<span>The rolling back of eyes is a sign our body gives us that it is now the time to relax. When a person faints, becomes unconscious or experiences extreme pleasure, the human nervous system sends out some signals which force the body shut down certain body parts to focus on pleasurable sensation. This happens to your eyes too, when our eye muscles completely relax and they roll out.</span>
I would say that probably classifying natural disasters and their impact on man would most likely be considered by William Hughes as true geography as rather than just describing earth's features it would show the impact of earth's processes on man.
