I. Introduction. 1. Introduction to Cationic Surfactants / John Cross -- II. Biological Evaluation / Edward J. Singer. 2. Biological Properties and Applications of Cationic Surfactants / Dale L. Fredell. 3. Current Topics on the Toxicity of Cationic Surfactants / Hans P. Drobeck. 4. Environmental Aspects of Cationic Surfactants / Robert S. Boethling -- III. Analytical Evaluation / John Cross. 5. Volumetric Analysis of Cationic Surfactants / John Cross. 6. Potentiometry of Cationic Surfactants / Gwilym James Moody and J.D.R. Thomas. 7. Tensammetric Determination of Cationic Surfactants / M. Bos. 8. Analysis of Low Concentrations of Cationic Surfactants in Laboratory Test Liquors and Environmental Samples / James Waters. 9. Mass Spectrometry of Cationic Surfactants / Henry T. Kalinoski. 10. Chromatography of Cationic Surfactants: HPLC, TLC, and GLC / Bruce Paul McPherson and Henrik T. Rasmussen. 11. Molecular Spectroscopy of Cationic Surfactants / Foad Mozayeni.