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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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dOq
CuamoCentri Cravitatis. Cap. V.
IB. 200. Ractiorum series indices habent 1, 2, 3, 4, ec. series sectorum habebune indices
En 4, 6, 6, ec. adeoque omnium lumma, ad maximum rories Tumptum, loC el
doctrinam lubrertum s: multo tacilius, cribus verbis emendallet; dicendo, (pra
3, 4, 5,6, Suosandum (junta demonstrationis tenorem) 3, 5, 7, 9:) quo facto
non erit quod reprehendat. Sed de timul videbic, cotam illam quam ille julto
volumine De Spiralibus doctrinam habet; eodem Scholio summatim tradi: EF
quidem (utur hoc ille non Carim perspexeric) univertalius quam ab ipso tradica
elt. Cum enim dixeram, doctrinam illam de Parabolis d l’arabolocidibus, tum
ante cradicam, tum deinceps tradendam, Spiralibus accommodari poste, in quibus
Cre(CanE M P rectae, in angulorum PM Pratione duplicata, tripticata quadrupli-
cata, ec. illud ex caetera extendendum erat non modo ad alias rariones (stricte
loquendo) multiplicatas, sed et submulcipticatas, vel ex mulciplicatis de submut.
riplicatis uccunque compositas, vel eriam numero surdo exponendas. Ouippe il-
lud summatim intinuatum rellem; (quod de Parabolocidibus, magis particulatim,
tigura Spiralis, ad Sectorem conterminum; I L’ad 3, 5,7, 9, _c.) vidistet, tum
demonstrationi rim inesse; cum, emendato mendo MMCa Ca plode con-
stare. Adeoque quam ille prolixa retutatione (in luo de Spiratbus cractatu)
vel ance craditum, rel mox cradendum erac; ) Ouemcunque habeat Indicem Series
Rectarum MT, (incepruu caccum, lurdumre;) hujus Duptum, indicem elle
Seriei Timilium Secloru Lacs  Cleporum: Summamque horum, ad maxI-
num cories Cumpeum, (hoc CH, tisura Sprate ad Sectorem conterminum,)
esse, ut x ad indicem illum (duplum) unirare auctum. Cujus quidem doctia
unirertalis, nonnisi pars cst, cora illa quam habet ille de Spiralibus. Oux lamien
non laco dicta Tunc, ue, ab eo cradicis, derogacum cam. scul i Ollendam, quam
(nec adeo lonsum) quo paltecatul exponatur, materiam subministrare polti
sic corollariorum, Ferax generalis illa methodus; cum Scholium illud Unicum
justo Volumint.
ROP. XXIX
Ouxe de Spatio Crcloidali (PrOP. 15.) crac  Pallla BI
sunt et Spatio Cisfocidali accommocari.
Essocidis linex meminit Pappus lib. 3. prop. 4, 5. (pro duabus meciis propor-
clonalibus inreniendis excogitatae;) Cujus haec natura. Sic ADa SclICI
culus; cupto Centrum, C; DiameteF, A a; cui ad angulos rCCIOS MMLaL CMLV
Ducta ubiris Chorda AB, quam tecet C. D e  i ea lumacue, rectae Bl
aequatis HB; (ret AB = BF;) qua per omnia b Panla incedit curra AbD.
Cissoeides dicitur. Pademque eriam utira D punctum eodem ritu continuara (al-
ternaco cancum punctorum Bb situ, quae in D coincictun,) ea ct Guata hic vo-
Lumus. Cui Alympioca Mt ar recta, circulum in a concingens.
Spatium Cissocidalem dieimus, quod currae ABB, rectisque Aa ar, itetsacet.
incerminabule qu a ta  axtto mmen trnica.
Spatium