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This article presents technical abstracts and notes related to police science. The article "Forensic Applications of the Scanning Electron Microscope," by I. Covin and O. Jahari, presents the proceedings of a forensic workshop held in May, 1971. The article " The Status of Polygraph Legislation of the Fifty States," by Clarence H.A. Romig, discusses the history of the polygraph, the physiological and psychological aspects involved, and the legal status of the polygraph in the United States; part two of this paper continues with the various uses being discussed and concludes by presenting both sides of the argument over the use of the polygraph. The concluding segment covers legislation affecting the use of the polygraph including licensing legislation in eleven states. The series is concluded with a model set of minimum standards for operator certification and regulation. The article " Ubiquitous Reds: A Local Perspective on Secobarbital Abuse," by Bryan S. Finkle, discusses the social background and results of a study and evaluation of secobarbital abuse in Santa Clara County, California. The study also reports the results of analytical analysis showing great variations of the secobarbital content of capsules and also shows that the blood levels are significantly in excess of therapeutic levels which is a possible explanation for a rapid use in secobarbital fatalities among young people and the drug involvement in road traffic accidents.