Dire&re radii pa rti, quam denique vertis^
Excipiat pulla , atque obtundat luminis idtus :
Caudarum tradtus remanent tum denique c la ri. 1
7
P
5
Omnia confimiles conflant, difeurritur xque
ln longum latumque, atque xquo lumine gaudent.
Pollent lioc nimium , fpc&ant qua parte foramen
V ic in um , & lucem diredtam tranfgredientem,
Dillentique vigent vix pollicis intervallo
1800
D im id ii : minui porro vis fulgida , demum
Evanefccre , ubi fpatii pars quinta peradta eft
Illius , quo cultri acies di (labi t acuti .
Ullanc jam queat hac ratio manifeftior cfle,
Diffra&os radios qua nofcas fledier illam
1805
In partem tantfim, quantum illam , fcilicet xquis
Corporis imperiis adducier, atque re p e lli.
Nunc 1 geminas cultrorum acies adducere fcnfim
Incipias ad fe , radius dum tranfmeat illa e ,
Pollicis incipient vix tum diltare viciflim
1810
Par-
L I B E R N O N U S .
joj
„ r a t , fuper ch arta a lb a d eincep s
, , intervallo d u o ru m t r i u m v e p e -
,, dum ultra c u ltru m c o l l o c a r a ,
,, ibique vidi d u a s lu m in is la n -
,, guid ioris ra d ia tio n e s u t r o q u e
,, verfus e lu m in is ra d io illo i a
,> um b ram ta n q u a m ca u d as C o -
,, m etarum fe e m itte n te s . V e r u m
,, q u o n ia m d ir e flu m fo lis lu m e n
,, nim ia fua claritate fu p e r c h a r -
,, 'am o b fcu ra b ar la n g u id io r e s h a -
,, fce radiationes a d e o , uc regre
,, cas d ifccrn crc p o tu e rim j p e r-
,, tudi ad h u c
te
h a n c c h a r t a m ,
,, ut folis lu m e n
te
illic per p a r -
,, vum fo r a m e n tra n fm iffu m in -
,, ciderct d e m u m in p a n n u m n i-
,, gru m ulteriu s c o llo c a tu m , ja m -
j , que b in as i l l a s , rad iation es fu -
,, per ch arta m a n ife flo a d m o d u m
,, lum co n fp icatu s . E ra n t hae c o n .
, , Timilcs p la n e in te r fe ,
te
p ro -
,, p e m o d u m pares e tia m l o n g i-
,, tudine , ac la titu d in e , & q a ' n -
„ tita c c lu m in is . L u m e n ip fa r u m
„ qua p arte id di r e f l o folis lu -
„ m in i a d j a c e b a t , fatis e ra t f o r -
„ te circite r ad £ , v e l ~ Uti-
, , c ire , in d eq u e p ro e o , a c a d i-
,, r e f l o illo lu m in e r e c e d e b a t , m i -
„ n u e b a tu r g r a d a t im , u fq u e d u m
, , p e n itu s ad fe n fu m e v a n e f c e r e t .
,,
T o t a lo n g itu d o u triu fv is h a -
„ r u m ra d ia tio n u m d im e n fa fu p e r
M c h a r ta m in te rv a llo triu m p e -
, , d u m a c u ltro era t c irc ite r f e x ,
, , v e l o f l o u n c ia ru m „ .
H rec N e \ ^ to n u s ,c x q u ib u s N o f t e r
ju r e fa n e a f f i r m a t , m a n ife ft o e r u i
a f l i o n e m c o rp o ru m in lu m e n , qure
ip fu m ja m a t t r a h a n t , ja m re p e l
la n t : a tt r a flio n e d e b u it d e to r q u e r i
id , q u o d a b iit v e r fu s u m b r a m
c u ltri , re p u lfio n c , q u o d in p a r
te m o p p o fita m r c c e u l t .
1 H i c ja m p r o g r e d itu r N o f t e r
a d o b fe rv a tio n e s f a fla s o p e d u
plicis cu ltri ,
q u a s
N e w t o n u s
h a b e t in o b fe r v a tio n e 7 , u b i f i c .
„ C o llo c a v i a liu m c u lt r u m p r o p e
J( p rio rem i t a , u t acies c u ltr o -
v
rum p a r s llc fe e ffe n t in te r f e ,
„
te
in v ic e m o b verfre , r a d iu fq u c
f, luminis incideret in ambos fi-
