Describes a system in which organic chemicals are recoded for inventory control and reshelving purposes. The system works well in undergraduate organic chemistry or biology laboratories but can be expanded to handle a larger and more complicated inventory. (JN)

Reports on an explosion that occurred using Tollens' reagent, emphasizing that students should prepare the reagent immediately before use and discard it immediately after use by flushing it down the drain. States that under no conditions should Tollens' reagent be stored. (Author/JN)