Ferric ChlorideNest and Hair My sister, a primary school teacher, was informed by one of her pupils that a bird had built its nest in the tree outside the classroom. "What kind of bird?" my sister asked. "I didn't see the bird, ma' am, only the nest," replied the child. "Then, can you give us a description of the nest?" my sister encouraged her . "Well, ma'am, it just resembles your hair. "
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