| http://www.w3.org/ns/prov#value | - B???champ then obtained chalk, and subsequently a block of limestone from a quarry, and engaged in great precautions to ensure that they did not contact the air.??? The limestone inverted the sugar, even when creosote was added.??? B???champ was shocked to find that a mineral such as limestone would invert the sugar.??? It became obvious that there was a difference between chalk and pure calcium c
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