Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

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5650HERONIS

XXXV.

Conſtruitur etiam vas, quod quouſque infundas humo-
rem excipit, ſi vero deſiſtas, non amplius excipit. Fit autem
hoc modo.

Sit vas A B collum

41[Figure 41] habens diaphragmate
C D interſeptum, &
per diaphragma demit-
tatur tubus EF, à fundo
quidem parum diſtans,
excedens autem dia-
phragma ita ut à labro
vaſis non multum diſtet;
circa quem alius tubus
circumponatur G H à
diaphragmate, & à tubo
tantum diſtans, quan-
tum ad aquæ fluxum ſa-
tis ſit. Tubi vero G H
pars ſuperior ſquammu-
la obtegatur; & vas ha-
beat ſpiraculum K in
ventrem deferens. Quando igitur per collum humorem infundamus,
continget ipſum procederein ventrem vaſis per tubum GH, & per E F,
aëre per ſpiraculum K excedente. Quod ſi deſiſtamus, & collum vaſis
exinanitum fuerit, aër continuitatem abrumpet. Quare humor, qui eſt in
tubo G H delapſus cadet in diaphragma. Sit autem latitudo circa G H
talis, ut ſua gravitate humor decidat. At infuſo altero humore, aër in tu-
bo E F collectus, & in G H non permittet ipſum humorem ingredi. Sed
ſupra vaſis labrum ſuperfundetur.

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