Experiments and observations on American
Qar. cvs potashes.
Devt, Lewis, William, 1714-1781.
XG Experiments and observations on American «TOT potashes. With an easy method of determining
.L58E their respective qualities. By W. Lewis ... Made at the request of the Society for the Encouragement of Arts, Manufactures, and Commerce, in consequence of an application from the House of Representatives of Massachusetts Bay.
London: Printed by order of the Society. M DCC LXVII. (17673
lp. {. ,34p. & 21em. (8vo) MB-Rev.