237 



the front pair. When this silk is first spun, 

 tlie viscid matter forms a continuous layer of 

 liquid on the outside of it. But very soon ^^^ 

 this lajer breaks up into bead-like masses — 

 in a way similar to that in which tlie moisture l~^ 

 on a clothes-line on a foggy day collects into 

 drops (Fig. 125). 



There are two families, of spiders that have 

 spinning organs differing from those of all other spiders. They have 



Last two (tegments 

 of hind leg of 

 spider, showing 

 calamistrimi. 



128. — Web of a curled-thread iceaver. 



in front of the usual spinnerets an additional organ, which is named 

 the criheUuni (Fig. 126, c). This bears spinning tubes like the 



99 



^4 



337 



