420 
Mr . Schmeisser’s Account of a 
EXPERIMENT IV. 
A piece of the substance was exposed to the action of the 
blow-pipe, did not crackle nor split asunder, nor did it melt 
when even exposed to white heat, but it discovered a very 
bright phosphorescent light, became more brittle, and had lost 
its greenish cast ; it was then partly soluble in water. 
It only lost a very little of its weight, when exposed for a 
long time to white heat, but it then still effervesces with acids. 
EXPERIMENT V. 
It melted with borax and soda with ebullition, but neither a 
blue nor a green colour was produced when melted with the 
first. 
EXPERIMENT VI. 
Liquid volatile alkali did not extract any blue colour from 
the powdered substance, nor when added to the solution in 
acids. 
experiment vii. 
The solutions in nitric and muriatic acid were colourless, 
and a piece of paper dipped into this nitric solution burnt with 
a red flame, which was first observed by Dr. Ash. 
experiment viii. 
Phlogisticated alkali, or prussiate of pot-ash, added to a sa- 
turated solution, discovered a very slight quantity of blue pre- 
cipitate. 
experiment ix. 
Oxalic acid, or acid of sugar, added to the diluted solution, 
discovered a very slight precipitate. 
