This a rare Anverdi liquid effect that is described on page 95 of Anverdi 50 Years of Magical Creations. A glass is shown with a transparent tube. The performer places a colored silk into the glass. The glass and silk are then covered by the tube, but before the tube completely covers the glass, the silk can be seen to suddenly disappear. The performer shows the glass and tube empty and then re-covers the glass with the tube. When the tube is removed, a liquid is seen in the glass that matched the color of the previously vanished silk. Silk not included. Condition: Very Good.