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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