Full text: Alexandrinus, Heron: Heronis Alexandrini Spiritalium liber

THEOREMATA SPIRITALIA. runt, rapidiorem motum faciat, & vim moventem multo minorem. Po-
ſito itaque tympano vel rotula dentata intra fuſum E, ita ut dentes per-
tingant inter gradus rhombi L, infixi ferro plicato, quod eſt centrum,
ubi ſunt appenſæ ſemihaſtæ, quæ alligatæ ſunt axibus cylindrorum coria-
ceorum, qui per modiolos adaptatos cum ſuis aſſariis, ut ſupra dixi,
cauſabunt fluxum aquæ velociſſimum in quamvis altitudinem.

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IDem motus ejuſdem velocitatis obtinebitur, ſi in fuſo (cuiinfixa ſit
rota dentata, quæ dentibus ſuis pertingit intra gradus rhombi L, qui
circumvolvit centrum, de quo dependent ſemihaſt æ cylindrorum, qui
per modiolos elevantur & deprimuntur) fuerit in flxa longa pertica, ita
ut juncto equo poſſit commode duci circum fuſum ſuper ſolo ligno infi-
xum, ut in O, & ſuperius circumvolvi per aliud foramen ad O perpen-
diculare, notatum P, curandum autem, ut ſub iſto ligno fuſus exacte
circumvolvatur, ne in circumvolutione dentesrotæ ſupra rhombum ele-

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