STINGS OP INSECTS. 



619 



barbed darts, which will penetrate the flesh deeply, 

 and, from a peculiar arrangement of their serrated edges, 

 their immediate withdrawal is prevented ; by the great 

 muscular effort required for this purpose, a small sac or 



i Bting of Wasp. 2j Sting of Bee. (The small circles show ;act nenrlf tbt 



