(2235) 
Water : Promifing to deliver hereafter in the Second 
Book, the particular Natureofundelr.grouad Bodies^ and 
withal to teach the Refolution of them into parts and the 
proprieties of thofe parts 5 together With ati Jppendw 
thatfliall contain a great number of Ghymical Mixtures* 
never feen before, and grounded upon numerous Exper i« 
ments* We cannot forbear giving the Reader, of that 
great variety of matter and Trials, contain'd in the faid 
FirftBook, one very confiderablc Experiment, faid to 
have been adlually made by theAuthour himfelf,and which 
feenas worth repeating for further obfervation and im« 
provement» It is iufliortchis^ as it maybe found p^ 170, 
1 7 1. Phyfiee Subterranea. 
Having a mind, for a certain end, to melt a Jafpetj he 
faith, he put it into a crucible, and acStually melted it by 
an intenfe fire, and fome other requtfires neceflary to the 
operation. But to the end that no coals might fall into 
the pafl: , he cover'd and luted the crucible, which was a« 
bout half fiU'd with Jafper-ftone: which being nowmeU 
tedj he open'd the crucible when cool, and^ to his great 
wonder, found at the bottom the Jafper melted together 
into one Mafs, as hard as before, but Milk- white and half 
opaque^ refembling a natural If'/i'/^^ Agat» but the cover, 
and the upper parts of the crucible , that were un-fill'd, 
and could not be touched by the Jafper in the meltings 
were tinged with the natural colour of the Jafper 3 info« 
much that if there had been the hardncfs of a Jafper and 
the colour not fuperficial only, the fragments of the ere* 
cible might have been fold for the beft and moft polifli'd 
Jafperj having here and there greeniihftreaks and fpecki^ 
the reft being red and yellowilh; all fo beautiful ^ that a 
good Painter would fcarce have been able to imitate thofe 
various colours.Of thiSjthe Author faith,he keepeth ftill the 
peicesin his Laboratory at Munchen m Bavaria^ as a very 
extraordinary treafure ^ efteeming that thofe upper parts 
were tinged by the anima of the Jafper, driven up by the 
force of the fire from its inferiour part, and adhering to the 
body of the crucible^ 
Having thus related this uncommon experiment , we 
Mmm 2 fhalE 
