This document consists of two separate papers. The first paper, "A Balanced Marine Aquarium" (Barbara Jayne Palko), discusses various aspects of a balanced marine aquarium. Information provided includes the basic and optional equipment needed to construct a balanced aquarium, preparations for setting up the aquarium, preparing the…

Provides background information on the earthworm. Reviews basic anatomical, behavioral, and reproductive facts. Offers suggestions for procuring, maintaining, and breeding colonies for classroom use. (ML)

Describes the distinctive features of the common snapping turtle. Discusses facts and misconceptions held about the turtle. Provides guidelines for proper care and treatment of a young snapper in a classroom environment. (ML)

Provides background information (in outline form) on the bottlenose dolphin. Includes facts on characteristic anatomical and physiological features and highlights behavioral and communication patterns of dolphins. Also includes an explanation of ecolocation. (ML)

Describes methods for studying the direct effect of thyroid hormones on the induction of metamorphic change in amphibians. (CS)

This copiously illustrated document is designed to be a field quide to birds of prey that are common to Wisconsin, as well as to some that enter the state occasionally. An introduction discusses birds of prey with regard to migration patterns, the relationship between common names and the attitudes of people toward certain birds, and natural signs…

Developed to integrate fundamental oceanographic concepts with basic research, this book presents information about the Pacific Ocean off the coast of Oregon. Characterizations and descriptions of the marine environment from the coastline to approximately 200 miles offshore are provided for the interested public. Chapter topics include: (1) marine…