DOI Page / Citation link:
https://doi.org/10.11588/diglit.19574#0461
HE! 42 j
with the hair In fuch a mariner as may be mcdl-agreeable to the
eye,
Of the Head in forejhortening. Make a circular draught,,
with the afpecc upwards or downwards, as in the foreright head,
where the traverfe lines are ftraight, but thefe go circular ; for,
if the heads fly upwards, the traced ftrokes and diviiions mud be
raifed with caution, that the ears and eyes fall not out of their
due points.
Meafures or HEIGHTS, and diminution of elevated figures.
As to the diminution of figures, when placed on high, we are
to take our meafures in proportion for fuch as are to be raifed in
paintings, when they be placed on mountains, houfes, or above
the clouds in the air. The two rules we have now to give, will
render the method extremely eafy.
For the firft, I fuppofe the man A, plate XXVH, fig. r, to
be fix feet; which Height I fet off feveral times on a perpendi-
cular B over the bafe line 6, 12, 18, &c. draw lines tothe head
of the figure A ; then, fetting one point of the compai's at letter
A, with the other defcribe the arch C D, and the interfeclion
that arch makes with the rays, are the meafures to be given the
figures.
Thus, if you would have a figure appear forty-two feet high
above the fame bafe line, take E D, which cuts the two laft
rays, and fet it off to F, fig. 2, which is forty-two feet above the
fame bafe A B.
If another be required thirty feet high, you muff take the dis-
tance G H, fig. 1, which cuts the rays 30., 36, and gives the
Height of the figure P, fig. 2, and fo of the reft.
The main point is the approaching or receding of the line B,
fig. 1, which muff always be the diftance between the fpec-
tator and the object, viz. thirty feet, or thereabouts.
For the fecond rule ; inftead of the line B, ufed in the fir ft
figure, the divifion is made from fix feet to fix on the bafe line
I T, fig. 3. The two firft points 1 and 6 are to be drawn to
the point of fight K, Thus between the two rays I K and 6
K you have the meafure of fix feet, which is the Height to he
given the figures. Then from all the other divifions 12, 18,
24, 30, &c. draw lines to the point of diftance L ; and in the
interjections made by the rav 6 K draw little parallels to the
bafe line between the rays I K and 6 KL. Thele parallels will
give the Heights of figures unequally high, but at the fame dif-
tance ; which may be proved by comparing the meafures of the
■firft method with thoie of the fecond. See fig. r, 2.
It it be afked how much each figure is diminifhed from the
nrft, which is fix feet high, you need only to take the Height
of the figure required in your comnafles, and fet it off on your
E e 4. little
with the hair In fuch a mariner as may be mcdl-agreeable to the
eye,
Of the Head in forejhortening. Make a circular draught,,
with the afpecc upwards or downwards, as in the foreright head,
where the traverfe lines are ftraight, but thefe go circular ; for,
if the heads fly upwards, the traced ftrokes and diviiions mud be
raifed with caution, that the ears and eyes fall not out of their
due points.
Meafures or HEIGHTS, and diminution of elevated figures.
As to the diminution of figures, when placed on high, we are
to take our meafures in proportion for fuch as are to be raifed in
paintings, when they be placed on mountains, houfes, or above
the clouds in the air. The two rules we have now to give, will
render the method extremely eafy.
For the firft, I fuppofe the man A, plate XXVH, fig. r, to
be fix feet; which Height I fet off feveral times on a perpendi-
cular B over the bafe line 6, 12, 18, &c. draw lines tothe head
of the figure A ; then, fetting one point of the compai's at letter
A, with the other defcribe the arch C D, and the interfeclion
that arch makes with the rays, are the meafures to be given the
figures.
Thus, if you would have a figure appear forty-two feet high
above the fame bafe line, take E D, which cuts the two laft
rays, and fet it off to F, fig. 2, which is forty-two feet above the
fame bafe A B.
If another be required thirty feet high, you muff take the dis-
tance G H, fig. 1, which cuts the rays 30., 36, and gives the
Height of the figure P, fig. 2, and fo of the reft.
The main point is the approaching or receding of the line B,
fig. 1, which muff always be the diftance between the fpec-
tator and the object, viz. thirty feet, or thereabouts.
For the fecond rule ; inftead of the line B, ufed in the fir ft
figure, the divifion is made from fix feet to fix on the bafe line
I T, fig. 3. The two firft points 1 and 6 are to be drawn to
the point of fight K, Thus between the two rays I K and 6
K you have the meafure of fix feet, which is the Height to he
given the figures. Then from all the other divifions 12, 18,
24, 30, &c. draw lines to the point of diftance L ; and in the
interjections made by the rav 6 K draw little parallels to the
bafe line between the rays I K and 6 KL. Thele parallels will
give the Heights of figures unequally high, but at the fame dif-
tance ; which may be proved by comparing the meafures of the
■firft method with thoie of the fecond. See fig. r, 2.
It it be afked how much each figure is diminifhed from the
nrft, which is fix feet high, you need only to take the Height
of the figure required in your comnafles, and fet it off on your
E e 4. little