Aluminum silicate, kaolinum, fuller's earth and bolus alba are various names under which the essentially same substance is familiar to physicians. In 1906, Stumpf of Wurzburg published a detailed report of his experience with it in cholera under the title "A Reliable Method of Treating Asiatic Cholera and Severe Infectious Cholera Morbus, and the Importance of Bolus Alba (Kaolin) in the Treatment of Certain Bacterial Infections." His attention was early attracted to the possible disinfecting virtues of clay by his observation that cadavers exhumed after being buried in clay soil were always in a remarkable state of preservation in comparison with those in other soil. At that time his experience with the kaolin covered eight years. He believed that it owed its efficiency in bacterial infections to its action in depriving the bacteria of a suitable culture medium while mechanically burying them alive, separating them from the mucosa and other
KAOLIN IN THE TREATMENT OF BACTERIA CARRIERS. JAMA. 1915;LXIV(24):1991. doi:10.1001/jama.1915.02570500039018
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