Harding, James Duffield: Drawing Models, And Their Uses (London, 1854)

COMBINATION OF THE MODELS.

37

Enough has been done to show that, in order to obtain
any amount of variety, it is not always necessary to dis-
member any subject; changing the places of the divisions
of any combination; the kind of roofs, the position of their
ridges, the places of the roof, windows, and chimneys, are
enough to produce a large amount. It would be useless,
also, to add further examples; what has been shown is
enough to make the combination of the Models perfectly
comprehended, and to serve as a sufficient initiation for
combining them as fancy or necessity may dictate. When
any favourable structure may have been raised, it is only
necessary to preserve a ground plan of it, such as Plan 4,
in order to raise it again at any time when demanded;
but for such a record, it would be necessary to make as
many drawings as have been given of Plan 3, or submit
to the loss of many excellent subjects often accidentally
obtained.

The following two plans are given as examples of the way
in which the Models may be combined, so as to produce a
series of angles, not always at right angles with each other;
They somewhat resemble the plans of fortification, and are
such as require to be placed actually before the eye of a
pupil, in order to give a better idea of the complicated
forms such angles assume when seen from different points
of view; and when the visual rays are inclined to their
planes.