Heron <Alexandrinus>, Heronis Alexandrini spiritalium liber

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120114JO. BAPT. ALEOTTI
Modus, quo facimus ut canalis aquæ vel fluentis, vel ſtagnan-
tis, in verticem cujuſcunque altiſſimæ turris aquam pro-
jiciat :
jam frequens in multis locis, dummodo aqua à ſu-
perficie ſua aliquantum delabatur.
94[Figure 94]
QUoniam naturales fontes in locis inferioribus, à natura ſitus non ſunt
conceſſi, propterea artis eſt tales conſtruere, tam in veſtris regioni-
bus, quam in omnibus aliis locis ſimilibus;
ne curioſi abſterreantur difficul-
tate fluxus aquæ, à praxi eorum, quæ ab Herone excellentiſſimo Mathe-
matico, &
in quatuor modis à me demonſtratis, ſunt deſcripta, volui ad-
jungere ad iſtum (meo judicio) pulcherrimum librum, hunc modum ele-
vandi canalem aquæ vivæ in quamcunque altitudinem, ut quod in plano
natura negavit, artificio facillimo obtineatur, ut &
ſumptibus parvis pro
illo, qui habet vicinos amnes vel foſſas, vel quaſcunque alias aquas fluentes.
Modus ipſe ferme ſine deſcriptione ex figura addiſci poteſt: non

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