The Complex Spider’s Web
Reading edition
A single strand of a spider’s web may consist of several thousand separate filaments. On the creature’s abdomen are four to six teat-like organs. Each secretes through several hundred extremely minute tubes a viscous fluid which hardens immediately when exposed to air. The spider attaches its abdomen to some solid object and pulls out the threads by moving its body forward. The hind feet are used to bring the hundreds of filaments into a single thread.