How can a fly walk on the ceiling?
The fly is an amazing and deadly creature. The fly spreads more death and suffering than an invading army. It does harm by spreading disease with its hairy feet and legs from the filth on which it feeds and in which it breeds. This little insect is wonderfully made. The housefly has two big brown eyes and each eye is made up of thousands of lenses. These two big eyes are called compound eyes. The fly also has, on top of the head, looking straight up, three simple eyes that can be seen only through a magnifying glass. The feelers, or antennae, of the housefly are used as organs of smell, not of feeling. These antennae can detect odours at great distances. The mouth is made up of an organ that people call a tongue, but it is really all the mouth parts of an insect combined in one.
