History of malaria and brain which are the most constant post-mortem indications of chronic malaria infection. He related the prevalence of malaria in swampy areas to the presence of flies and recommended swamp drainage to prevent it. In the nineteenth century, the first drugs were developed to treat malaria and parasites were first identified as its source. French chemist Pierre Joseph Pelletier and French pharmacist Joseph Bienaimé Caventou separated in 1820 the alkaloids cinchonine and quinine from powdered fever tree bark, allowing for the creation of standardized doses of the active ingredients. Prior to 1820, the bark was simply dried, ground to a
Properties of water in the dihydrogen monoxide hoax. Other systematic names for water include "hydroxic acid", "hydroxylic acid", and "hydrogen hydroxide", using acid and base names. None of these exotic names are used widely. The polarized form of the water molecule, , is also called hydron hydroxide by IUPAC nomenclature. "Water substance" is a term used for hydrogen oxide (HO) when one does not wish to specify whether one is speaking of liquid water, steam, some form of ice, or a component in a mixture or mineral. Properties of water Water () is a polar inorganic compound that is at room temperature a