90 



THE REPORT OF THE 



[19 



midable~mandibieaJ(Fig. 51) toothed on the inner side, and furnished with fangs (falces) 

 (Fig. 52) connected with a poison-gland. "When the spider strikes a foe the virus is con- 

 veyed into the a wound through a small opening in the fang '(Fig. 52a). 



Fig. 46. 



Behind the mandibles on the under side are the maxillae or chewing organs, 

 the spider sometimes ^uses L these without exercising its mandibles I know 

 experience. m^ssj .01 ivu 



That 

 from 



Fig. 51. 



Fig. 50. 



I was sitting one day, intent upon a book, when a tickling sensation on the back of 

 my hand diverted my attention. I glanced down, and saw that a large spider was biting 

 me. I shook the creature off, and found a cup shaped hollow — into which I could have 

 dropped a mustard seed — where it had chewed away the flesh. Beyond a little passing 

 irritation, I suffered no ill effects from the bite. 



When the fangs of the spider are used upon a human being the effects may be exceed- 

 ingly unpleasant. I knaw a little girl who was wounded in the neck by a black spider. 

 The flesh became greatly swollen and much discoloared, and the child was very ill. She 

 was under the doctor's care for ten days. 



The silk-bag of caterpillars is near the head ; and the silken thread passes through 

 and is controlled by the jaws of the insect. The spinning organs of spiders are near the 

 other extremity of the body (Fig. 53). Inwardly they consisted of a number of glands, 



