( ) 
cdj after that another, and a third near the Pomiim Ma- 
mi ) by thefethe Bullet was difcover'd, and cut out in 
AuguH 1672 . 
IX. An Account of • viz. I, ^ride^ioncs 
Chymkit Oxoniar habited a Johanne Freind, M. P, 
Mdis Chrijii Alumno, 
T HO’ the Art of Chymiftry is at prefent much im- 
proved, and abounds with many excellent and 
uletul Experiments ^ yet it mult be acknowledg’d, that 
hitherto there has been made but a very little Profrrels 
in the Fhilofophy of it^ and that'Men are ftill to feek for 
the Reafons of the many ftrange Plmiomena.it produ-' 
* .ces. Tlie Chymilfs generally making ufe of fuch Prin- 
ciples as have no foundation in Nature, it is no wonder 
if their Philofophy is inconliftent with it felf, and is nei- 
ther to be explain’d or underftood. On tills Account 
the Learned Author of this Excellent Treatife, w'ithout 
confidering the -Principles and Errors of former Chy- 
mids, endeavours here to give a clear and eafie Account 
of the chief Operations of Chymillry from the true Prin- 
ciples of Natural Philofophy, and chiefly that of Attra- 
which, he lays, is no Figment or ffypothefis, 
but deduced from many plain Experiments, and ground- 
ed on the Laws of Nature and that Habitude that is 
found among Bodies, but particularly from the Obferva- 
tions that are to be made in Chymiffry it felf. Tins 
Principle of Attraftion, with feveral other Lemma’s that 
are borrowed from Gcornetry and Mechanicks, he ex- 
plains and lays down as Axioms, which are to be unclcr- 
flood, before any Progrefs can be made in the Science of 
Nature.. 
