GULL CALL.                            
  
                                          
 THE SEAGULL IS A  METAPHYSICS  TRICK;  A 
 WORLD-BUILDER'S  SHORTCUT,  TO  DEFINE A 
 SECTION OF REALITY AND  IMPLY ITS  SIZE: 
 PLACE  A FLOCK OF  BIRDS AT THE EDGE AND 
 MAKE  THEIR  CALLS  TESSELATE  OVER  THE 
 ENTIRE VOLUME                            
                                          
 A  SEAGULL  CAN BE DEFINED BY  AS LITTLE 
 AS  FIVE  VERTICES;  SIX  TRIANGLES.  (I 
 WOULD  RECOMMEND  HANDLING IN SWARMS  OF 
 AT LEAST A DOZEN BIRDS.)