( *4 ) 
• • y jr* 
Experiments that have been tried with the Solutions cf 
Vitriol, and produce as fine a Colour:, nor can this be 
owing to any Property in the Diffolvent itfelf, which, 
tho’ drawn from the fame kind of Vitriol all along 
made ufe in thefe Experiments, yet is fo alter’d by the 
violent Fire in the Produ&ion of it, as not to anfwer 
in any Trials to the Vitriol itfelf. 
May we not therefore hence conclude, that Iron is 
the Metal, that is the Subjeft of this beautiful Colour 
produc’d by Means of the Lixivium with Blood > 
tj 
VI. The 
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