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"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative element copper oxide. The Edison cell is suitable for large stationary gas engine ignition, ralroad crossing signals, electroplating, fire alarms, telephone cicuits, etc." -Hawkins, 1917

Edison Cell

"Edison cell, type RR. The electrolyte used is caustic soda, the positive element zinc, and the negative…

"Carbonic acid water, generally spoken of as Sodawater, though it seldom contains any soda. It is prepared on athe large scale by placing whiting, chalk, or carbonate of lime in a lead vessel with water and sulphuric acid, when the sulphuric acid combines with the lime to form stucco or sulphate of lime, and carbonic acid is evolved as gas." — Chambers' Encyclopedia, 1875

Soda Water

"Carbonic acid water, generally spoken of as Sodawater, though it seldom contains any soda. It is prepared…

"Carbonic acid water, generally spoken of as Sodawater, though it seldom contains any soda. It is prepared on athe large scale by placing whiting, chalk, or carbonate of lime in a lead vessel with water and sulphuric acid, when the sulphuric acid combines with the lime to form stucco or sulphate of lime, and carbonic acid is evolved as gas." — Chambers' Encyclopedia, 1875

Soda Water

"Carbonic acid water, generally spoken of as Sodawater, though it seldom contains any soda. It is prepared…