Piasr/y of them, keeping himfclf thereby difengaged from a- 
dopcing an /^jf^fiiifi^//, in which perhaps he is not fo through- 
ly fatistied, and of which he does not conceive himfelf to be 
neccflitated to make ufe here ; and accordingly forbearing 
to employ ArgumentSithat are either grounded on^or fuppofe 
Jtoms 5 or any Innate belonging to them s or that the 
EfTence oi Bodies conlifts in Extenfion 5 or that a Vacuum is 
impollible j er that there are fuch Globuli Ctelefles , er fuch a 
'Materia Subtilis , as the Cartefians imploy to explicate moft of 
the P/C^^/^ewf;?^ of Nature. 
The Treatife confifting of a Speculative, and an Hifiorical 
part 3 the Author, with great modefty leaves the Header to 
judge whether in the Firjl part he hath treated of the Nature 
and Origine of Forms and Pluralities in a more Comprehenfive 
way 5 than others ; Whether he has by fit Exanaples, and other 
means , rendred it more intelligible , than they have done : 
Whether he has added any confiderable number of Notiom 
and Arguments towards the compleating and confirming of 
the propofcd Hypothefis : Whether he has with reafon difmifled 
Arguments unfit to be relied on; Tindi Whether he haspropo- 
fed fome Notions and Arguments fo warily, as to keep them 
from being liable to Exceptions and Evanons , whereto they 
were obnoxious, as others have propofed them. And , as to 
the^^^i?«^and Mijlmcal part, he iscnclin'd to believe/ that the 
J^eader will grant, he hath done that part of PhyficJ^s, he is trea- 
ting of^fome fervice, by ftrengthning the doctrines ©f the 
TSIew Philofopby ("as *ti$ call'd^ by fuch particular Experiments^ 
whofe Nature and Novelty will render them as well Accepta- 
ble as Inftrudrive. 
The fumme of the Hypotlefisi fully and clearly explicated in 
the Firfi Part, is this ; 
That all Bodies are made of one Catholic}^ «»«///r,common to 
them all, and differ but in Shape^ Si^y Motion or J{efi ^ and 
Texture of the fmall parts, they confift off^ from which Affe- 
Aions 
