Analysis of Fish.- Analysis of Invertebrates.- Analysis of Water Plant Life.- Pollution Levels in the Aqueous Environment.- Quantitative Toxicity Data for Cations in Fish and Invertebrates.- Qualitative Toxicity Data for Organic Compounds in Fish and Invertebrates.- Qualitative Toxicity Data for Organometallic Compounds, Fish and Invertebrates.- Effect of Toxicants on Phytoplankton, Algae and Weeds.- Toxicity Index (LC50), Mean (Sx) and Percentile (S95) Concentrations of Toxicants.- Evaluating Toxicity via Water Analysis.- Toxicity Evaluation Based on Animal Tissue Analysis.