jffcions of Matter, th eQualites, that difference particular Ba« 
dies, refult : whence it may be rationally concluded, that one 
kind of Bodies may be tranfmuted into another; that being 
ineffedt no more, than that one Parcel of the llniverfal Mat- 
ter, wherein all Bodies agree, may have a Texture produced in 
it, like the Texture of forne other Parcel of Matter, common to 
them both. 
To this Hypothecs, is fubjoin'd an Examination of the Scke* 
Uflick opinion of S uh [i antial Forms ; where the Author 3 F?V/$$ 
States the Controverfie; next^g ives the Principal reafons, that 
move him to oppofe that Opinion; then , anfwers the Main 
arguments employed to evince it ; further , aligns both the 
Firfl, Caufe of Forms ( Cod 5) and the Grand Second Caufe 
thereof (Local Motion:') andlajtly, proves the Mechanical Pro- 
duction of Forms ; grounding his proof, partly upon the Man- 
ner , by which fuch a Convention, of Accidents , as deferve to 
pafs for a Form, may be produced; as that the Curious Shapes 
of Salts (believed to be the admirableft Effects and ftrongeft 
Proofs of Subftantial Forms') may be the Refults of Texture - 
Art befpg able to produce Vitriol as well as Nature: partly i 
upon the $oKib\\ity oFReproducing Bodies by skill, that have 
been deprived of their reputed Subftantial Forms : Where 
he alledges the Redintegration of Saltpetre , fuccesfully perfor- 
med by? himfelf; though his Attempts, made upon the dif 
fipation and re-union of Amber, Alum, Sea-Salt , and Vitriol, 
proved (by reafon of accidental hindrances rather, than 
of any impoffibility in the Nature of the Thing ) lefs fae- 
ces fill. 
In the Second and Hiflorical Part, the Author, appealing : 
tOjthe Teftimony of Nature, to verifie his Dodfcrine, lets down,- 
both fome Ob fey nations , of what Nature does without being 
over-ruled by the power and skill of man ; and fome Expe- 
riments , wherein Nature is guided, and as it were 5 maftered by 
Art, 
The Obfervations are four. 
1* The Firfl is taken from what happens in the Hatchings f 
