Have Boom
Deru Dossie, Robert, d.1777T.
XH Observations on the pot-ash brought from .BT67 America. With respect to its goodness,sophis- .D74 & tication, &c. Verified by experimental exam-
| ination: together with instructions for deter-
mining the comparative value of any parcel, by expedient methods: to which, is subjoined, processes for making pot-ash and barilla, in North-America. The whole communicated to the Society for the Encouragement of Arts, Manu- factures and Commerce, by R. Dossie: and printed
x.
(See next card) MB