Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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5751SPIRITAL. LIBER.
XXXVI.
Conſtruitur autem & ſatyriſcus ſuper quadam bafi, utrem
in manibus tenens, cui adjacet labellum;
& infuſo in ipſum
humore, ita ut repleatur, aqua per utrem in labellum influet,
&
non ſuperfundetur, quouſque tota per utrem aqua eva-
cuata fuerit.
Eſt autem conſtructio talis.
42[Figure 42]
Sit quædam baſis A B undique præcluſa, ſive cylindrica, ſive octagona
ornamenti gratia, quæ diaphragmate C D diſtinguatur, &
per diaphra-
gma protendatur tubus E F ſimul cum eo perforatus, &
ab operculo parum
diſtans:
per operculum vero impellatur tubus G H paulum excedens in
partem ſuperiorem, qui habeat labellum ſibi impoſitum, at que à fundo
tantum diſtet, quantum ad aquæ fluxum ſit ſatis:
coarctetur autem &
operculo vaſis, &
ipſi diaphragmati. Deinde alius tubus K L M ſimiliter
impellatur per operculum, à diaphragmate parum diſtans, coarctatuſque
operculo, &
ex ſeipſo in labellum fluxionem deferens. Quod quidem
labellum imponitur tubo G H ſimul cum eo perforatum.
His ita conſti-
tutis vas A D impleatur humore per foramen N, quod poſt infuſionem
obturetur.
Si igitur in labellum humorem in fundamus deſcendet per

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