The Structure and Habits of Spiders. 79 



caught, she gathers up part of the web till she 

 comes to him, covers him with silk, and carries 

 him up to her roost. 



There are other spiders of this group that 

 make round webs, just like those of the 

 Epeiridce, Fig. 28, except in the adhesive threads 

 being spun with the calamistrum. 



FLYING SPIDERS. 



Often, in summer, the bushes are covered 

 with threads, attached by one end, blowing out 

 in the wind ; and bits of cobweb are blowing 

 about, with occasionally a spider attached. To 

 account for such threads, curious theories have 

 been thought of ; among others, that spiders 

 are able to force the thread from their spin- 

 nerets, like water from a syringe, in any direc- 

 tion they choose. 



If a spider be put on a stick surrounded by 

 water, she manages, in course of time, to get a 

 thread to some object beyond, and to escape by 

 it. To find out how this is done, Mr. Blackwall 

 tried some experiments. He put spiders on 

 sticks in vessels of water, and they ran up and 

 down, unable to escape as long as the air in the 



