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# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 64, page id 1677894601:0240
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L64
AanCes. For the Paper will ulually appear ot a bluisti
wrtrite; and the reason is, that black borders on the
obicure blue oF the Ars order described in the 18th
Oblerration, and theretore reflects more rays ot that
Colour than ot any other.
In chese Descriptions I hare been the more particu-
lar, because it is not impossible but that MilcrolcoDeS
mar at lenoth be improved to the discovery ot the
particles of Bodies on rrhich their Colours depend, it
cherare not alreadr in lome meature arrived to thatde-
oree ot pertection. For iEthose Instruments are OF Can
be (0 tar improred as ith sufficient distinctnels to re-
prelent Objects tire or six hundred times bigger than
at a Foot distance ther appear to oui naked Fves, I
Chould hope that re mistit be able to discorer lome ot
the greatest ot thole corpuseles. And by onc that rould
magnier threc or tour thouland times perhaps ther
mioht aI be discorered, but those irhich produce Black-
nels. In the mean wrhile I sec nothins material in this
Discourse that mar rationallr be doubted ot excepting
this POTtIOn. That tranparent corpuscles et the lame
thichness and densicy with a Plate, do extribit the lame
CoIOUr. And this I vould have understood not With-
out lome latitude, 25 vell because those corpuscles may
be of irresular Figures, and many rays must be oblique-
ly incident on them, and lohare a Mhorter ray throush
them than the length ot their Diameters, 25 becaule the
Araitnels ot the medium pent in on aIl sides writhin Tuch
corpulcles mar a lictle alter its motions or otner qua-
lities on irtich the rettexion depends. But vet Ican-
not much suspeet the last, becaule I have observed ot
Come InaII Plates oF Mulcory-Cila(s irhich irere oF an
erem