Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

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4034HERONIS

XXI

In ſpondea, hoc eſt in vaſa ſacrificii injecto quinque
drachmarum numiſmate, aqua ad inſpergendum effluit.

Sit ſpondeum, ſive theſaurus

27[Figure 27] A B C D, cujus ofculum A ſit
detectum: & in theſauro ſit vas
F G H K habens aquam, &
pyxidem L, ex qua canalis L M
extra feratur: vaſi autem appo-
natur regula recta NX, circa
quam alia regula aptetur O P,
habens ad O platyſmation R pa-
rallelum fundo vaſis: & juxta
P ad S habens operculum pyxidi
L congruens, ita ut aqua per
canalem L M non fluat: ſit au-
tem pyxidis operculum gravius
platyſmatio R: & utriſque vi-
delicet numiſmate, & platy-
ſmatio ipſo levius. Cum igitur
per oſculum A numiſma injicia-
tur, incidet in platyſmation R:
& deprimens regulam O P incli-
nabit, extollet autem pyxidis
operculum, ita ut aqua fluat: poſtea excidente numiſmate rurſus oper-
culum pyxidem obſtruet, ut non amplius fluat aqua.

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