CANADA PORCUPINE 



73 



in a scale of intelligence, — skill in such tests being more closely 

 correlated with instinctive behavior than it is with general 

 mentality. 



ScdlQ : 7 errors 7oo S'ccoviXi 



lOOo 



A — Point where maze was shifted 18 inches. 



B — Point where maze was rotated 90 degrees. 



C — Point where maze was rotated 180 degrees. 



D — Point where maze was rotated 270 degrees. 



E — Point where maze was restored to initial position. 



F — Maze moved into barn rotated 180 degrees. 



G — Maze traversed in darkness. 



H — One hundred day memory test. 



Rotation of Maze. — Watson (44) sought to determine how his 

 rats learned the maze, as well as what sense they employed in 



