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Methods for the detection and quantification of ammonium picrate and picric acid in soil and water were developed. Picrate ions were extracted from water directly or from acetone extracts of soil by solid-phase, acidic, ion-exchange materials. Elution from the ion exchangers was accomplished by converting the retained picrate to picric acid using strong aqueous, acid-organic solvent mixtures. The resulting colorless solution was then converted back to a colored picrate solution by dilution with water. Quantification and correction for background interferences were based on spectrophotometric measurements. A colorimetric, chemical confirmation of picrate was possible for the water method. The method detection limits were determined to be 1.3 micro g/g for soil and 3.6 micro g/L for water. Both methods can be implemented under field conditions. jg p.2

1Sheridan Road Mystery

By Paul Thorne and Mabel Thorne

A shot rings out in the middle of the night in a quiet Chicago neighborhood. Patrolman Murphy is directed to an apartment where a man says the shot came from. The apartment is locked and apparently empty. Was there a murder here? And if so, where is the victim? (summary by J. M. Smallheer)

2Sham Princess

By Eglanton Thorne

Bertram Sinclair and his sister Eleanor are orphans living in squalid conditions. Bert is watching as his sister "Prin" lies sick and dying of measles and "brownkitis". Prin has dreamed of being a princess, and has tried to persuade everyone she is one, indeed, proving it with the aid of trinkets she has stolen, but now the truth has come out. Will the law take a hand, or will the rightful owner show compassion? - Summary by LynneT