...VOLTAIC electricity, a dark coloured inflammable substance separating from it on the negative surface, In the course of the spring and summer, I made many...and it left a black mass, which, when examined by the magnifier, appeared vitreous at the surface, and evidently contained a fixed acid. These circumstances...

...collect quantities of this substance for minute examination. When boracic acid, moistened with ivater, was exposed between two surfaces of platina, acted...paper, and it left a black mass, which when examined by the magnifier appeared vitreous at the surface, and evidently contained a fixed acid. * Page 164. These...

...acted on by the full power of the battery of five hundred, an olive-brown matter immediately began tp form on the negative surface, which gradually increased...paper, and it left a black mass, which when examined by the magnifier appeared vitreous at the surface, and evidently con-. tained a fixed acid. * Page 184....

...with water, was acted on by a power of 500, an olive-brown matter slowly formed at the negative pole, and at last appeared almost black. It was permanent...effervescence in warm nitrous acid. When heated to redness oti platina, it burnt slowly, and emitted white fumes, which slightly tinged litmus paper, and left...

...moistened with water, and exposed, between two surfaces of platina, to a battery of 500 pairs of plates, an olive-brown matter immediately began to form on...surface, which gradually increased in thickness, and at length became almost black. It was not changed by water, but dissolved with effervescence in warm nitrous...

...moistened with water, and exposed, between two surfaces of platina, to a battery of 500 pairs of plates, an olive-brown matter immediately began to Form on...negative surface, which gradually increased in thickness, an I at length became almost black. It was not changed by water, but dissolved with effervescence in...