Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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116110JO. BAPT. ALEOTTI affixam fuſo, ſit cava, & hujus foramina intrent in centrum fuſi, qui, ut dixi,
perforatus ſit.
Reliquum eſt, ut dicamus, neceſſe eſſe poſtea ſub pedibus
fabri E adaptari cannam 13.
& 14. quæ ita adaptanda eſt, ut circa ſtilum
volvatur, prout dixiin præterito Theoremate in V T.
quæ eadem cum hac
eſt, &
conformis iſti quam deſcripſit Hero Theorem. XV. & hæc canna
ſit ſolida ab extremitate ſuperiore, quam figemus in truncum K, poſt-
quam in ea fecerimus foramen;
quod claudat & aperiat canalem H I, ejus-
91[Figure 91] que apici applumbatus ſit faber E.
Poſtea inferius duabus trochleis 17. 18.
imponatur funis, quæ ſit dictæ cannæ circumvoluta, & ad alteram ejus ex-
tremitatem, nimirum illam, quæ dependebit de trochlea 18.
alligetur

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