tains much in a little, each diftin$ flep . of • Rawociiiation or 
Operation hath a diftincfl Line : the Author putting fmall Let- 
ters for unknown Quantities a and great Letters for known ones? 
and the Method is fuch, that moft of the Book, if not all,, 
may be underftood by thofe not vers'd in the Exglifh Tongue, 
that are vers'd in Sfemus Algebra ; moil of the Queftions being 
propounded in Symbols, m& the prognefs of the work fo defcribed 
by the Marginal quotations, that for thofe exercifed in Alge- 
bra, that would tranfcribe a Problem in this Method, it were 
fufficient, only to take the Margent, omitting the wbrk it felf, 
till farther leifureis afforded to perform it. ,.' > 
Next^ as to the Mattery the Book eonfifts of many excellent : 
Problems $ fome whereof are fuch, as Baehet (that famdus Com- 
mentator on Diophantus*) either confeffeth he did not attain v 
or at leaft left obfcure: and others of them are fuch, as /the 
celebrated DesCartes and Van Sckooten, havfc left doubtt&i, as 
not being bf them throughly underftbodj And rfome ) b& them 
are fuch, as being unlimited, have &8 their Afrfwers cehairi ranks 
or feries of a4! poflible whole or rational Numbers^ whereby 
the Student may be accompliflit for the refolution of other Que- 
ftionsof the like Nature, 
Thirdly , as to the tMt 6i-immp&/ks 9 no Book but this 5 
extends it to above Ten thoufands-, fome of theufes whereof 
are declared in the T/>/^others in the ioohznd even in Common 
Arithmetkk, it is of excellent Ufe for the Abbreviat ion of Fra- 
ctions, and for giving of all ttfe di^uoP parts of a iNumber pro* 
pofed 3 ufefui for the Depmfiion and v Refofetion of ^qua'iafe § 
as is taught by Albert Gerard, And <Vm ( fahoottn:. ■-Befide% 
it is obfervabk in this Treatife , that the Author de* 
clineth the Exegefis mmerofa of Viet a,, which following : 
Writers ufe for the finding of the Roots of ^quntions* 
As to the Remaining part of the>BGok,as i^was puiblifhl'd by 
■sf ahn mnif&ahn m'H^I>kd-wsi&m jpay be givenjwfiy it was » 
omitted in this Englifti Editions , - : 
The Fir-ft Part of /it handles- thfe T^6l:ora of Circle^ about 
which Argument fome Epiftks of mfcarm ^e publiihed ia the- 
%imd Volume of hiftfifamms Let ters. 
