Full text: Alexandrinus, Heron: Heronis Alexandrini Spiritalium liber

JO. BAPT. ALEOTTI lud inſeratur regula Y, quæ quantum per artem fieri licet, ita accuratiſ-
ſimè ſit torno tornata, ut non poſſit alia melius adaptari, ne flatus poſſit
exire, uti Theoremate IX Heronis dictum, ubi tractatur de ſphæra
concava, & in XXVII ubi agitur de tubis quorum uſus eſt incendiis, & ſit regula de tubo uſque Y per medium perforata, & infixus Y ſit, Tri-
ton, per cujus corpus tranſeat tubus vacuus foramini regulæ applumba-
tus, & ille pertingat uſque ad os iſtius Tritonis, & intret in cochleam,
in qua adaptata ſit lingula, qualem tibiæ utriculari adaptare ſolent ruſtici,
poſtea in Y mediante fune appendatur vas 7 intra quod ſit tubus ſpiritalis,
poſtea imponatur funis duabus trochleis 2. 4. ita ut circumvolvatur cir-
cum baculum VT. ſtantem in æquilibrio in 16. & ad extremitatem fu-
nis trochleæ 2. appendatur pondus 6. ad alteram extremitatem ejus, vide-

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