This morning my sister noticed a tiny little spider, only a few millimeters wide, sitting in its web. It was a type of orb weaver. It had built its web, which was only about the size of my palm, between a couple of bars of a railing. The spider was sitting in the center of the web, waiting for something small to come along and get caught. One of my friends suggested throwing an ant into the web; he wanted to see the spider at work. We looked around, but couldn't find the slightest trace of an ant. I didn't really care - I had already seen plenty of spiders catch their food - but my friend was not satisfied. He stuck the tip of his pocket knife gently into the web and jiggled it around. His efforts proved futile; the spider could tell it wasn't an insect and did not budge from his position at the center. My friend succeeded only in messing up the web. The upper-left corner is where my friend put his pocketknife. The entire web is only the size of my palm. Soon my sister fou