INSECT TR GL OD YTES. 



133 





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FIG. 45. — COTTON-LINEB NEST OF TURRET-SPIDER. 



rience and readily adapted herself to it. It is impossi- 

 ble to think that she ever before had knowledge of 

 cotton and its uses for wadding. Her first purpose was 

 evidently to remove the material from her burrow ; but 

 by the contact of her highly sensitive feet and mouth 

 organs with the soft fabric the suggestion was raised that 

 it might be utilized for lining her nest instead of silk. Or 

 perhaps we may say that the sensation produced l)y 

 handling the soft cotton started a train of associations 

 that led the animal to deal with a sul)stance quite 

 foreign to her, precisely as she habitually deals with the 

 silk which she secretes. Whether the two theories do 

 not amount to the same in the end is a point which I 



