D.
Dentils.—Model dentils in the same manner as previously described for brackets, cantilevers, &c.
Dome.—Whatever the shape of the dome you wish to model may be, a pattern on which to form it had best be turned in wood; this forms a basis upon which the paper casing may remain until dry, and then the mould may be removed. It has not been thought necessary within the limits of this work to include the development of the various shapes of domes and cupolas, the student being deemed master of this branch of science. If, however, he should not be, any work on practical geometry will supply his wants.
Doors.—A copious description of the manner of modelling doors is given in those described for the House, page [51], ante.