f 6073 ) 
■to "th^i^P^ni^ tr^atsof the way of Befiegtng^^tSy hjMot^ 
Idog upi breaking of Grouaasbpeniogof t^eache^^fauHajD^of 
Batteries^b^ingi^^goii GallcTics^and Miniog. 
The e/^A/A delivers in Ef^ghJfj zOioxt Difccurfe writrco ia 
Frenchhj Moofieur de la Mont, of Fortificatioo ofFeDfive aod 
dcfeofive, printed uFaris tBy u T^o which is annexed the Ta^ 
hie <^^^gl^^i^^^ 
SoimucboHthis Trad^ which, we hope^will in due tiaie,^ be 
fbllow'd by that large and coftly^pieceg the Author ftith 10 
the Epiflle Dedicatory he is now prepariog.of all the Fi»r^/ of 
Jortificatimsy2ind Modks oi all forts of Engim c/zr^ryof what 
nature ibcvcrjin ftirPrintSjthathave been diade oriojireoted 
this day V A ycrydcfir^blewbrki^iahe hafteQing of which is 
my touch wifli^t by the GuriGu^» 
III, the Elements cf that Mathematical Scieme call' ^^^^ 
hf, Jphn Kerfey. London 1 673. in fol 
. . ■ ■ ^ V -* ^ « J . . 
IN N\ of thefe TracSts^an jidverlifemnt was giviefa of 
a Body of -^/?^6r^ prepared for the Prefis by that emineDt 
AlgcbraiftiMnjfoA^ iCerjJ^jCohfi of four Books. We now 
giyeootice to the Reader^ that the l'ipa firft of th^m are fiace 
actually printed arid now expofed to (ale* ?^ As: for the Argu- 
ment qf them fin^ce a pretty targe acebunt 'was then rendred 
concerning them in the faid Traft, we (hall now only acquaint 
thcRcaderj 
Firfi^ that the Author will be foiap|I tp^^^I^ (o folly and 
pjainly handled the niatterjthat pn/ordihafy c 
any other Teacher niay attain^this excellent i5nowlf!dg, which 
extends itfelf through all the patjts of the Mathecn^^ tickj^jbeiog 
the Very Art of Invention of inntiirneraBleTheorep and their 
Dctnonftrations both in Arithmettck and all parts of Geome- 
try ^whetheifPlairijGurvi-iinear^fdlidojr^f^ 
' ' SecondlflxhdLt'Ul^cvc^s oiiny Ho wprvder^^ {bme.^fbrr:'^fn 
Nations areio feEtile,^nd the Engli(h (p barrfti pf godd'M^- 
thctnatical Books in their Mother^ tongue, the r^eafoo thpreof, 
and of thelofs of many menslaborious and excellent wriciHgs 
Md ioventionsjisi lhat tbcBookfellers being difcouraged by the 
