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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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a
DE CTEOD ESI
Nonnunquam vero sola Figurarum Mecamorptiosi res erit Pacilitanda. VE, Si De fieu-
menturanda sic tigura Peticoides dicta (linea Temicirculari concara BCD, e dua-
bus quadrantalibus conrexis, AB, AD, cerminata,) aequabitur illius area vel area
quadrari ABC. D, vel Parallelogrammi BDP P. Pancundem enim sive Oua
draco sive Paraltelosrammo ex una parce accedie, quantum ex allera parce au-
Fextur.
Ec similicer, Funula A E DF quae areu qua-
drancali AF D majoris, e semicirculari AFD
minoris circuli continetur, aequatur criansulo,
ADC quadranti inseripto. Oc ex Fippocratis
Chii quadratura Lunula nocum est: et appo.
Sico Schemace exhibetur. PTam propter AB9 =
(AD9. F DB9 =) 2A D 9 adeoque semICIr-
culum majorem minoris duplum; Crit AD F sC.
micirentus aequalis quadranci ACDF; dempco.
que communi sexmenIO ADE, relicua lunula A F. D F retiduo criansulo ADC
aequalis.
Fr limilicer alias non raro Paciendum eric. Ouod breviter insinuale sutticiac.
Aeque hoc quidem omnino urile est in figuris maxime irresularibus, quorum am-
Dicus neque rectis neque circularibus lineis cerminatur. Sufticit quipue practico
Geometrx, si quam fieri porest proxime, hic addendo, illic cancundem detrahendo.
ad huic aequalem rectilineam redueae. Ouod quo tat, consilium in arena capiendum.
Acque tactenus quidem universae prope planorum Geodaesix fundamenta brevi-
ter tradidi. Ouo, cum Musciplicationis cum Diritionis exercitium oltenderem;
rum Aritimetices in cicometricis ucilicacem, et viriusque simul seienriae astinica.
rem patclacerem.
Ci AP. XXV
Numerorum invicem comparatio. Aliarum item quantitatum: sed nonnisi
invicem homozenearum. Comparantur tum quoad Differentiam, tum
quoad Rationem. Flarum comparationum ab invicem discrimen. Dif-
ferentia subductione investigatur: Ratio, Divisione; sed ea tantum quae
est quantitatum homorenearum. Duantitatum ad heterogeneas Applica
tio, quatenus ad Divisionem referenda sit. Rationes ones vie hom-
genea: non item omnes Differentiae, Ratio an ad quantitatem, un potius
ad Dualitatem pertineat. HINNOrS, quid. Procressio Arithmetica C
Geometrica: Continua, Cs Disjuncta. Proportionalium notatio. Pro
portio Tlarmota.
cies, sire pocius Parres; Additionem, Subductionem Mulciplicationem, d
Divisionem: quibus, uc intlrumentis, quae deinceps cradencur sunt perapenda.
Finc
ta
orphose.
erum
PRadidimus, in Praecedentibus, celebres illas Arichmeticae Practicae sIve Spe-