Page:American Journal of Psychology Volume 21.djvu/22

12 what she had done until she reached the floor and turned round. A little later in the series she hopped from the top and front edge of the box, turned as she did so, and seized the top string, D, in her claws. This is shown in Fig 4. This,



with slight modifications, to be pointed out later, came to be her fixed method of opening the door. And yet she tried this