A Novel Table Mat.
To construct this original table mat 6 objects, always at hand when table is laid for a meal, are required; 3 knives and three tumblers of equal size and arrange the tumblers upside down, in the form of a triangle, and on each of them rest the handle of a knife. Cross the blades so that the first laid passes over the second and the second over the third, this latter passing over the first X.
The blades sustain themselves and you may place on them a dish or any other heavy object, without being afraid of a collapse.
The arrangement is sufficiently shown in the design with out requiring more detailed explanation.
Geometrical Paper Band.
Take a band of paper, say a postal wrapper; you observe that it has two lines and two surfaces (interior surface and exterior surface.) The problem is to arrange it so that it presents only one line and one surface. It may seem improbable, yet it is possible as you will see. Cut the band and gum together again the two pieces thus separated, after having turned over one of them as shown in figure as above. Arranged in this manner the paper has but one line and one surface, for it has the aspect of a screw without end.
