# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0198
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0198?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 26, page id 1677894601:0198
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=198
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000198.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 30 lines, status machine
# Lines: 30 recognised, mean confidence 0.93
# Machine transcription. Not an edition. Errors are expected: about 8% character error rate on Latin and French lines, higher on German.
# Licence: CC BY 4.0, Leibniz Legible. Machine output: do not ingest it as verified text; keep this provenance with the text.
# Wording rule: say "the machine reads it as …", never "Leibniz wrote".
# After the first blank line: the recognised lines in reading order, one per line.

26
poured on the sround, where they may cool in the
open Air, hare, like the Colours oF Water-bubbICS,
been a litele charged by viewins them at divers ob-
liguities, and particularly that a deep blue, or violet,
irtren riered very obliquelr, hath been changed to a
decp red. But the chanses ot these C OIOUES are nOt (O
sreat and sensible as of thole made by Water. For the
Scoria or vitrihed part ot the Metal, Wrhich mort Me-
tals wrhien heated or melted do continuallu protiude,
and send ont to their Curtace, and irtrich by coverine
the Metals in torm ot a thin slastr skin, caules thele
Colours, is much denter than Water; and I And that
the chanse made by the obliquation of the Fycis lcast
in Colours ot the densest thin substances.
OBS. XX.
A5 in the ninth Obserration, Pohere, the Bubble, Dy
cransmitted Light, appeared ot a contrarr C olour to
that irhich it exhibited by rellexion. Thus Wrhen the
Bubble being looked on by the L ight ot the Clouds re-
Aected From it. seemed red at its apparent circumte-
rence, it the Clouds at the lame time, or immediatel
alter, vere viered through it, the Colour at its cir-
cumference mould De blue. And, on the contrary.
ertren by resected Lioht it appeared blue, it vouid ap-
Dear red by transmitred Lignt.
OBS. Z XI.
By wetting very thin plates oF Muscory-sta(S, Whote
Thinnels made ehe like COlOurs appear, the COlOUTS
DecaMC