( 5152 ) 
Advertifement. 
Nereis flow in the Prefix Body of Algthrt m Eng\i(li, rccm^ 
s mended thereto hfome of the Members of the K.Socittj.Compofed 
by th,t known Mathematician of London, Mr, John Kerfey. This 
MmhemmcalArt being that, by which ckefiy D^s- Cartes rendred 
hlmfelf fifamom, 04 did Vleta before him, andfince many of the Eng- 
liih French Dutch Natioyp h but n& Elements of it m an entire £&. 
dy b/ini yet well digeBedin the Englilh Language : this skilful Amhor 
hath taken the pains of d^ge fling the choicefi things of this Science, which 
lay difperfedinjmdry Books, that are eithtr very fern- ce and almoli m- 
procurable, or very dear : A work, which, as it will doubtlefs prove very 
ufefulfor all forts of Ingenious Students of the Mathematicks Eng- 
land, efpeciallythofe- that are not acquainted with Latin, French or 
Dutch {in which Languages the Books of thofe Sciences are mofHy ex- 
tant,) fo it cannot but redound to the honour of this Nation^ to have that 
done, whereby even the uncommon and abftrufer parts of Learning and 
Knowledge are laid open and made intelligtble to all fuch Capacities hsre, 
as are Lbvers thereof, . ^ 
Now as for the Encouragement of the Bookfellers,^ conjiderable nnm^ 
■ ber ofperfons have already fubfcribed^ow many Books of this PTori th^ 
wilt take off for themfelves and their Friends fo wa^ it thought fit, in 
this TraEl to give further notice, that, though a good part of this mr^ be 
already printed, yet if any others Jhall be defiro^^ to fubfcribethe ?i'p^r^ 
printed by the Book- fellers for fuch Subfcriptions, theyjhall be fill recei^, 
ved, addrefpng themfelves to Thom^LS Paffenger, &r Benjamin Hur- 
lock (living upon London- Bridge,) the Vndertakers of this Workf^ha 
will ajfurelili Subfcribers, that they Jhall not pay by Three fiillijf^s fo. 
much for each Book^, as they will be fold for in any op. The Terms 
which they are to have the Books, are \ li pence a jheet, which is the cheaf' 
efi price-, and the Money not to be paid but upon the Delivery efthe Boski> 
The whole will take up at leafl I'jo fheets^ 
To give the CaricHS a Jhort view of the Contents thereof ^ he mil find 
in the 
Firft Book^ • The four Species of Algebraic operations both in Intelef'S 
and FraElions : The Rule of Three in Algebraic ^amities : The Bx^ 
traUion of Roots out of Simple S^antities, as dfo out of a ^adrmc 
Quantity coijffiing of three Terms : The compleatingof an Algehrtiio 
S quare cmftfling of three Terms, when one is wanting S together with ^ 
Col'leRionef eafie ^efiionsto exercifethe preceding Rules : Of 
quation, and the ReduEiion of Equations : How to convert Analogies tn- 
to Equations, and Equations into Analogies ; The Refolution of Simple 
Equations exercised in 2S ^uefiions both in ^:i\mtt2\ and Literal Al' 
gebra: Tke Refolution of fifch Compound Equations, wherein there are 
iwedifferent Powers of the ^antity fought ^and the Lower ofthofeP^^' 
•■ ^ ers 
