[Delinquency and drugs in the Juvenile Court of Vaud canton-from 1971 to 1979].

The evolution of illicit drug consumption by adolescents in the canton of Vaud, 1971 to 1979, was assessed from data available by the Juvenile Court. Some results of this study are presented. The quantitative changes are then discussed in relation with changes in the social framework, such as the evolution of the ideology of delinquent adolescents, the altered concepts of repression by the police and jurisdiction, and the evolution of facilities for the care of drug users.