L I B E R O C T A V U S .
1
61
Tinge etiam coni faciem ; guttafque pu ta to
Om nes , qux jadlant rubeum , cducuntaue co lo rem ,
Apparere fuper facie illa, & proinde videri
iEquali a medio coni axe recedere tradiu .
925
Proin & d ifpo iltx comparent orbis in a rc um ,
O rb is , quem medium n im irum tra jic it i l l a ,
Q u x fol em atque oculum nedlit via c o n tin u a ta .
Sic alios etiam , quotquot f u n t , flcdlcre debes ,
Fleximus ut rubeos, fuper Iridis ore c o lo re s .
9 3 0
H x c v ia 1 , qux ncdlit folemque , oculumque , neceffe eft,
Cum fuper occafum , fuper aut Sol editus o rtum e ft,
Protinus u t fubcat te rram , feleque
1
'ub ejus
Vilceribus condat exc is ; proin illius orbis
Quod medium eft pundtum, terra quoque crede latere . $>35
Q uap rop te r, terra extantem quem confpicis , arcus
Partem dimidiam non totius expleat orbis .
D im id iam cxxquet partem , cum lum ina m itta t
Ex hum ili nimium Sol exorienfve , cadenfve ;
Nam via tum terram conradit defuper sequam, _
9 4 0
F t medium id pundtum fupera in te llu re r e c u m b it.
A t ii Sol oricnlve prope , occurnbenfve fit ip fo in
T om . I I I .
L
M a r-
i Jam vero patebit facile &
illud , quod in Iridis deferiptio-
nc Cupra eft notatum , ejus ar
cum oculo polito in campo pa
tenti plerumque debere apparere
minorem (emieirculo , nunquam
autem majorem . Si fol (it prope
hori/.ontcm paullo polt ortum ,
vel ante occafum , axis commu
nis ille conorum omnium trans
iens per folcm Sc oculum erit
horizontalis , adeoque centrum
circuli in horizonte , & ejus di
midium apparebit fupra horizon
tem , dimidium latebit infra i-
pfum .
Q u o d
fi
jam
fol fit fu p ra h o -
riz o tu c m , a x is a b ib it i n f r a ip (u m ,
a d eo q u e c e n t r o c ir c u li d e p re ilo
in fra n o n p o f e r ie e x t a r e i u p t a ,
n ili pars f c m i c i r c u l o m i n o r , &
c o m in o r e x t e r i s r a r i b u s , q u o
f o l fu e rit
m a g i s e l e v a t u s , q u ia
c o m agis e r it d e p r e ifu m in fr a c c g -
t r u m c u m a x e .
H x c u b i o c u l u s
fi tu s
fit in
i m m c n f a h o r i z o n t a l i p l a n i t i e . S ed
fi q u i fit in f u m m o m o n t e , p o
t e r i t p o t i f f i m u m p r o p e o r t u m , &
o c c a f u m (o lis , v i d e r e p a r t e m c ir
c u li e t i a m i n f r a i p f u m m o n t e m
in v a l l e j m a , a d e o q u e p lu f q u a in
f e m i c i r c u l u m . A v e s f u f p c n ( x in
a c r c p o f i u n t e t i a m i n t e g r u m v i
d e r e o r b e m , u t
dc
q u i c fuiTUna
a r b o r e v i d e a t c o n t r a fe fo n t e m
r o r a n t e m g u t t u l i s l a t e d ifp c rfis ,
f o l c a v e r f o p o l t t e r g u m , p o r c i i t
ib i in t u e r i c i r c u l u m I rid is i n t e
g r u m ( e m i e i r c u l o
j a c c n t c i n f r a
f p c & a t o r c m , u b i r a m i f r o n d e n
te s , a u t n i m i s
c r a f f u s t r u n c u s
n o n i n t e r c i p i a n t n c e c f l a r i o s fo lis
r a d i o s : t r u n c u s t e n u i s n o n p o
t e r it
o m n e s i n t e r c i p e r e , c u m ,
u t v i d i m u s in l i b r o p r x o c d e n t i ,
u m b r x c o r p o jr u m n o n e x t e n d a n
t u r a d fa tis m a g n a s d i f t a i u i a s .
