ught to be one sixth
of the jamb, with a projection equivalent to its height. The style of
carving of the cymatium with its astragal should be the Lesbian. Above
the cymatium of the lintel, place the frieze of the doorway, of the
same height as the lintel, and having a Doric cymatium and Lesbian
astragal carved upon it. Let the corona and its cymatium at the top of
all be carved without ornamentation, and have a projection equal to its
height. To the right and left of the lintel, which rests upon the jambs,
there are to be projections fashioned like projecting bases and jointed
to a nicety with the cymatium itself.

3. If the doorways are to be of the Ionic style, the height of the
aperture should be reached in the same manner as in the Doric. Let its
width be determined by dividing the height into two and one half parts
and letting one of them form the width at the bottom. The diminutions
should be the same as for Doric. The width of the faces of the jambs
should be one fourteenth of the height of the aperture, and the cymatium
one sixth of the width. Let the rest, excluding the cymatium, be divided
into twelve parts. Let three of these compose the first fascia with its
astragal, four the second, and five the third, the fasciae with their
astragals running side by side all round.

4. The cornices of Ionic doorways should be constructed in the same
manner as those of Doric, in due proportions. The consoles, otherwise
called brackets, carved at the right and left, should hang down to the
level of the bottom of the lintel, exclusive of the leaf. Their width on
the face should be two thirds of the width of the jamb, but at the
bottom one fourth slenderer than above.

Doors should be constructed with the hinge-stiles one twelfth of the
width of the whole aperture. The panels between two stiles should each
occupy three of the twelve parts.

5. The rails will be apportioned thus: divide the height into five
parts, of which assign two to the upper portion and three to the lower;
above the centre place the middle rails; insert the others at the top
and at the bottom. Let the height of a rail be one third of the breadth
of a panel, and its cymatium one sixth of the rail. The width of the
meeting-stiles should be one half the rail, and the cover-joint two
thirds of the rail. The stiles toward the side of the jambs should be
one half the rail. If the doors have folds in them, the height will
remain as before, but the width sho