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THORBORG MARIE BRUNDIN 



toward the blackened eye, as well as those that travelled in a 

 curve toward the normal eye. Holmes found that the larger 

 Ranatras were able to correct the circus movements in a very 

 short period of time. I noticed the same in working with Or- 

 chestia, although the fact was by no means proved, as I used 



Figure 2. Paths of 0. traskiana with right eye blackened. 0. traskiana No. 2 

 turning toward normal eye. Starting point at bottom of figure. Consecu- 

 tive paths numbered. 



mainly the largest specimens for this experiment, and but few 

 small ones. 



After the blacking was removed, the animals, without ex- 

 ception, would turn toward or away from the previously black- 

 ened eye two or three times, before travelling directly toward 

 the light. The same formation of habits of turning Were found 

 by Holmes in Ranatra. 



