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# Title: [Johannis Wallis S. T. D. Geometriae Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis] Johannis Wallis S. T. D. Geometriæ Professoris Saviliani, in Celeberrima Academia Oxoniensi, De Algebra Tractatus; Historicus & Practicus. Anno 1685 Anglice editus; Nunc Auctus Latine. Cum variis Appendicibus; Partim prius editis Anglice, Partim nunc primum editis (shelfmarks Leibn. Marg. 100:1/2, Stück 2; Leibn. Marg. 100:1/2)
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C. O N O - C, W N F. U 5.
36. Magnicudines hujus Sectionis, sic deo occs,
R2-
DC. DR:: DC. DP:: CC. RP.
P.
aR = AC =
R. R FC
2 P = aR - Rp = A -  +
aR. aP:: RS. p0.
A. A-
EB:: V: P - 8.
AR = bR = bC
dA =DC
27. Si planum hoc (per D cransiens) secet punctum aliquod b, in recta AB,
priusquam pertinsat ad c in continuatione rectae CA, Vic. 6: Currae proprietas
haec Crit. Secetur planum hoc, uc prius, in eo, a quoris criangulorum RSa.
Frirgue, OT bB ad ba; seu OFBD ad be; Ieu, OF BD (Teu 2 F ) ad 2P: Sic
RS ad Ps.
38. In SpeciEbuS, Sic;
26
= s
BB. 6a:: bD. bp:: BD (== A C = = a 1). aP: . 15. p0.
V::
A:: V: 
c
V. ad
b.
 a
20. Vet eriam; concinuata DB donec SCCEt C. A (continaCaM) in C; prOpor
tiones crunt ut prius, in 535, 36.
40. Sed cum hac diverticate; Curra Dobq Sccabit axem suum in B; eriegue
pars bq ad concrarium latus axis, planique ABDC, in oppolico Solido. FL, Con-
TOnanIET, (PTOPEEF RP majorem, hoc catu, quam a R) crune ap e es quancita.
tes Negatirae: Cadente ap ultra verricem AB, qua SupponitE CuTa; e ps intra
planum ABDC, quae lupponitur Tupra.
AF. Veroque calu (sire DC Sccet, sire non secet verricem AB,) CurVX D∞C
Continuarae (prour continuari supponitur Colidum) occurrent icerum axibus suis
(Concinuatis) in s; tanco ulera c, quanto D est cira. EE si incerim AXis DS SC
cet verricem BA, ejulre concinuationem ultra A; curra secabic in eodem puncto
Axem suum, ec (iranticu tacto ad larus opposicum) eidem icerum occurret in S.
42. FIx Currae, uroque calu, (live De secer, sire non secet rectam BA,) si
recta C A diridatur in aequales partes d rectis DC; &e projiciantur Curra in idem
aliquod planum: comparebum uc in Ouinca Projectione, F15. 20. Ubi recta DC
concinuala ad s, remorentur a sede lua in plano ABCD (pro virancta contu
lione