Selling a used copy of Conjurers' Hydraulic and Pneumatic Secrets by S. H. Sharpe. This is a hardcover, with dustjacket. Book has some light scratches, light yellowing from age, and some light corner bumps. There's also an old Denny and Lee price sticker on the inside dustjacket flap. All pages intact and fully readable
You show three black phonograph records to the audience. The first black record is placed on a record and a colored silk is pushed through the record hole. When you remove the record from the sleeve, it has magically changed its color to that of the silk. This is repeated with the other two records. Nothing is found when you open the sleeve to show the inside .
In effect the liquid in the glass visibly diminishes from a glass full, to a fraction of the original contents. This is under your control the entire time. Great for magicians, ventriloquists, puppeteers, comedians, etc.This is VERY easy to learn!