Ibn-al-Haitam, al-Hasan Ibn-al-Hasan; Witelo; Risner, Friedrich, Opticae thesavrvs Alhazeni Arabis libri septem, nunc primùm editi. Eivsdem liber De Crepvscvlis & Nubium ascensionibus. Item Vitellonis Thuvringopoloni Libri X. Omnes instaurati, figuris illustrati & aucti, adiectis etiam in Alhazenum commentarijs, a Federico Risnero, 1572

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[31] a b h c
[32] a d b k ſ c
[33] b ſ a u f d c h n g r k s x q p
[34] f d d e r b g c h i p ſ q s n k
[35] f a r d e b g c h p ſ s n k
[36] ſ g d f h b a
[37] a d f t e b
[38] d b c e f g b d
[39] a f b c d e
[40] a f b c d e g
[41] h t a d ſ s g k b e
[42] a b h e d z
[43] b a g q t d z e h
[44] a g b e d z t q h
[45] b g a t z d h
[46] a h b e g p d z n q
[47] h a b e g p d z n q
[48] a h b e g p f d z n q
[49] x e g k z a d
[50] g m h z p b d a k
[51] t g p b h i z d a k s
[52] g z f h a b d c q e k ſ r
[53] m t n q h b f e z p d a g
[54] b ſ d h f r g z q t e a
[55] a d q c m x b g p o k t f z h
[56] a d k u m r h b g i l f e o z t y
[57] a d u m b g o e q s z h p
[58] a d u m c g b o t q p n z h
[59] b k a p f m e l z g t r o q h n d
[60] b k u a p e g t q n d
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4FEDERICI RISNERI ticis expectauimus) cum P. Ramus diu multumq́; peruarias
bibliothecas
requiſitum, ueſtigijsq́;
omnibus indagatũ tan
dem
in auctione publica proſtitutu, & tanquam pro deſer-
to
habitum coemiſſet:
alterũ poſtea etiam exemplar nactus
eſſet
:
utrunq; mihi (quem aliquot antè annos mathematicę
exercitationis
conſortem & adiutorem habuiſſet) conferen
dum
tradidit:
poſteaq́; , cum è medio renaſcentium bellorũ
ardore
mathemata quædam ſibi chariora, & hunc Alhaze-
inprimis è bibliotheca ſua ſub duxiſſet, Baſileam me cum
his
tanquam penatibus ſecum abduxit, & annum integrum
in
authore iſto reſtituẽdo & conformando occupauit.
Dili-
gentiam
ſanè & doctrinam in arabe homine mirabilem de-
prehendi
, nec admodum, quod animaduertere potuerim, à
ueteribus
Græciæ opticis adiutã.
Euclideũ hic uel Ptolemai
cum
nihil ferè eſt.
Aliquid fortaſſe ſumpſerat ex Archimede,
Apollonio
& Auenello, à quibus optica quædam conſcri-
pta
eſſe monimẽtis literarũ teſtatum extat:
item à Damiano
& alijs opticis, quorũ libri in manus meas nondum incide-
runt
.
Veterum tamen opticorum lectionem Alhazenus ipſe
confitetur
lib.
6. cap. 4. de errore, qui accidit in ſpeculis ſphę
ricis
conuexis.
& lib. 7. cap. 6. quomodo uiſus cõprehendat
uiſibilia
ſecundum refractionẽ.
Quam obrem cum luculen
tum
quidem ſcriptorem & copioſum opticũ, ſed ualde con
fuſum
perſpexiſſem:
id mihi P. Ramo ſuaſore & authore con.
ſilium
ſumpſi:
quod eſt eiuſmodi. Primò quia totũ opus in
pauca
& prolixa capita continuo perpetuoq́;
ſermone diur
ſum
fuit:
ſingulos libros & capita in propoſitiones diſtinxi:
& quæ Vitellonis theoremata his reſponderent, annotaui:

ut
collatione theorematũ utriuſq;
optica materies rudi ac
nouitio
lectori difficilior atq;
obſcurior lucem aliquam &
perſpicuitatem
acciperet.
Deinde demonſtrationes omnes
emendaui
& reſtitui:
earum firm amenta acrobora (quæ ple
riſq
;
locis omnibus deerant) ex Euclide, Theodoſio, Apollo
nio
, Sereno, alijsq́;
geometris addidi: pręcipuè uerò quintũ
& ſextum libros, quibus catoptrica cõprehenduntur, & ſe-
ptimũ
, qui refractionem interpretatur, propter demonſtra-
tionum
obſcuritatem breuitatemq́;
cõmentariolis quibuſ-
dam
illuſtrare conatus ſum.
Deniq; figuras omnium propo
ſitionũ
de integro conformaui.
Atq; hic in rebus ſentẽtijsq́;

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