INSECTS AND BIRDS. 



263 



hopper. If we could examine these eyes with a strong 

 magnifying glass we would find them made up of 

 many, perhaps 200 or 300, six-sided divisions much 

 like a honey-comb. These compound eyes in a dragon- 

 fly are so large that they nearly cover the front of the 

 head. In addition to the compound eyes, many insects 

 have one or perhaps three or four single eyes. The 

 grasshopper has three. 



How Insects Feel. An insect can feel the touch of 

 a pencil point, for example, anywhere on the body, for 

 its body is well supplied with nerves. But on the head 



DIFFERENT KINDS OF ANTENNAE. 

 I, bead-like; 2, bristle-like; 3, club-shaped; 4, feather-like. 



of a grasshopper are two long, slender feelers, or an- 

 tennae. These are ' the special organs of feeling. 

 They are made up of short ring-like divisions called 

 segments. Every insect has two of these antennae. 

 The antennae of some insects are short and club-shaped, 



