Introductory material
Reading edition

Octr. 19th
When Potash was introduced into a tube having a platina wire attached to it so & fixed into the tube so as to be a conductor ie. so as to contain just water enough though solid— & inserted over mercury, when the Platina was made neg—No gas was formed & the mercury became oxydated— — —a small quantity of the athalyer was produced around the plat: wire as was evident from its gassy alteration by the action of water
——When the mercury was made the neg: gas was developed in great quantities from the pos: wire, & some from the neg mercury & this gas proved to be pure? oxygene Capil Expr.—
proving the decompr of Potash
THE LIFE OF SIR HUMPHRY DAVY, BART. &c. &c.