('.«*) 
of the deciOonsio Law concerning Chymical Gold, true or 
falfe. Fourthly s what the celebrated rhilofophers stone was 
among the Ancients, and whit they underwood by the 
fame? 
In the twelfth : Firft, Of the seminal Principle of all things,, 
its engine, nature and property 5 of the way how Nature 
proceeds in the Generation of Minerals, Vegetables, Animals 5 
of fpontaneons Generation 3 of Z eophyts , Infe&s of ail 
forts, and particularly of the Worms bred in Men ; toge- 
ther with the caufes .why Nature would produce fuch 
fwamrsof infinite forts of Infeds. Secondly, of the va- 
riety and differences of Vegetables 3 of the rcquifits to know 
the verities of Plants , and of the feverai Ways of Engrafting « 
Thirdly, of the Art ofDiftilling , whereby Nature is imi- 
tated, as doing all her under* ground Works, in the Opi- 
nion of this Author., by Diftillatien. Fourthly, of ths La- 
boratories of various Arts, in which, according to Nature® 
pattern , tifed in her Subterraneous Operations , Arrange 
things may be performed : where treating of Chymicdl Se- 
crets , the truth of the Preparation of Aurum potabile isdif- 
cuffedj and the Magifteries of Gold, Silver, Iron, Tin, Cop- 
per and Lead, examined ; to which is fubjoyned an Appen * 
dix 0 furniftnng fuch Rules, whereby Students in chymifiry 
may be direded in their work, and true Operations diftin- 
guifhed from falfe ones. Fifthly, of Metalloflatichy , where- 
by the mixture of Mettals and Minerals maybe certainly 
known 5 together with a way of weighing the Proportions 
of moift and dry, exiflent in every Compound, as well Ve- 
getable and Animal, as Mineral. Sixthly, of Glafs- makings 
where is treated of the Nature of Glafi 5 of the Artificial 
Produdion of all forts of Precious Stones, partly from the 
Authors own Experiments, partly from the Commutation 
of bis Friends, and the Colledion of the heft Writers upon 
that fubjed. Seventhly, of Fireworks, where the Inven- 
tion and Preparation of Gun-powder is largely difeourfed 
of, and the ways of making Squibs, Fires burning in Water , 
0^2 ° and 
