○儿吞铁针以乳香荔枝朴硝为末以犬豕脂入盐和之呑下自愈若碎铁则用皂荚硇砂雷敩曰铁遇神砂如泥似粉神砂应即硇砂也王少夫言外域收貘舌驼鸡涎便能吞铁一方以硇盐渍针而以负革脂凤仙子吞之因笑罗什无乃出此何子元曰铁鍖煅金银多年以槌皂角则一夕破铁中坚块曰核入香油则核散福铁皆块也笔醮白水周画击之随画处断此理亦奇[暄曰铁丱如指敲去随长]