DOI Page / Citation link:
https://doi.org/10.11588/diglit.18825#0250
100
[lect. vi.
PLATE LXXV.
As the first approach in appearance toward old age,
we begin by enlarging the (frontal sinus, or) cavity
above the nose : thereby forming a considerable pro-
tuberance, in that part. Then, by taking away the
teeth of the upper-jaw ; we move the point of resist-
ance to the under-jaw, from the teeth to the gums,
and to the bone of the jaw itself; the same depriva-
tion being suffered by the under-jaw, the mouth be-
comes elevated (at the same time falling back) from
D. E, to d, e. Next we shall draw the racial line
Jfom N, though the frontal prominence g, to (), and
Yy then placing one foot of the compasses on A, the
articulating apophysis of the under-jaw (at the ear)
we trace with the opening A, C. (the former chin)
the facial line C, c, till it cuts the facial line in O,
(which now becomes the place of the chin) then
drawing also from A, the line B, b ; we finish the
cKjn; and unite the under-lip with the upper at
d, e : drawing also the ear M, toward m ; and now
the face of mature age, assumes the aspect of old age.
It deserves notice, that the skin of the ears in old
age becomes more ample ; and this part of the head
lengthens.
This experiment may be repeated in a directly
contrary manner: i. e, with design to change the
head of old age, into that cf mature life and vigour.
In which case we must decrease the frontal sinus G>
g, h ; and pare oft the projection to render it flatter:
we must also make room for the teeth, and their ap-
pendages : which very considerable addition will
drive down the mouth from d e, to D E, and will
also at the same time projeCl it, and, by keeping the
lower-jaw in its place, will move the point of the
chin from c, to C; thereby, more or less moving
each of the parts which accompany it, throughout
the whole of its course, from thence (C) to L, to B,
and to M, its iunclion with the lower part ofthe ear.
PLATE
[lect. vi.
PLATE LXXV.
As the first approach in appearance toward old age,
we begin by enlarging the (frontal sinus, or) cavity
above the nose : thereby forming a considerable pro-
tuberance, in that part. Then, by taking away the
teeth of the upper-jaw ; we move the point of resist-
ance to the under-jaw, from the teeth to the gums,
and to the bone of the jaw itself; the same depriva-
tion being suffered by the under-jaw, the mouth be-
comes elevated (at the same time falling back) from
D. E, to d, e. Next we shall draw the racial line
Jfom N, though the frontal prominence g, to (), and
Yy then placing one foot of the compasses on A, the
articulating apophysis of the under-jaw (at the ear)
we trace with the opening A, C. (the former chin)
the facial line C, c, till it cuts the facial line in O,
(which now becomes the place of the chin) then
drawing also from A, the line B, b ; we finish the
cKjn; and unite the under-lip with the upper at
d, e : drawing also the ear M, toward m ; and now
the face of mature age, assumes the aspect of old age.
It deserves notice, that the skin of the ears in old
age becomes more ample ; and this part of the head
lengthens.
This experiment may be repeated in a directly
contrary manner: i. e, with design to change the
head of old age, into that cf mature life and vigour.
In which case we must decrease the frontal sinus G>
g, h ; and pare oft the projection to render it flatter:
we must also make room for the teeth, and their ap-
pendages : which very considerable addition will
drive down the mouth from d e, to D E, and will
also at the same time projeCl it, and, by keeping the
lower-jaw in its place, will move the point of the
chin from c, to C; thereby, more or less moving
each of the parts which accompany it, throughout
the whole of its course, from thence (C) to L, to B,
and to M, its iunclion with the lower part ofthe ear.
PLATE