Applying Black's theory of law to crack and cocaine dispositions.

Since crack cocaine first appeared on the streets of the United States, the criminal justice system has been overwhelmed with poor, minority drug offenders. This situation can be attributed in part to the existence of mandatory minimum sentences that treat violations associated with crack cocaine more harshly than those associated with powder cocaine. Using data from New York City, the present study uses Black's theory of law to help understand discrepancies in crack and cocaine dispositions.

Determination of viability within serotypes of a soil population of Rhizobium leguminosarum bv. trifolii.

Concern has been raised about the percentage of viable cells within soil rhizobia populations measured by the immunofluorescence direct count method. The purpose of this study was to evaluate a direct viable count technique which is based on the fact that viable bacteria in natural populations undergo cell elongation when they are exposed to a combination of substrate and the inhibitor of DNA gyrase, nalidixic acid. A soil extraction procedure was developed to recover a high proportion of soil bacteria (ca.