C"0 
ftions made therein, by the vertue of Salt and its Auxih'a- 
ries, the differences whereof are largely difcourfed of, to» 
gether with the way of extrading the fame. In particular 
of Saltpeter^ its Generation^ Nature, Vertues ^ of the way 
of making Gu^fowder^ and the various ufes thereof s as alfo 
the Nature, QualitieSj Preparatioo^ Medical and other ufes 
of Alume and Vitriol. 
In th^fevemh : Of {omQFoJJilf^ as Sand, Gravel, Earths, 
and their various Differences, Qualities, ufes Economical, 
Ghymical, Medical : together with theftrange varieties and 
changes happening in the Earthy and theircaufes^ as alfo 
the requifits to Agriculture^ 
In the eighth : Firft, of Stones^ their Origine^ Concretion^ 
difference of Golours 5 and in particular, of 9 ems and 
their variety, caufes of generation, traufp^rency in fome 
and colours in others 5 as alfo of their various Figures and 
Piftures, by Nature formed both in common and precious 
Stones, with their Caufes. Secondly, of the Transformation 
of Juices, Salts, Plants, yea of Beafts and Men turn'd into 
Stone t together with the generation of Bony Subftances 
under Ground, by many efieemed to be the Bones of Gjants ^ 
and of Horny Subftances^ taken for Vnicorm horns i as alfo 
of FoQih wood and Cods, Thirdly, of Bitumimns Flomerf^ 
UpH Asbejiof^ Amber ^ and its EleSricd vertue s together 
with the way how Infeds, little Fifties, and Plants are In- ^ 
tombed therein^ Fourthly, of Subterraneous Animds ^ 
Moles, Mice,BirdS| Dragons 5 where is alfo treated^ of thofc 
Animals that are found in the midft of Stones. 
In the ninth : Firft, of Poyfons^ their primeval Origine 
from Minerals, and their accidental Generation in Vege- 
table and Animal Bodies, together with their diflferences 5 
where 'tis difcourfed, notonelyhow Poyfons maybe bred 
in Men, but alfo, how the Poyfons of fome Animals do in- 
fed and kill Men 5 and, where the Venom of Vipers lodges, 
and how mad Dogs and Tarantulas fo communicate their 
Poyfon^ asthat itexfcrtsndtitsnoxioiifntfs, till after fome 
I 
