To make an accurate three-dimensional model of any crystal, plot partial stereograms of one face from each form on the crystal and all the faces with which it shares edges. Rotate each partial stereogram until the chosen pole is on the W radius of the . . .

A wholly general method is presented to produce accurate drawings of any crystal in any orientation from a stereogram of the crystal. A standard stereogram is prepared with all faces plotted, and the desired viewpoint is marked. The stereogram is then . . .