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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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O N O - C. U N F I 5.
57. Si planum hOC (per A EanTenS) secet rectam C D, I alu PHNCIO P
anrequam ad d perreniat in (continuata) BD, Fic. 9. Curra Ps hac
erit. Secetur planum idem (uE prius) a quoris ertatigulorum LSa; CAcque. VF
CP ad CR; seu OF AP ad AP; Teu aR (= AC) ad aP. vd 10 udt 10.
58. In Speciebus, AC;
= 0
RS = V: R = c
AR = AC:
CP. CR:: AP. A R: : a l (= AC). 2P: : 
2. =1.: Y: R - 8.  V: R - 0
59. Vel etiam; Continuata AP, donec secet BD (continuatam) in d: PTOBOT.
TiOneS exUNE, uE priuS, 5 55, 56.
60. In Sectione hac; Curra d= A non sCCaL Axem Cuum in P (ut in Sectione
quarta e quinca, in b;) Sed permanet ex eodem ejus latere, (supra planum
ABDC) donec eidem occurrat in A. Si vero lupponatur Solidum turtum con-
tinvari in Ce oppolito: Curra secabit axem Tuum in A; indeque ex latere con-
trario (intra planum AB D C:) concinuabitur, donec eidem iterum occurrat in S.
Rtque in ea continatione, prO C R = f C, habebieur CR = = c; (quia jam R
cadic ex contraria parte puncti C, in recta DC continuatione. RL consequen-
cer, Ordinatae ultra A, (utpore ex contraria parte,) incerprecandae Tunt Nesa-
cive, cum Signo -; ue qua cira sune, interprecanda sunc Actirmatire, cum
Signo +.
6T. Vrrogne catu, (Tire A d Secet, sive non Secet, CD, ut in P; hoc est
sire punctum d cadat supra, sire intra D;) Currae do R concinuatae (pro simili
concinuatione Solidi,) secabunt axem Tuum in A; eigne (Continuato) Occurrent
icerum in S: tanto ulEra A, quanco d est cirra. Ordinataque ultra A; cadem ip (X
crunt qua citra; sed cum contrario signorum + -.
62. Curraeque do As, in unum idemgne plantum cranstatae, (Si diridi Suppona-
tur BD in partes aequales in punctis d,) comparebune uc in Seprima Projectione,
F18: 22. Obi recta d A concinuaneur ad s: acque cum cransteruneur (quo ritetur
contulio) a proprio suo sicu in ABDC plano, ad rectam A C ContInIALaM. RC.
etaeque eo eildem ordinarim axplicancur in hac posicione, in ea ratione ad RS, qua
est 2e ad a R.
63. Magnicudines in hac Projectione, sic detieno in Speciebus;
AB = CD = K
CR = +
1
R =
Ab. Aa:: CD. CR:: Bd. a
aR (-
64. In