Nicholson, Peter: The student's instructor in drawing and working the five orders of architecture (London, 1823)

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PLATE XIX.

PARTS AT LARGE AND IN DETAIL OF THE PRECEDING

EXAMPLE.

Fig. 1. Quarter plan of the column, at the superior
and inferior diameter of the shaft.

Fig. 2. Profile of the cornice to a large scale.

Fig. 3. Soffit of the corona, with a section of the
angular triglyph.

Fig. 4. One of the flutes shewing its proportions,
and the manner of drawing its elliptical segmental
figure: first draw the chord to its extent, and bisect
it by a perpendicular, set the depth of the flute on
the perpendicular, from one side of the chord, which
will give the extremity of the flute: from this ex-
tremity set the radius in the contrary direction, ex-
tending over the chord, which will give the centre:
divide the chord of the flute into five equal parts,
through the first division from each end, and from
the centre, draw two right lines, then upon the cen-
tre with the radius describe an arc limited by these
lines, and this will give the middle part of the flute ;
divide each of these radial lines into three equal
parts : take the first point of division in each next to
the arc, and describe each remaining part of the
flute, and this will form the elliptic segmental figure
of the flute.

Fig. 6. Lower part of the triglyph with the archi-
trave band, the tenia, and the pending gutta?.