Hoffmann (Professor), 1839-1919., Plate, Adrian, inscriber., Harry Houdini Collection (Library of Congress) · New York : E.P. Dutton & Co. ; London : George Routledge & Sons, 1904. · leaf 87
Later Magic Wi make the construction of the apparatus pretty clear. a is a little flat bottle of, say, half an ounce capacity, … Fic. 48. and 6 is a test tube. In the mouth of each is a cork, perforated by two holes. s/ is a tube of glass or metal (or two tubes connected by a third of rubber) forming a channel of communication between the two vessels, which are enclosed in a little tin case, 7. The little bottle is destined…
