Ciop7 J 
where the Sexagefimal is yet in ufe ; Which doth in good 
meafare, nowobtain^ ('and, daily more and more.^ And 
would, no doabt, have obtained abfoiutely.- e're this 
time, did not the Old Tables heretofore Calculated, 
make it fomewhat neceffary to retain ( in part ) the Sexa- 
gefimal. 
The other Improvement is that of Logarithms, which 
is of great ufe, efpecially in Jfirofiomical and other Trigo- 
nometrical Calculations 5 introduced by the Lord Neper, 
and perfeded by Mr. Briggs (about the beginning of this 
Century.) The ground and pradice of which is here de- 
clared. 
And thefe things, though they be not properly Parts of 
Algebra^^VQ yet of great advantage in the practice of it. 
The firft Printed Author which Treats of Algebra is Lu- 
cas Pac dolus ^ or Lucas de Bur go, a Minorite Fryer, of 
whom we have a Treatife in Italian, Vnwtcd at Venice iw 
the Year 1494, ("foon after the firit Invention of Print- 
ing,) and Rc-printed there, a while after. 
But he therein mentions Leonardus Pifanus, and divers 
others more ancient than himfelf,from whom he Learn- 
ed it ; but whofe Works are not now extant. 
This Fryer Lucas ^ in his Summa Arithmetica l Geome- 
trica, (for he hath other Works extant) hatha very full 
Treatife of Arithmetick in all the parts of it i in Integers^ 
FraUions^ Surds, Binomials j Extradion of T{oots, 
draticJ^, Cubick^, &c. and the fcveral Rules of Proportion, 
Fel!ow/hip,aho\izAccompts,A/ligationjZnd Fal/e Pojltion,({o 
fully, that very little hath been thereunto added to this 
day;) And (after all this) of Algebra, with the Appurte- 
nances thereunto, (as Surd l^ots, Negative ^antities. 
Binomials, J^utsljniv erf al, the ufe of the Signs Plus AH- 
nus, or ~H — , C^c.) astar as ^adratic\Equations reach, 
but no farther. 
And this he tells us was derived from tliQ Arabs, (to 
whom we are beholden for this kind ofLearning,)vvithout 
11 r a talking 
