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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)
# Folio 238, page id 851387705:0258
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F D IC A F
C
hoc erincie: Obi supponitur recta a x non jam gruros incalere, sed ad dia
metrum convergere, eique tandem occurrere, ut in figuris duabus praecedenci-
bus, in puncto C. Punctum aurem D interius (quolehaucundem deortum d p di-
que DOi O, quod inra curram cadere erici c deouall.
stare supponitur quantum inde distat D alterum Turlum) appello, distinctionis
erso, S. Eique ordinatim applicata sC, occurrere supponitur curra in C, rectae
Sampeo AD = 5 AP. (Aaboque P D = 8AP.)
Erit Pa. DO:: VCAP. VCAD:: VCZ. V05:: 2. =
Cumque sit P a. DO: : PF. DC: : 2. Z :: 3. 3.
Sitque AP. PF : : Z, 3.
Eris AP. DC: : T. 3
Et AP. FC(= DF = PD = DC):: c. (3-8 =2 -18.
Tum quia AP. PC: : X - = 13. 2Y3 = 2: : 2. 4. V3 + 5. (ut sup. demonst.)
Erit FP. DC:: 3. 4 Y2 +5.
Et AP. FC(= F P F PC):: T. 4V 3. + 8.
E quia P C. P C:: a C. a X:: PC. PP: : 4V 3 + 8. 8::
:: 4. Y 3. +5, (3 in: 4 V 3. +5
Erit AP. PP:: F
25Y3 - 20
4V 3 F 8 t,
15V3 = 10
Erso AP. DBC = DP F PP):: 1. (8 + 
Ft AP. D5 = 2pD: : x. 25Y3 + 18
10
(3
Ft AP. C5 (= CD + D8):: x. (3 f 25
2
0
32
TE
15 3 f 10
15V3 +42
linc
ul 1
11
pu
vid
v
habene
B12
102
e