D I ONCE A. 



129 



he thinks of danger. The jaws do not at 

 once close completely, however. The teeth 

 interlock and the jaws remain a little ajar, 

 and this allows any very small insect, which 

 is not worth the plant's consideration, to es- 



Fig. 88. 



cape. A larger insect, upon finding escape 

 impossible, would again touch the sensitive 

 hairs in his struggles, and the jaws would 

 close tightly and crush him. As soon as the 

 jaws come together a digestive secretion is 

 poured out from the leaf, and the jaws re- 



