L I B E R N O N U S .
*9 9
Ingrcffo objicias; mage, quam p a r , ampla capilli 1710
Umbra jac i, verum non tam condenfa, vide tu r*
Quandoquidem partim radius deducitur extra
D iv itiis , finat ut latam mage pandier umbram ,
Partim intro rap tatu r, uti quodam imbuat illam
Lumine pertenui,'tenebras & diluat atras-
1715.
E latere admoveas radio fi forte nitenti
Ferri aciem , videas nitidum fe infledtere tradum s
Dein ipfo in radio fi ponas < terminus umbra
Qua fuerat, fefe oftendet non una colorum
F im b ria , qux nequeat d ifee rn i, fi prope ferrum
1720
Umbra cadat tabulam fu p e r; at fi abdudta tabella e ft,
Sxpc triplex confpedta, & adhuc numerofior i l l a .
Hanc etiam cifcuiii fpecics umbrofa capilli
Multiplicem pariter parti ntonftrabit utraque .
Horum clara tibi ra tio , manifeftaque pandit
1725
Immutare viam radios
7
cum corpora propter
Currun t, plus illos , minus illo s , ut radiorum
Natura ell va ria , & varia eft tectura co lorum .
Ergo cum radius cultro > objedlove capillo
Integer occurrit, multip lex fimbria circum
173©
Umbram e x it, tra&uquc nitens variante colorum 4 ,
Fimbria * prima , umbrxquc propinquior, interiori
V ifa fuit limbo v io lx velamine ting i,
C x -
ad aliquam d ift a n t ia m , in t o r q u e n s
t u r , q u o ru m i i , q u i in t o r q u e n
tu r in t r o r f u m , fu b e u n t u m o r a m
ip fam
U
ca m d ilu tio rem r e d d u n t .
Si radio ipfi a d m o v e a tu r a la
tere acies c u l t r i , in ft e & L u r v e r
fu s eandem aciem : q u o d fi acies
ip fa co llo cetu r in co lu m in e 5 w
pfius u m b ra a p p a re t fim b ria ta p lu
ribus coloratis fim briis , q u x fim
brias folent efle t r e s , v e r u m a l i
q u a n d o h a b e n tu r
te ^
p lures : / ;ju s -
m o d i fimbriae c o n fp ic iu n t u r e tia m
c irca u m b ra m ca p illi, quae q u id e m
n o n a p p a r e n t, si c h a r ta e x c ip ie n s
u m b ra m c o llo c e tu r p r o p e ip f u m
cu ltrum , v el c a p illu m . .
P h x n o m c n i c a u fa m in p r o m p t u
effe affirm at N o f t e r , n im ir u m
v im illam ca p illi
4 te
c u lt r i in
facho s p e rtin e n te m a d a liq u a m d i
fta n tia m ,
te
d iv e rfa m p r o d iv e r -
f a d iv e r fo r u m c o lo r u m n a tu r a ,
u n d e f i c , u t c o lo r e s ipfi a fp
in v ic e m f e p a r a t i,
te
d elati ad d i
v e rfa s parces ipfius chartre f p e f t a -
c u lu m e x h ib e a n t c o lo r a ta r u m fim
b r ia r u m .
t
H ic e x h ib e n t u r , qure d e c o l o *
r a tis fim b riis N e w t o n u s fic e x -
p reflic in O b fc r y a tio n c a
P r i-
, , m a five in terior fim b r ia c o lo r
„ re e ra t v io la c e o , a c 'c re ru le o
„ fa tu r o p ro iirflc u m b r a m i" d c -
„ in ce p s creiuleo c la ro , v i r i d i ,
, , a c fla v o io m e d ia fu i p a r c e »
„
te
rfubro e i t r a . S e c u n d a jfim -
, , b r ia f c r m e c o n tig u a era t prim a?,
, ,
te
tertia fccilndre : am bre a u -
t ; r a crerulcre e ra n t i n t r a ,
te
