"Amazing Worm Facts." Retrieved from the World Wide Web on May 31, 2002: http://www.irisheartworm.com/primschool/psh1.html.

"The City Naturalist - Earthworms." Retrieved from the World Wide Web on December 21, 2002: http://www.nysite.com/nature/fauna/earthworm.html.

"Earthworm Enemies." Retrieved from the World Wide Web on August 6, 2002: http://ohioline.osu.edu/ hyg-fact/2000/2134.html.

"Map of Prospect Park." My illustration was adapted from a map on this World Wide Web site, retrieved on December 24, 2002: http://prospectpark.org/general/ parkmap.pdf.

Nancarrow, Loren and Janet Hogan Taylor. The Worm Book: The Complete Guide to Worms in Your Garden. Berkeley, California: Ten Speed Press, 1998.

"Segmented Worms." Retrieved from the World Wide Web on December 24, 2002: http://www.amnh.org/exhibitions/hall_tour/spectrum/27.html.