linations; a gambrel roof.

63. _Cupola._--So called on account of its resemblance to a cup. A roof
having a rounded form. When on a large scale it is called a dome.

_Crown Post._--See _King Post_.

64. _Console._--A bracket with a projection not more than half its
height.

65. _Corbels._--A mass of brackets to support a shelf or structure.
Largely employed in Gothic architecture.

[Illustration: _Fig. 66.-Fig. 79._]

66. _Dormer._--A window pierced in a roof and so set as to be vertical,
while the roof slopes away from it. Also called a _Gablet_.

67. _Dowel._--A pin or stud in one block, or body, designed to engage
with holes in another body to hold them together in alignment.

68. _Drip._--That part of a cornice or sill course A, or other
horizontal member which projects beyond the rest, so as to divert water.

69. _Detents._--Recesses to lock or to serve as a stop or holding place.

70. _Extrados._--The exterior curve of an arch, especially the upper
curved face A. B is the _Intrados_ or _Soffit_.

71. _Engrailed._--Indented with small concave curves, as the edge of a
bordure, bend, or the like.

72. _Facet._--The narrow plain surface, as A, between the fluting of a
column.

73. _Fret, Fretwork._--Ornamental work consisting of small fillets, or
slats, intersecting each other or bent at right angles. Openwork in
relief, when elaborated and minute in all its parts. Hence any minute
play of light and shade. A, Japanese fretwork. B, Green fret.

74. _Frontal_, also called _Pediment_.--The triangular space, A, above a
door or window.

75. _Frustums._--That part of a solid next the base, formed by cutting
off the top; or the part of any solid, as of a cone, pyramid, etc.,
between two planes, which may either be parallel or inclined to each
other.

76. _Fylfat._--A rebated cross used as a secret emblem and worn as an
ornament. It is also called _Gammadium_, and more commonly known as
_Swastika_.

77. _Gambrel Roof._--A curb roof having the same section in all its
parts, with a lower, steeper and longer part. See _Curb Roof_ and
distinguish difference.

78. _Gargoyle._--A spout projecting from the roof gutter of a building,
often carved grotesquely.

79. _Gudgeon._--A wooden shaft, A, with a socket, B, into which is
fitted a casting, C. The casting has a _gudgeon_, D.

[Illustration: _Fig. 80.-Fig. 93._]

80. _Guilloche._--An ornament in the form of two or more bands or
strings twisted together