SCIENTIFIC RECREATIONS. 



space beneath the table, but the body of the individual who was really seated 

 there was concealed by two glasses placed at an inclination of 45 to the 



Fig. 142. Cylindrical Mirror and Anamorphosis. 



Fig. 143. Anamorphus design for the ten of hearts. 



walls on the right and left. The whole was arranged in such a manner that 

 the reflection of the walls coincided with the visible part of the wall at the 



