Haw does a spider spin from tree to tree?
Everybody loves to watch a tightrope walker perform. We hold our breath and wonder how anyone can, how anyone dares walk around so high in the air. But a little spider is a far cleverer aerial acrobat. For her size, she can trip farther and faster than any human tightrope artist in the world. The best, the very best aerial acrobatics occur in the morning, and, in order to see the show, you must be up at dawn and outside when the grass and the shrubbery are wet with dew. The star performer is no bigger than the nail. On your little finger, so you had better take along a magnifying glass. She is a spider, and, to her, the stunning show is just a normal part of her morning duties. She is, of course, a spinner of the finest of fine silken threads. Her spinning material is manufactured in special cells at the tail end of her fat, round abdomen. It is manufactured in liquid form and squirted out through tiny holes called spinnerets. In the air, the liquid spray quickly dries into a thread of
