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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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DE LOGARLTHMIS. Cap.
Logarichmorum autem usum quod actinet. Duorum quorumvis, (aut etiam
plurium,) Numerorum Locarithini simul additi, constituunt Losarithmum, qui
Losar.
2, 39794
L 2,00000
3739794
Logac.
E, 3979
1, 87500
3927300
Num.
23
X100
2500
Num.
2
X7
1875
numero ex assumptorum numerorum continua mulii-
plicatione facto convenit. A. deoque invenco facti
Loparichmo, habetur ipse numerus tactus, ex Ca
none. Puta si numeri 25, Logarichmo 1, 39794
adjiciatur numeri 200, Logarichmus 2; horum a8
SregaTM 2 + F, 39749 = 3, 39794, eAt Logarich.
muS numeri 25X 10O ==2500. Pariter, EI numeri
25, Losarichmo 2, 39704, adjiciatur numeri 75
Losarictimus F, 87506; horum a8gregatum 3, 27300
est Logarichmus cui in canone convenic numerus
2875. Fodem modo; in continue proportionalibus
2, 2, 4, ec. cum ad inreniendum locum sexasesi-
mum quarcum, numerus F, concinue mulciplicandus est in 2 lexagies et cer; (1
nuMerI F LOBarichmo 0, 00009, adjiciacur numeri 2, Logarictimus 0, 30103,
sexagies _ ter, (hoc CH, 63XO, 30203) prodibit 18, 96489; cui juxta Capo-
nem LOTATIChMICUM CONVENIEE MUMCTUS 9223300000000000000, Circiter; vel
Taltem 9223400000000000000; vel pocius inter ucrunque: neque enim in tam
vastis numeris expectandum est ut Canon Logarictimieus majori avecbis. rem
En Divi- Drocat.
LOGar.
2900000
2, 69897
0,30103
2,69897
-0, 6989
2900000
Logar.
4779C5F
29 3979
1, 87506
2,5185Y
LOgar.
0,69897
+0,69897
ETum.
100 (2
50
50 (20
Num.
75) 0rer. (3:
+0,60897
2900697
Num.
225
Similiter; Si ex numeri Dividendi Zoearithmo
auseratur Loearichmus Divisoris, prodibit Locarith
mus duorientis. Si autem plures continue Faciendae
Sinc diritiones; ex propolici numeri diridendi L0-
Barichimo, auterendi Tune Logarichmi omnium con-
tinve dividencium. Duca, Si Cx numeri 100, L082-
richmo 2,00000, auteratur numeri 50 Logarichmus
2, 69897; manebit 0, 30203 Losarichmus Ouorien-
eis 2. Si ex numeri 50 Logarichmo 1, 59897 aute-
Y3LUE 0, 60867 Loparirmus numeri 5, mancbit r.
Logarichmus numeri 20. Tiem SI Cx numeri 67875
Losarichmo a7925F auterantur cum 1, 39794 L0
Garichraus numeri 25; cum X, 87506 Logarichmus
numeri 75, (ex canone depromendi;) manebit
2,5285F Loserichimus numeri 33, duabus dirisio-
nibus per 25 e 25 continue tactis provenientis. EL
timiicer alihi.
Aeque hinc similicer sequitur; st numeri cujus-
vis Focarithmus dupletur, tripletur, quadrupletur,
∞C. provemet Loearithmus duadrati, Cubi, BI
quadrari, exc. expositae ractiois. Puta numeri 5
Logarichmus 0, 60897 cxiplatUS, REMPC 290969F
3X0, 60807-0, 69897+0,698970,69897
est Locarichimus numeri 225 = 5X 5X5.
 Rad FE, vice verta; Si numeri cujusois Learichmus suerit bisariam, crisariam,
cum ex quadrisariam, ec. divisus; prodibit Loearichmus radieis quadraticae, cubicae, bi-
tractione. quadraticae, 55. Puta 3) 2,0069+ (0, 69807, erit logarictimus numeri 5 = V3 T25.
Fractio. QuOTieS aUtEm OcCurrI numerus minor per majorem dividendus unde oritur nu-
num L0-
sarichomi. LO82r.
6730103
--0. 47712.
-0, 17609
NuM.
 2 (3
merus tractus, qui unitate minor elt; prodibit 19.
sarithmus Negatirus sire Ablacicius, quippe minor
quam 0,00000 Loharichmus unitatis. Puta 3) 2 (
numerus, logarichmum Dostulabit = 0, 17609. qui
nempe provenit subducto logarichmo numeri 3, ex
locarithmo numeri 2.
Oui plura petie de Logarichmici Canonis sire Constructione sive VTu, auchores
adeat supra lauctatos, Nepperum, Brisgium, Gellibrandum, aliolque qui de hoc
negorio ex protesso scriplerun. Susticiar nobis, operarionum Logarchmicarum
originem ee lonrem indicealte.
rithmo-
rum usit
in Multi-
T
plcatio-
hohe.
In Pote-
Cenest.
stabum
Prime