Notes on Insect Bionomics. 361 



prived of food variously from the time of the fourth moult, from 

 one day after the fourth moult, from two days after, from three 

 days after, and so on until individuals were obtained representing 

 a withdrawal of food supply for a period of but a day before the 

 normal time of giving up eating to begin spinning, through periods 

 of two days before, three days before, four, five and so on to 

 twelve days before, the twelve-day period being the whole of the 

 feeding period normally lasting from the fourth moulting up to 

 spinning time. The following table displays the conditions and 

 results of the experiment : 



