18 
MANUAL OF NATURE STUDY. 
Collect an ant, a bee, a wasp, a butterfly, a grass¬ 
hopper, and notice that they are all alike in that 
they are all cut into in two places, hence name in¬ 
sect, cut into . 
1. Let the pupils point out the head, chest, and 
abdomen in each case. 
2. Point out the apparatus that belong to the 
head, viz.: mouth, eyes and feelers. 
If you have a hand lens pass it around and let 
the children see that each insect is provided with 
compound eyes so that it can see in every direct¬ 
ion without turning the head. 
How different is the grasshopper’s eye from the 
eye of the little boy or cat. Besides the compound 
eyes, one on each side with many little faces, the 
insect also has three little, simple eyes. See if the 
children, by aid of the lens, can find them. Why 
do you suppose they have those three simple eyes? 
2. The chest has three pairs of legs below and 
two pairs of wings above. Let the children find 
these and count them and see that they all belong 
to the chest or thorax. To little children there 
may appear exceptions to this rule as every insect 
of the group diptera , of which the common house 
fly is an example, has but one pair of wings. In 
place of the second pair two knobbed threads, or 
“balancers” appear. But this should not be dis- 
