INSECT ENaiNEEniNG. 



197 



FIG. 66. — BALLOONING OR FLYING SPIDERS. 



" Pardon me. I had taken too much for granted, 1 

 see. The spider, cUngmg to the post, sets its spinning 

 apparatus in operation ; the Uquid silk, as it issues from 

 silk glands through the many tiny tubes on the sjoin- 

 nerets, is immediately hardened at contact with the air, 

 is caught by the wind and drawn out into long threads. 

 Presently enough thread is spun out to overcome by its 



