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# Title: Erhardi Weigelii Sacrae Caesar. Maiest. ut & Com. Pal. Sultzb. Consiliarii, Supr. Artium Archit. Directoris Saxo Ien. Mathemat. PP. totius Academiae Senioris, Philosophia Mathematica (shelfmarks Leibn. Marg. 65; ZEN Leibn. Marg. 65)
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E
PROMMIETR IX DIETAMIMIBUS
C
d
ap
Regula de lrI
Proportionis Ocomctries.
iquatuor termini a. b. c. d. sint seometrice
preportionales; dacis cribus quarrum inre.
IS, (i sertine conuplicerur per secundum, es per
e
primum dividacur rancuptum. Ve= d. Vd
(D)Eiminor cerminus (praserrim qui secundi ter-
ciire aliguocus est) pracedens dividat secundum
Ccerciumre) quotus cerrium (sccundum) posten
cantuplicet. (2) Si non snc aliquori inter lei
admuttane camen parcium communemracionem
 menturam; tunc cractabis quosque binos,
(primum cum sccundo, primum cum cerrio)
pro tractiono, e reduces eam ad minores ter-
minos, erexione politos, (suppotuos) quosad.
hibebis pro majoribus. In quibus compracti
ex Icaliex a Pracuralis vis consistie.
GADTEEA
Y. Dumenus heterozeneus (eine Gorten. 3 ab11)
qui cerminum proportionis facie, toducendus
eA concinue ad speciem candem. Quod te,
quando species mejores per valoris nomen 1o.
cies continue cancuplicamus, de minuex speciei
notas suo cantuplo adjunsimus
2. Bini cermini homoloxi Cne primus cum
secundo, rei primus cum certio) pro le simpli.
Citer.
eIIt
Il
MI
i
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