It is becoming increasingly realised that the oceans and rivers, in particular, are not unlimited reservoir into which waste can be dumped and that control of these emissions is necessary if complete destruction of the environment is to be avoided. T. R. Crompton has drawn together up-to-date information on these issues and on the relevant analytical methods needed by all experts active in environmental protection and toxicology.

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.