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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi; Opera Mathematica (shelfmarks Leibn. Marg. 100:1/2, Stück 1; Leibn. Marg. 100:1/2)
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Craristimis Viris, et Machematicis
OR
Publicis attronomia is, alut Saviliano
in Academia Oxoniensi, allero resamensi in Cre-
Bamense  Lu.
Ccom. Prot.
AL
terc cimilo innoreleit. Nempe Sccltores Conicas (rem reterem) nora
mechodo tradit. Erac seilicet Conteorum tradirio Veceribus jam olim
coenita, Apollonio Perea recultior, et quidem in mechodum jam tum redacta:
ul nec iple ditticetur Apollomus, de aliunde constat: (Nam Archimedes ipse A-
Pollonio antGUIOE, Flementa Conica LAPIUS MCMOTAT:) Sed ab Apollonio, (cu
jus Conicorum libri quallior lupesuu) u meliorem formam redacta, ee inlieni-
ter aucta, (quod in causa Fuisse credimus cur priora illa Elementa Conica pe
xierune.) Anciquiores enim illi, Coni solius Recti (quem solum Ruclides defini-
rerac) contemplationem aserelli, non aliam videneur iplius sectionem contide
rasse quam quae tc a plano quod ipsius laceri alicui rectum Ec; quod propterea
in Cono Rectansulo (eo nempe cujus oppolita lacera ansulum in coni verrice
rectum comprehendunt) opposito laceri maneret parallelum; in CionO ACutan-
Sulo, lateri opposiro occurreret; in Cono autem Obculansulo, ab, eo recederet
Atque hinc curras cribus illis sectionibus emergentes, appellabane, Coni Rectan-
suli, Coni Rencanguli, e Coni Obculanguli, Sectionem; quibus eclan Homini-
bus ulttur Archimedes. Sed e proxierca Conecton lau HOMTMIOUS, 10-
De Scaletiao, Ve Mclatas, non alicer traclabant esccant ut Llcclatcu portiones:
Vid novi serat (Claristimi Viri) Libellus ille, ab ipso Racim quem prae
las erectas incellisebane, non item Scalenas; (ut d Biametri nomine, IOHMI 
celligebant AXem; e Verticis Sectionis nomine, axis rerricem;) sectiones quiv
quod  o Pallles LcesHgenau CIIL) SOuS autem, praeter
Conum Rectum, etiam Scalenum suITOduxI, (d tortan primus,) e prota
Com detinitionem at Fuclide traditam (ue qua Toli recto ConreVaL) I altalt
(quae etiam Scalenis conreniac) immucarit. Sed neque tolam illam plani secan-
e pontionem (quae coni lacus recte secat, hoc ett, ad angulos rectos) sed aliam
quamlibet admisic; adeoque Coni cujustibet (sire recti lire scalcus) sectionett
ouamlibet plano utcunque potico factam, considerarit. Adeoque ee sectionum no.
mina prius recepta necesse habuit immutare, (quippe e Sectionibus cribus quam-
dibet invenit cuilibet cono inelle, prouc planum secans alio atque alio litu po-
ficum incelligatur,) quas igitur alii, Coni Rectanguli, Coni Acutanguli, Coni
Obculanguli, sectionem, appellaverant; ille Parabolam, Ellipsem, Flyperbolam
dicendas roluir: quae nomina ab illius prOD. TF, X2, 23, libri primi, originem
duxerunc; atque hactenus a Creometris retinentur. Sed et cidem Sectioni plures
Diamerros, inesse voluie, prour hujus illiutre coni sectione facta intelligatur;
quarum singulae sibi peculiares habent de vertices, ec Ordinarim applicatas, _ L. a-
cera recta. Ac tatendum incerim elt horum etiam non pauca, urur aliis nomini
bus, aliis ancea, Palcem Archimedi, innocuisse: hoc tamen diserimine, quod quxe
Comi Sectiones (nempe inclinata) ab Apollonio dicuntur, exdene ab Archimede
dectionis (erectae) Portiones diei rideantur; (ee Timiliter de Conoidibus:) ut
in iptius libro de Rectansuli Coni Sectionis quadracura (cui de quadratura pa
rabolae