What's the difference between stalactites and stalagmites?

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  • Barrans, Richard. "Baking soda." Argonne National Laboratory - Division of Educational Programs. http://www.newton.dep.anl.gov/askasci/chem99/chem99492.htm
  • Lyell, Charles. "The Student's Elements of Geology." Geology.com. http://geology.com/publications/lyell/
  • "Stalactite and stalagmite." The Columbia Encyclopedia, Sixth edition. Columbia University press, 2007. http://www.encyclopedia.com/doc/1E1-stalacti.html
  • "What is calcium carbonate?" Industrial Minerals Association - North America. http://www.ima-na.org/about_industrial_minerals/calcium_carbonate.asp