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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)
# Folio 90, page id 851708439:0114
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# After the first blank line: the recognised lines in reading order, one per line.

A I C E B R A. Cd f. LL1L2.
AIernA 5, 9A = a. B = B:
6 20A = B. a = B:
TT a = A. B=B
21
+
B. A.
8 16 A. B F A:
10 18 a +
TT~ 79 BF B.
X2∞ 20B F. a. B F
Conrerta T. ZL A. A = a::
A
2
B
B F
A. B
22~ 26 A.
2
ae
24 28 B. b
8. a = B
:: A + a. B L C
:: A + B. c
:: a = A. B = B
vide 10.
vide 13
ide 14
vide 11.
dc 12.
ride 9.
a. B. j: : A. B: : A = 8. P L 8.
B
. P
Invella
5
2∞ (22
3
23∞ (27
Mrerla 2T~ 20- a.
23
24
25
26 34
7
e
2836 B. B
HIXta T= 37 A  d. A -
:. B = e. D = 4
2 38 A F B. A- B:: a-
8 39  A. a A:: B F B. B- B
4 40B.  A. B A:: B qu e. B a
Alterna 37 4c A f a. B. F B:: A- - a. B B.
38 42 A. f B. a = B:: A. B. a B.
39 (4.3 a - A. B  B:: a A. B B.
40 44. B. F. A. B F a:: B A. B e.
Inverta 372 45 A - a. A f a:: B B. B L B.
38- 46 A. B. A ]B:: a B. a FB.
39 47 a A. a F A:: B- B. B F B.
40 48B A. B  A:: B. a. B. f a.
42 40B F B. A f a:: B B. A- a
42 50 a. F B. A F B:: a - B. A. B.
43 5E B+ B. a F A:: B B. a- A.
44 52 B f a. B F A:: B. a. B A.
Acteoque, s in trorum uno aliquo ralet proportio; valet de in tingulis.
Probationes breviter subjunctae, sume iniellectu non disticiles. Ad primam subo
jungitur explicatio; nempe A. a:: B. B, cancundem est (per detimitionem propor.
cionalium) ac = = - (quod paricer incelligendum est ubique): e (ductis uiris.
que in a B,) AB = aB, tactum ab extremis aequale facto ex mediis: quod pariter
libique valet.
Ad 2. PTOPTer AB = a B (quod jam ostensum est) divitis utrisque Per BB,
Fc - = -; hoc est A. B:: a. P. Aique haec alternatio semet probata; pariter intel
ligenda est in omnibus Alcernis post cicacis.
Ad 5. Pcoper = = - (per primam) eric (utrinque adelico vel tublato 2, )
B. B= B
_ B = a
e
B. B= B.
B. B+ B
:: B F A. B +c
D
25
+ B.
Per alternam g: quia a. B:: A. B. Sed
52B. F A. B
1 L B.
:: B F B. B
:: B = a.
B
:: B + B. A + a.
B. A + B
B. a :: B+ B. a F A.
A
Alcerna 21.
22 30 A =B.
33
B. A
. A
vlele 16.
la 230
-
FrC
a B. +B
B-