The Plough Boy, notice of Josiah Warren's lard lamp
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"Weekly Summary," The Plough Boy, and Journal of the Board of Agriculture, 2, 52 (May 26, 1821), 415.
Josiah Warren, of Cincinnati, is the patentee of a lamp on a new plan, which is said, to a single family, will produce an annual saving of 20 dollars. Its light is clear and pleasant, and the volume of flame equal to that of two common candles.
