Calcium sulfate an unusual property: when mixed with water at normal (ambient) temperatures, it quickly reverts chemically to the preferred dihydrate form, while physically "setting" to form a rigid and relatively strong gypsum crystal lattice: This reaction is exothermic and is responsible for the ease with which gypsum can be cast into various shapes including sheets (for drywall), sticks (for blackboard chalk), and molds (to immobilize broken bones, or for metal casting). Mixed with polymers, it has been used as a bone repair cement. Small amounts of calcined gypsum are added to earth to create strong structures directly from cast earth, an
What Are Little Boys Made Of? appear in several popular songs, including "Nothing Can Change This Love" by Sam Cooke from 1962 and "Sugar and Spice" by The Searchers, from 1963. "Sugar and spice, and all things nice" is also a verse in the Stone Roses early single "Sally Cinnamon". Van Halen in 1991 released the song "Poundcake," which contains part of the lyrics in the beginning of the music video. Alternative rock band Garbage incorporate the words of the rhyme in their song, "What Girls Are Made of," on the Deluxe edition of their 2012 studio album "Not your Kind of People". In October, 1966,