In order to cover the other surface, Fig. 3, all that is now necessary is to lower the angles, viz.: angle A’, must be in front of angle A, angle B’ in front of angle B, and angle C’ in front of angle C. When the angles are lowered in this way, the two surfaces will be quite similar, and can be covered one by the other.
Fig. 4.
This experiment can be made either with one or the other sheet, in lowering or raising the angles.
In the example shown here it is the fourth Figure which is destined to cover the other one.
When the operation is terminated as indicated above, part M, of Fig. 4, will be at M’ of Fig. 3, and part O at O’ of the covert figure.
A Cheap Shooting Gallery.
With a whalebone stay busk, make a bow and draw a target on a card. For the arrows, divide lengthwise a steel nib, choosing long shaped ones in the form of a lance and fix each part at the end of a match. You now have complete a saloon shooting gallery, inoffensive and sufficiently recreative at least for your smaller friends.
