Perhaps by other management of the fame Body, this 
Lots might be repair’d again. And ’tis poffible there 
may be Chymical Operations, which inftead of im- 
pairing, rmy' Improve and Heighten thefc wonder- 
ful Qualities of Bodies : Nay for ought that I know, 
may as well give them a nevp, where they never were 
at all 5 as to take them away, where they once were 
in a great de^e of Perfeftion. The Powers of 
Nature are norro be determin d beforehand by De- 
monstration^ but to be fearch’d out by Ohfervation 
and Experiment, And as thefe Trials have open’d 
the way to Something that looks with a very promipng 
AfpeB ^ fo we hope by degrees to purfue them with 
fome good Succefs. 
. / 
U U U 3 
VIII. A 
