Apples. Apple injuries: A, Acid injury followed by decay, on Rome beauty, B, Acid injury, C, Arsenic injury followed by decay, on winesap, D, Arsenic injury on yellow Newtown, no decay, E, Alkali injury, F, Ammonia injury on winesap produced by 12 hours' exposure to atmosphere containing 3½ percent ammonia gas (A, B, C, D, E may be caused by faulty methods of washing fruit); [poster].