Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

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8377SPIRITAL. LIBER.

LXI.

Lucernæ conſtructio, ut ſi oleum diminutum ſit, in ac-
cenſione lucernæ aqua infuſa, lucerna oleo repleatur.

Sit ſub lucerna vas undi-

68[Figure 68] que præcluſum A B, ſive
ipſi conjunctum, ſive ſeor-
ſum poſitum, ex quo pro-
cedant duo tubi C D, E F
ſimul cum vaſe perforati.
Et oſculum tubi C à fundo
ejus tantum diſtet, quan-
tum ad aquæ fluxum ſa-
tis ſit. Tubus autem C D
uſque ad ſuperficiem lu-
cernæ extendatur, phia-
lulam habens ad ejus ex-
tremum D, per quam aquæ
infufio erit: & Tubus E F
ſimul perforetur cum lu-
cernæ fundo. Si igitur ali-
quis per umbilicum lucer-
næ oleum infundat, pri-
mum in vas A B procedet.
Deinde eo repleto, reple-
buntur & tubi C D, E F,
& lucerna ipſa. Itaque ar-
dens lucerna exinanietur:
& cum per phialulam, quæ eſt ad D aquam infundamus, deferetur in vas
A B, oleo mixta, oleum autem quod eſt in vaſe A B aſcendens replebit
partem lychni exinanitam quouſque oleum ad nares perveniat. Poſtea
rurſus ſi ſubſideat oleum, idem faciendum eſt quoad oleum abſumatur.
Quod ſi oporteat oleo adhuc in lucerna comprehenſo, auferre vas A B,
erit ſmeriſma quoddam in tubis C D, E F ad @A B vas, & ad lucernam
claviculæ, ita ut ipſis converſis contineatur oleum, & quod in lucerna
eſt, & quod in tubis, & ita vas exemptile erit. Et quando volumus rur-
ſus iiſdem appoſitis claviculas aperiemus. Melius autem eſt tubum quidem
E F in aurem lucernæ ferri, tubum vero C D paululum poſt aurem,

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