( n) 
Vitriol in the Compofltion of the Sublimate ^ but it 
will not be fo eafy to give a Reafon why the fame Co- 
lour fhould not have been produced from the Lixivi- 
um with Blood, and the fame Solution. 
Copper, when dilfolv’d in Aquafortis , tinges the 
Water of a green Colour:, and if to this you pour 
the two Lixivia of Blood and Flelh, the Coagula are 
much alike, viz. a white ting’d with greeny but when 
you add the Sfiritus Salis , they both change and be- 
come of a Colour not unlike the Copper itfelf before 
it is diffolv’d in the Aquafortis. If the 01. Tart art 
be pour’d to a Solution of the Copper, the Coagtilum is 
a pale green, which Coagulum the S fir it us Salis dif- 
folves, and leaves the Liquor clear, but green, as before 
Precipitation. 
Tin-Glafs (an imperfed Metal) dilfolv’d in Aqua- 
fortis , and mix’d with the Lixivium of Blood made a 
milky Coagulum , and by the Addition of the Sfiritus 
Salis , after fome Time Handing, its upper Surface 
chang’d to a light Blue. The Lixivium of Flefh and 
the 01 . Tartar't produc’d both white Coagula , 
which the Sfiritus Salis fcarcely alters. 
Lead dilTolv’d in Spirit of Vinegar produceth much 
the fame white Coagulum , when mix’d either with the 
Lixivium of Blood, Flefh, or the 01. Tart art, nor 
doth the Sfiritus Salis make any X \1 teration. 
By all thefe Experiments it is pretty evident, that not 
any of thefe metallick Bodies were affeded by the Li- 
xivium of Blood, fo as to produce this fine Blue. The 
two Metals untried are Gold and Tin, the latter of 
which, when dilfolv’d inSpirit of Vinegar, has fo near a 
Refemblance to Lead diffolv’d in the fame Menflruum, 
that in all 'Probability the Experiments would anfwer 
much alike in both. What may be expeded from Gold, I 
am not yet fo well affured of, as I am from Iron, which 
when 
