Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

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7872HERONIS Eadem & in ſiphone Eintelligantur. Oportebit autem humidum ſenſim
infundere, ne aër, qui in ſiphonibus comprehenſus eſt, ſumma vi expel-
latur.

LVI.

Cucurbitulæ conſtructio, quæ ſine igne attrahit.

Sit cucurbi-

63[Figure 63] tula A B C,
qualis fieri
conſuevit, ha-
bens in medi-
o diaphragma
DE: & per fun-
dum impella-
tur ſmeriſina,
cujus fiſtula
quidem exte-
rior ſit FG, in-
interior vero
H K, quæ fo-
ramina L M
ſibi ipſis reſ-
pondentia ha-
beant, extra
cucurbitulam
locata. Oſcula
autem ipſarum
interiora aper-
ta ſint; & fiſtulæ H K exterius oſculum obturetur, epitoniumque habeat.
Sit præterea ſub D E diaphragmate aliud ſmeriſina N X ſimile ei, quod ad
fundum, habens foramina reſpondentia intra cucurbitulam; & ſimul per-
forata cum diaphragmate D E. His conſtitutis convertantur epitonia
ſmeriſmaton, ita ut foramina, quæ ſunt ad fundum ſibi ipſis reſpondentia
ponantur; quæ vero ſunt ſub diaphragmate permutentur, & claudantur.
Itaque cum vas DC aëre plenum ſit, admoventes ori foramina L M, doſſu-
mus aliquam aëris partem ſugere. Poſtea rurſus convertentes epitonium,
& non amoventes ab ore ſmeriſma habere rarefactum aërem, qui eſt in
vaſe C D. Hoc igitur ſæpius faciemus, quoad multum aëris ſuxerimus.
Deinde cucurbitulam carni apponentes, ut fieri ſolet, foramina, quæ

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