When you think that it is well dried you place it upright on the upper end of an inclined board, or flat ruler, leaning on a pile of books for example. You will then see the paper cylinder lie down, get up and so on till it reaches the bottom of its course.
The effect is very curious and will be more so if you are somewhat of an artist, and able to draw or paint a figure on the cylinder.
To Cut a Bottle With a String.
Gum first two circular pads of paper on each side of the spot where you intend to cut your bottle. These pads are obtained by gumming several strips of paper one over the other, so as to leave between them a groove on which you wind the string round once.
Catch hold of the extremities of the string, and draw it to and fro, see-saw fashion, by which friction the part of the glass operated on will be heated.
As soon as you think that the glass is hot enough, plunge the bottle in cold water, which you will have placed handy before, and at the spot where the friction was exercised the glass will be clean cut. According to the thickness of the glass, more or less heat must be produced. This process is infallible.