277
L I B E R N O N U S .
A fcfc radios, (I frons percufla repe llit,
Uc certo a fpcculis fpecics lalit ordine rerum.
Vitrea rum facies frictu , attrituque politur
Pulvereo; non ell idcirco ut funditus omni_
X I? 5
Afperitatc vacet, neque fit via multa per illam
Planitiem d illenta, fibi ftruxere cavantes
Pulverea: quam p a rticu lx , fubterque terentes :
Nam cavat abradens pulvis, licet usgue m inutus,
Atque aliqua ulque lui linquit vcltigia ductus,
j i o »
Senius hxc quamvis lateant loca plena viarum .
Ergo fi fpcculi reflc£litur wquore lumen
Partium ab otfenfu, quia prorlias in sequore fcabro
Partes fu n t, alia nequeat ratione rem itti,
Quam qux confufa e ft, & in omnes fpargier oras , 1305
IJaud a lite r, quam cum quavis dc fronte re lu lta t.
Quanam igitur fpeculum radios ratione repulfet •,
Quo venere, ftatim referantur ut ordine certo ?
Scilicet eft qucedam vis corporis undique totam
Per faciem dillenta xque , fublatnque paulum,
l a i o
Quam pofiint radii venientes ante fubirc,
Impulfumque pati retro , quam corporis ipfam
Contingant faciem , & redeant a partibus i d i s .
Sed, genus hoc , tibi vim paulo poft pluribus e d am .
Et
ad m ed ium x c flc & c n s u ltr a c a m
p o fic is , n im ir u m ad fu m ir u m v i
liu m , quas e x e r c e n t in p a rtic u
lam lum inis in to to ejus m o tu ab
illa n o v a fu p e rficic t a n t u m m o d o
m e n te c o n c e p ta ad u lte rio re m su
p erficiem c o rp o ris ipfius r e f i c i e n
tis om n e s p a r t ic u lx tam fu p cr
ficici h ujus p o fte rio ris , q u a m in
fra cam p o fir x in c a d ifta n tia ,
in qua a g u n t c o r p o r a in lu m e n .
U b i afpcritas e x i g u a r e f p c & u to
tius m a flx a g e n t is in d u c it per
q u a m e x ig u u m d ife rim e n in fu m
m a viriutn ab c a , q u x h a b e r e t u r ,
fi fuperfieies cftct a c c u r a n ilim c
p e rp o lita , n u lla irr e g u la rita s inde
o t t a haberi p o te r it in re fle x io n e .
C o n c l u J i c , o m n i n o d ic e n d a m
effe , re flex io n em fieri n o n per
i m p j f t a m , fe d p e r vires a g e n
tes in a liq u a d iftan tia : q u o d (t
p a r t ic u lx q u x p i a m # l u m i n i s i n v
m e d ia te in c u rra n t in p a r t i c u l a s
fo lid a s c o r p o r u m , i l l x i r r c g u l a -
r it e r re fle c te n tu r , p r o u t fe r e t p o -
fitio fu o c rfic ic i , in q u a m i n c i
d e n t : led fi id a c c id a t,
a c c id c c
p e r q u a m p aucis p a r tic u lis : n a m
h a b e m u s c o rp o ra p lu r a
a d m o
d u m c o m p a d t a , & t a m e n f a t i s
p e llu cid a ira , u t p e r q u a m e x i
g u a pars lu m in is d i f o e r d a t u r „
Fere to ta v e l t r a n f m i f l a , v e l r e
fle x a • Id q u id e m e x ig it i n c r e d i b i
le m p a u c ita te m m ateriae r c f p c & u
fp atii,fivc im m e n fa m q u a n d a m r a
rita tem c o r p o r u m e tia m a d m o d u m
c o m p a d t o r u m , q u x q u o p a & o
co n c ip i p offit , N o f t e r
e x p o n i t
in i i s ; q u x c o n l e q u u n t u r »
