THE DEVELOPMENT OF AN INSTINCT 285 



eat in the dark, these chicks were not observed to peck during 

 the period of dark-room confinement. 



Shortly after being brought to the light, chicks that had 

 been in the dark-room five days were found to be negatively 

 phototropic, at least temporarily. 



Spalding has exaggerated the accuracy of pecking after arti- 

 ficial delay. The manifestations of fear after four days in dark- 

 ness, as reported by Spalding, were not observed in these chicks. 



