Heron <Alexandrinus> - Heronis Alexandrini spiritalium liber

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108102JO. BAPT. ALEOTTI

Repræſentare Herculem clava aggredientem Draconem
poma aurea cuſtodientem, ita ut Hercule clavam elevante
Draco ſibilet, dumque eam in ejus caput impingit, aquam
in faciem ejus ejaculetur.

Theorema I.

S It baſis A B C D, cujus una pars C D E F G H K ſit arctiffi-
me clauſa: ita ut aër inde exire nequeat. Supra hanc & ſubter
canalem S ponatur infundibulum T, cujus cauda ſub finem
coarctata, ut demonſtrat pars ejus notata V, in tantum diſtet
ſupra fundum baſis G H K, quantum ad fluxum aquæ videbitur ſufficere:
cujus fundo ſint applumbati duo inflexi ſiphones X & Y; ſed Y fit multo
ſubtilior ſiphone X, hinc in P ſtatuatur Hercules, in N poma aurea &
ſub eis in L Draco. Hoc facto in latere baſis E F G H adaptetur tubus
M, qui in O flectatur & pertingat in os Draconis ita comparatum, ut edat
ſibilum, dum aër (ab aqua canalis S, quæ per infundibulum in baſin intrat)
pulſus conabitur (cum alium exitum non inveniat) exire periſtum tubum:
& ſit quoque ita adaptatum, ut dum per ſiphonem Y evacuatur baſis,
neque poteſt aliunde, quam per oſculum dicti tubi admittere aërem,
etiam ex eo majorem ſibilum edat; quod nemini puto conſtructu difficile
eſſe. Poſtea à clavo O O ſuſtentetur regula D D C C ſub cujus una
extremitate C C adaptetur conus cavus R R qui interius contineat cir-
culos perfectos, lineasque rectiſſimas, accuratiſſimè torno elaboratus.
Intraque illum adaptetur conus ſolidus B B, qui illi exactè ab omni parte
inſiſtat: hic in parte ſuperiore habeat annulum, cui alligatus funis ſuſpen-
datur in C C, regula D D C C ſtante in perfecto diano. Et ſub D D
appendatur vas Z, quod cavum multo levius ſit cono B B: hic vero &
regula & conus ita ſint diſpoſiti, ut vas Z ſit ſub crure exteriore inflexi ſi-
phonis X, & ad anſam ejus alligetur funis, qui tranſeat per crus Hercu-
lis dextrum, perque corpus ejus attingat brachia, quæ clave quadam
figura literæ T in æquilibrio ſuſtententur: exemplar eſt T. 3. eſt humerus
dexter, 2. eſt humerus ſiniſter, & 4. eſt ſcytala, dum itaque 2. 3. ſtant
in æquilibrio, alligetur funis in 4 extremitate ſcytalæ. Poſtea manibus
Herculis inſeratur clava Q. Deinde ſupponatur cruri inflexi ſiphonis Y
vas A A, & hic tubus ſit operculo dicti vaſis optime applumbatus, &
operculum ipſum vaſi: ex quo egrediatur tubulus T T R qui caput ſuum
inſeratin cavum conum R R, iſque cum iſto ſit perforatus, & habeat

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Scan	Original
101	95
102	96
103	97
104	98
105	99
106
107
108	102
109	103
110	104
111	105
112	106
113	107
114	108
115	109
116	110
117	111
118	112
119	113
120	114
121	115
122	116
123	117
124	118
125	119
126	120
127
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Scan	Original
101	95
102	96
103	97
104	98
105	99
106
107
108	102
109	103
110	104
111	105
112	106
113	107
114	108
115	109
116	110
117	111
118	112
119	113
120	114
121	115
122	116
123	117
124	118
125	119
126	120
127
128
129
130

Scan	Original
101	95
102	96
103	97
104	98
105	99
106
107
108	102
109	103
110	104
111	105
112	106
113	107
114	108
115	109
116	110
117	111
118	112
119	113
120	114
121	115
122	116
123	117
124	118
125	119
126	120
127
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