DOI Seite / Zitierlink:
https://doi.org/10.11588/diglit.19574#0237
yiates from itfelf, always juft and perfect ; the camel, prudence,
never carrying a burthen above its ftrength.
DISPERSION, as point ofDifperfion in dioptrics, is a point
from which refracted rays begin to diverge, when their refrac-
tion renders them divergent.—It is called the point of Difperfion
in oppofition to the point of concourfe, which is the point
wherein converging rays concur after refraclion.
DISSIMULATION, is reprefented, in painting, &c. as a
lady wearing a vizard of two faces, in a long robe of a change-
able colour, and in her right-hand a magpie.
Line <?/"DISTANCE, in perfpe&ive, is a right-line drawn
from the eye to the principal point.
Point of Distance, in perfpeclive, is a point in the hori-
zontal line at fuch a Diftance from the principal point, as is that
of the eye from the fame.
DISTEMPER, in painting, is a term ufed for the working up
of colours with fomething elfe befides water or oil; as fize, whites
of eggs, or any fuch proper glutinous or un£tuous fubftance.
Pieces painted with fuch colours are faid to be done in Diftem-
per, as the admirable cartoons at Hampton-Court are.
All colours are proper in this fort of work, except the white
of lime, which is never ufed but in frefco.
Azure and ultramarine muft be ufed with a pafte made of
glove-fkin or parchment, for the yolks of eggs will make the
blue colours turn green ; which they do not with pafte or gum,
(either on walls or boards.
If the work is on walls, care muft be taken that they be dry :
The painter muft even lay on two layers of pafte quite hot, be-
fore he applies the colours, which, if he pleafes, he may alfo
temper with pafte, or compofition of yolks of eggs and fig-tree
branches, But it is certain, that the colours with pafte keep
better.
And thus have all the defigns or cartoons for tapeftry been
painted on paper. This pafte, as has been faid, is made of
glove-fkin or parchment.
When a painter would work upon cloth, he muft chufe that
which is old, half ufed, and very fmooth ; then prefs pounded
plaifter with glove-fkin pafte over it.
All the colours are ground with water, each by itfelf; and, as
the ,painter wants them for his work, he tempers them with
pafte-water.
If he would varnifti the picture when it is finimed, he need
only rub it with the white of an egg well beaten, and then put
one layer of varnifh over it; for the greateft difadvantage of
Diftemper is, that it has no glittering, and all its colours look
dead j by which means they appear alike in all forts of lights,
which
never carrying a burthen above its ftrength.
DISPERSION, as point ofDifperfion in dioptrics, is a point
from which refracted rays begin to diverge, when their refrac-
tion renders them divergent.—It is called the point of Difperfion
in oppofition to the point of concourfe, which is the point
wherein converging rays concur after refraclion.
DISSIMULATION, is reprefented, in painting, &c. as a
lady wearing a vizard of two faces, in a long robe of a change-
able colour, and in her right-hand a magpie.
Line <?/"DISTANCE, in perfpe&ive, is a right-line drawn
from the eye to the principal point.
Point of Distance, in perfpeclive, is a point in the hori-
zontal line at fuch a Diftance from the principal point, as is that
of the eye from the fame.
DISTEMPER, in painting, is a term ufed for the working up
of colours with fomething elfe befides water or oil; as fize, whites
of eggs, or any fuch proper glutinous or un£tuous fubftance.
Pieces painted with fuch colours are faid to be done in Diftem-
per, as the admirable cartoons at Hampton-Court are.
All colours are proper in this fort of work, except the white
of lime, which is never ufed but in frefco.
Azure and ultramarine muft be ufed with a pafte made of
glove-fkin or parchment, for the yolks of eggs will make the
blue colours turn green ; which they do not with pafte or gum,
(either on walls or boards.
If the work is on walls, care muft be taken that they be dry :
The painter muft even lay on two layers of pafte quite hot, be-
fore he applies the colours, which, if he pleafes, he may alfo
temper with pafte, or compofition of yolks of eggs and fig-tree
branches, But it is certain, that the colours with pafte keep
better.
And thus have all the defigns or cartoons for tapeftry been
painted on paper. This pafte, as has been faid, is made of
glove-fkin or parchment.
When a painter would work upon cloth, he muft chufe that
which is old, half ufed, and very fmooth ; then prefs pounded
plaifter with glove-fkin pafte over it.
All the colours are ground with water, each by itfelf; and, as
the ,painter wants them for his work, he tempers them with
pafte-water.
If he would varnifti the picture when it is finimed, he need
only rub it with the white of an egg well beaten, and then put
one layer of varnifh over it; for the greateft difadvantage of
Diftemper is, that it has no glittering, and all its colours look
dead j by which means they appear alike in all forts of lights,
which