# Leibniz Legible — https://leibnizlegible.com
# Page: https://leibnizlegible.com/page/1677894601:0087
# Permalink to this reading: https://leibnizlegible.com/page/1677894601:0087?run=74
# Title: Opticks: Or, A Treatise Of The Reflexions, Refractions, Inflexions and Colours Of Light (shelfmark Leibn. Marg. 193)
# Folio 77, page id 1677894601:0087
# Original at the GWLB: https://digitale-sammlungen.gwlb.de/resolve?id=1677894601&page=87
# Source image: https://digitale-sammlungen.gwlb.de/content/1677894601/jpgs/default/00000087.jpg
# Model: FoNDUE-GD_v2_ft_Leibniz, run 74, 2026-09-06T16:05:13Z — 34 lines, status machine
# Lines: 34 recognised, mean confidence 0.91
# 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.

Notion, for about ero or chree Minures ot rime, leanine
hard uxon II. Then I puc Frech Pucer uxon che Pich and
oround ic 2gain eill ic had done makcing a noise, and atter-
wards ground che Object Metal upon ic as betore. And
ehis Work I repeaced eill che Mecal vas polistred, grindine
it che last eime ich alI my Srengch For 2000d while coge-
cher, and trequener breaching upon che Picch to keep ic
moist rithour lazins on aur more Frestr Puter. The Ob-
sect. Metal iras evo Inches broad and aboue one third pare
oF an Tuch chick, eo kecp ic trom bending. I had ewo ot
chese Metals, and wten l had polithed chem boch I cried
irtich ras best, and oround che ocher axain to sec if P conla
makce ic beccer chan chac irtich IKepE. And chus by mans
Frials I learne che way of polistrins, till I made thole tvo
refectins Pespectires I spake oF abore. For this ArE ot
polictiins will be becter learne by repeated Practice chan by
my descripcion. Betore I ground che OBject Mecal on the
Picch, I alivars oround che Puter on ic rich che concave
Copper eill ic had done matins a noise, because it che Par-
ticles oF che Puter vere noc by this means made co sick
Fast in che Pitch, cher vould by rollins ux and donngrate
and tret the Object Necal and AII ic FuIl ot licele holes.
But because Necal is more difficule ro polith than Class
and is aftermards very ape to be spoiled by carnilhins, and
reflects nor (o much Lighe as Clals quick-silvered over does:
Twould proxound conse insteadot theMecal, a Cilals ground
concare on the Forelide, and as much conrex on the back-
Side, and quick- Silrered orer on the convex Side. The Clals
must be every irhere of che lame chicknels exactlr. Ocher-
rile ic ill make Objects look coloured and indistinct. By
Tuch a Cla(s P eried aboue five Or (IX Tears 290 to male
a refectins Pelescope offour Fect in lensch eo magnity a-
bour 150cimes, and IPatistied my selF chae chere WAnES nO-
chino