These are blown eggs containing lengthy slips of coloured paper, rolled up tightly. The introduction of the paper is thus managed. The egg blown and dried, a slit is made along one side with a piercing saw or fine file. A wire is then passed longitudinally through both thick and thin ends, one end of the paper inserted through the slit, and rolled up by means of the wire, twisted from the outside, until the egg is full. A piece of cotton is attached to the loose end of the paper, and the slit and holes in the ends of the egg closed up with plaster of Paris. At the conclusion of any trick in which real eggs have been used, one can be exchanged for a prepared egg, which is then broken, and the paper extracted, the piece of cotton at once showing where the loose end is to be found. Into a good-sized egg some fifty or sixty feet of paper may be secreted. The paper may be purchased at conjuring shops in large rolls; and the conjuror will find it better to prepare a quantity of eggs at a time.