( 7H ) 
The Eighth Book of theie Gonicks, was wanting in the 
Gruk Copies even before the Tradudion of them into Ata-- 
. bick lhebit: rf>wt it having been obferv’d that there 
was a very near relation between the Arguments of the 
Vllth and Vlllth Books, for that the fame Lemmata of 
Pappus were common to them both, which are different to 
all the reft, it feemed that the Tbmemata Diariflica of the 
Vllth Book were defigned to determine the Limits of the 
Yrobkmata Diorijmena of the Vlllth; and therefore fuppo- 
fing whac thofe. Problems might have been, and their Order 
from that ^of the faid Theorems, Dfj has.in XXXlil 
Propofitions given the Analyfes Synthefes of. them, after 
the Method of the Ancients, every where, following the 
Steps of Apollonius to be found in his Vllth Book. This he 
t calls Qonicorum Liber OBavus rejlitutus^ and may ferve the 
turn, till fuch time as the Original Eighth Book come to 
light ; if that be not now to be defpair’d of. 
Becaufe of the Affinity of the Subjed, he hath fubjoin’d 
the two Books of Serenus AntiJJ'en/ts, the Greek Text of 
which was never befoie in print. This was procured by 
the abovefaid Reverend Dean of Chriftchurcb, Dr. Aldrich^ 
in a collated Copy of three Manufcripts, extant in the 
King’s Library at Paris, and by him, according to his wont- 
ed Goodnefs and Generofity, freely communicated for the 
ufe of the Publick. To this alfo is added the Latin 
Tranflation of Commandine, which in many Cafes needed 
Caftigation. 
As to the Authors themfelves little needs be faid, they 
having flood the Teft of fo many Ages, and been highly 
valued by the Learned in all Times, efpecially the Conicks, 
juftly efteemed a Mafterpiece in the Geometry of the An- 
cients : So that it may feem ftrange, that a Book fo ex- 
celling in its kind, (hould not till now have been printed 
in its native a Tongue fo peculiarly adapted to Mathe- 
matical Purpofes. But this preient Edition may make am- 
ple Amends, the Paper and the Elegance and Corre<ftnefs of 
the Print being remarkable. The Book is now to be had of 
Mr. Chrifiopher Bateman in Pater-nofier Roiv, London, 
Printed for and J, Innys, at the Princess Arms 
in St. Paul's Church-yard. 1718. 
