered, and treated with aether at the boiling 
temperature, until no traces of fatty matter were left on evaporation of the aether. 
The substance was long dried in vacuo over sulphuric acid. 
6’72 grains of the substance so prepared gave O’ 19 ash =:2‘8 per cent. 
Of second preparation 4’59 grains of the substance gave 0T3 ash =2’9 per cent. 
4' 10 grains, minus ash, burnt with chromate of lead, gave 7*77 carbonic acid and 
2 64 water. 
C =51-68 
H= 715 
4'12 grains, minus ash, burnt as before, gave 7'78 carbonic acid and 2-63 water. 
C =51-50 
H= 7-09 
Of another preparation, 
3-57 grains, minus ash, gave 6-84 carbonic acid and 2-24 water. 
C =52-25 
H= 6-97 
4* 12 grains, minus ash, dried at 280° Fahr., gave 7'90 carbonic acid and 2-66 water. 
C =52-29 
H= 717 
Another preparation, 
3-83 grains of the substance, minus ash, gave 7'33 carbonic acid and 2-47 water. 
C =52-16 
H= 7-16 
4-42 grains of the substance, minus ash, gave 8*46 carbonic acid. 
C =5219 
