Sorry I missed this thread until now.
FWIW—it's likely baking powder.
Source: The Scientific American Cyclopedia of Formulas, Partly Based Upon the 28th Ed. of Scientific American Cyclopedia of Receipts, Notes and Queries, 1913
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Sorry I missed this thread until now.
FWIW—it's likely baking powder.
Source: The Scientific American Cyclopedia of Formulas, Partly Based Upon the 28th Ed. of Scientific American Cyclopedia of Receipts, Notes and Queries, 1913
