of allethrin were added to the milk samples taken prior to the start of the spray program in amounts ranging from 0.1 to 0.5 p.p.m. Samples of 200 grams were then analyzed as described under the heading of procedure. The zero point of the scale was set with the fresh reagent (Table I).Known amounts of allethrin in a volatile solvent were added to 100-gram samples of meat. The solvent was INSECTICIDE RESIDUES allowed to vaporize and the meat extracted and tested as described under procedure (Table II).A. Activated carbon packed U-tube B. 500-ml. three-necked, round-bottomed flask, standard taper joints C. Hot water condenser D.
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