DOI Page / Citation link:
https://doi.org/10.11588/diglit.18826#0181
LECT. IV.] ON PERSPECTIVE, 129
the other, it will equally imply a feparation, and
diftance, between them.
When a fliadow is of confiderable extent, the
objects which are immerfed in it, are not enlight-
ened from the fame quarter as the object calling the
fliadow, but by reflections from the oppofite quarter;
fo that, the lights and fhadows are fituated rc-
verfely. A perfon Handing under the fliadow of a
high wall, which fliadow falls to the left, will re-
ceive a reflected light from the left, and he will caft
to the right a fliadow on the wall, againft which he
ftands : always fuppofing no impediment to be in-
terpofed, but the air to be free.
Reflections are very much confufed, and inter-
mingled, by partaking of luminous rays emitted from
other bodies; and, efpecially, if the reflecting object:
be near the fliadow, it very ftrongly enlightens it :
as that Lady's white drefs reflects fo clearly on the
fliadowed flap of the table, as to whiten the fliadow.
Thefe particulars, and many others which are
allied to them, are by no means proper fubjects of
perfpective regulation; they muft: be fludied from
Nature; as muft alfo the reflections of colours; for
every colour emits rays according to its tint, and
thefe rays colour (or rather, perhaps, difcolour)
other objects on which they fall. Thus, when a
group of ladies fland together, the white drefs of
one will receive a tinge from the coloured drefles of
the others: from a pink, it will become pinkifli;
from a green, greenifli, and fo on: while, like a fo-
clable neighbour, it returns the compliment, and
renders
the other, it will equally imply a feparation, and
diftance, between them.
When a fliadow is of confiderable extent, the
objects which are immerfed in it, are not enlight-
ened from the fame quarter as the object calling the
fliadow, but by reflections from the oppofite quarter;
fo that, the lights and fhadows are fituated rc-
verfely. A perfon Handing under the fliadow of a
high wall, which fliadow falls to the left, will re-
ceive a reflected light from the left, and he will caft
to the right a fliadow on the wall, againft which he
ftands : always fuppofing no impediment to be in-
terpofed, but the air to be free.
Reflections are very much confufed, and inter-
mingled, by partaking of luminous rays emitted from
other bodies; and, efpecially, if the reflecting object:
be near the fliadow, it very ftrongly enlightens it :
as that Lady's white drefs reflects fo clearly on the
fliadowed flap of the table, as to whiten the fliadow.
Thefe particulars, and many others which are
allied to them, are by no means proper fubjects of
perfpective regulation; they muft: be fludied from
Nature; as muft alfo the reflections of colours; for
every colour emits rays according to its tint, and
thefe rays colour (or rather, perhaps, difcolour)
other objects on which they fall. Thus, when a
group of ladies fland together, the white drefs of
one will receive a tinge from the coloured drefles of
the others: from a pink, it will become pinkifli;
from a green, greenifli, and fo on: while, like a fo-
clable neighbour, it returns the compliment, and
renders