Vitruvius - L. Victrvvii Pollionis ad Cesarem Avgvstvm De architectvra

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# St aút ettā coclee ratio que magnam uim haurit aquæ ſed
# e # nó tā alte tollit ꝗ̃ rota. eius aút ratio ſic expedit́ tignú ſu
# mit́ cuius tigni q̃nta róne pedum longitudo tanta digi
torum expeditur craſſitudo. id ad circinum rotundat́ in capitibuſ
circino diuidentur circinationes eorum tetrantibus & octantibus
in pedes octo. hæ linee ita collocétur ut plano poſito tigno utri
uſ capitis ad libellam linee inter ſe reſpondeant & quāmagna ps
ſit octaue circinationis tigni tam magna ſpatia decidantur in lon
gitudinem. item in tigno plano collocato linee ab capite ad alterú
caput perducantur ad libellam co uuenientes ſic & in rotundatióe
& in longitudine æqualia ſpatia fient. ita quo loci deſcribuntur
linee que ſunt in longitudine ſpectante; ſa ient decuſſationeſ & in
decuſſationibus finita puncta. his ita emendate deſcriptiſ ſum: tur
ſaligna tenuis ut de uitice ſecta regula que iuncti liquida pice ſi
gitur in primo decuſſis puncto deinde traiicitur oblique ad inſe
quentes longitudines & circuitiones. item ex ordine progrediéres
ſingula puncta pretereundo & circum inuoluendo collocatur in
ſingulius decuſſationibus & ita peruenit & ſigitur ad eam lineam
recedeus a primo in octiuum punctum in qua prima pars eſt ei
us ſixa co modo quantum progreditur obligue ſparium & per oc
to puncta tantundem & longitudinem procedit ad octauum pun
ctum eadem ratione per omne ſpatium longitudinis & rotundi a
tis ſingulis decuſſationibus oblique fixe regule per octo craſſitu
dinis diuiſiones inuolutos faciunt canales & iuſtam coclee na'u a
lem imitationem. ita per id ueſtigium alie ſuper alias figunt́ un
cte pice liquida & exaggerantur ad id ut longitudinis octaua p@
fiat ſumma craſſitudo. ſupra eas circundantur & ſiguntur tabu: æ
que protegant eam inuolutionem. Tunc hæ tabulæ pice ſaturan
tur & laminis ferreis colligantur ut ab aque ui ne diſſoluantur ca
pita tigni ferrei. dextra aút ac ſiniſtra cocleā tigna collocant́ i cipi
tibus utra pte habétia trāſuerſaria cófixa. i his foramia feriea fút
incluſa in ea inducuntur ſtili & ita cocleæ hominibus calcanti
bus faciunt uerſationes. Erectio autem eius ad inclinationé ſic

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Scan	Original
91	84
92	85
93	86
94	87
95	88
96	89
97	90
98	91
99	92
100	93
101	94
102	95
103	96
104	97
105	98
106	99
107	100
108	101
109	102
110	103
111	104
112	105
113	106
114	107
115	108
116	109
117	110
118	111
119	112
120	113

Scan	Original
91	84
92	85
93	86
94	87
95	88
96	89
97	90
98	91
99	92
100	93
101	94
102	95
103	96
104	97
105	98
106	99
107	100
108	101
109	102
110	103
111	104
112	105
113	106
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118	111
119	112
120	113