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| | The Good Old Days - Soda Water, p.153 |
 | | Up to that period it would appear that soda powders were in general use. |
 | | March 1812, state that “they have received for sale a small quantity of this pleasant drink and valuable remedy for indigestion, which they beg leave to assure their customers, is as highly charged with fixed air as that manufactured in London is, when recently made. |
 | | “It may not be necessary,” they continue, “to inform the public, that sodawater is prepared by super-saturating a solution of soda with carbonic acid gas, and that its place cannot be at all supplied by what is sold as soda powders, which are merely a mixture of salts that effervesce on being dissolved. |
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