Means, and Doubling the Cube, in Prop. 3. to 6, 
3. And albek z^Cubkk <iA.qmton$ may be folved, either by 
the finding of two Means » or ihtTrijeBion of an Angle j yet he 
Ihews the Extent of. his Method, in finding out other lafinite 
ways for the doing thereof, from Prop.y.to 12, 
. 4. The I'rife^ion of Angle by a Circle mi UyferhoU, Prop, 
13, and by ^FmhoUm^^zd tbereofjProp.ij. And the finding 
oitwo Means by a Circle aod PdraheUy Prop. 1 4. 
la the Second part of his Book Be Analy fh the Author firft 
gives you the Analjfis or ^/j-^^r^, whereby all his General Mc-- 
thods of finding tmMeam were invented. And afterwards, for 
the advancement of Geometry, gives you the Analjfis, that re- 
lates to his f articular Methods, as in cafe you would find but one 
of thofe Means, and afterwards byan eafie operation the other. 
After that^he comes to ftiew, how the Effedlions or Delineations 
{ox Cublck Equations vjtx^ invented 5 And then, how thofe 
Ccnftru6i:ions tor the T rife^ion of an Angle were found out : the 
ufe whereof is, to give Lines in a known meafure, equal to the 
quantity's fought, wherry either to give aid in the eafie obtai- 
ning theSrft and fecond figures of the root, or controul the 
fame. 
Lafllp he comes to treat of General Conftrudions for the re- 
folving of all Problems, without redudlion of the ^Equa- 
tionspropofed 5 and fheweth a general Coaflru(9:ion for all C^.- 
iickmd Bi-qua^iratick M<imt\on% by ayd of a Circle and a Fara^ 
hoky letting Ordinates fall from the points of laterfecSlion on 
fome Diameter of the P^r^^^^k (which is always parallel to the 
Axis,) whereas Des C^^r^^^ letting thofe Ordinates always fall up- 
on the Axis, was forced to prepare and alter the ^Equations by 
driving out or taking away the fecond term (which is next the 
higheft, ) that the fum of the Negative roots might- be equal to 
the fum of the Affirmative oms^ as his Conftru^lions always re- 
quire. 
But how to find out all the variety's of folving a!I SoUdPto^ 
blems by the Cmick SeBions, hear the Author to the Reader : Me- 
ihodum non adfcripfi, turn qmd gratius ac utilim futurum artitra^ 
tmfumy ft earn ipfe privato Studio, ex hifce Speciminibus eliceres, 
turn etinmquod jndiciumtuumde totarepr^fiolarer^JDecnvi enim^ 
& 
