First, here is its head with two great eyes. We will soon look at the eyes. Then you will see how curious they are.
There are, besides the big eyes, three little eyes. These are set on the top of the head. Then, too, on the front of the head we find a trunk or tube. And here is a pair of feelers. Inside the head is the brain, very much like a worm’s brain. It is only a tiny white dot.
Next behind the head is the chest. The head has the shape of half of an egg laid sidewise. The chest is nearly square. It is made of three rings.
On the first ring is a pair of legs. On the next ring is a pair of legs and a pair of wings. The fly has only one pair of wings.
On the Wing.
On the last ring is a pair of legs. And near these legs are two little clubs covered with fine hair. It is by means of these clubs that the fly can halt or balance on the wing. They help the fly as the second pair of wings helps other insects.
The third part of a fly’s body is the largest. It is egg-shaped, and joins the chest by the thick end. This part also is made of rings.
Now let us look at the head of a fly. The feelers are like two long, fine plumes made in joints. Most people think these feelers are made to touch with. Their full, true use is not yet known.
You see, even in a fly there is much left for some of you to find out.