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"A simple battery constructed from sulphuric acid and zinc ." -Avery 1895

Simple Battery

"A simple battery constructed from sulphuric acid and zinc ." -Avery 1895

"If we take for example, a slip of zinc, and another of copper, and place the in a cup of diluted sulphuric acid, their upper ends in tontact, and above the water, and their lower ends separated, then there will be constituted a galvanic circle, of the simplest form, consisting of three elements, zinc, acid, copper." -Comstock 1850

Galvanic Battery

"If we take for example, a slip of zinc, and another of copper, and place the in a cup of diluted sulphuric…

"Take the zinc from the tumbler of acid and, while it is yet wet, rub thereon a few drops of mercury...replace the zinc in the acid, and notice that no bubbles are given off. Place a copper strip in the solution...bring the strips together at their upper ends as shown. Connect the metals and observe the result." -Avery 1895

Current Electricity

"Take the zinc from the tumbler of acid and, while it is yet wet, rub thereon a few drops of mercury...replace…

"Daniel gravity cell, 'crowfoot' pattern. this is a two fluid cell in which gravity instead of a prous cup is depended upon to keep the liquids separate. The two solutions consist of copper sulphate and diluted sulphuric acid, the elements being made of zinc and copper." -Hawkins, 1917

Daniel Cell

"Daniel gravity cell, 'crowfoot' pattern. this is a two fluid cell in which gravity instead of a prous…

"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…

"...is constructed with a plate of black oxide of copper suspended between two plates of zinc, and the fluid is a solution of caustic potash in water." -Atkinson 1903

Edison-Lalande Cell

"...is constructed with a plate of black oxide of copper suspended between two plates of zinc, and the…

"The elements are zinc and carbon. In the Greet cell, a zinc plate is suspended b a rod between two carbon plates, so that it does not touch them, and when the cell is not in use the zinc is withdrawn from the solution..." -Hawkins, 1917

Grenet Cell

"The elements are zinc and carbon. In the Greet cell, a zinc plate is suspended b a rod between two…

"...and is constructed with a zinc plate suspended between two carbon plates, so as to have two carbon surfaces exposed to the direct action of two zinc surfaces, and as close to them as praticable without contact, to reduce teh electric resistance through the fluid to the lowest degree." -Atkinson 1903

Grenet Cell

"...and is constructed with a zinc plate suspended between two carbon plates, so as to have two carbon…

"...and is constructed with a zinc plate suspended between two carbon plates, so as to have two carbon surfaces exposed to the direct action of two zinc surfaces, and as close to them as praticable without contact, to reduce teh electric resistance through the fluid to the lowest degree." -Atkinson 1903

Grenet Cell

"...and is constructed with a zinc plate suspended between two carbon plates, so as to have two carbon…

"Finally, the leather is rolled and compressed on a level zinc-lined wooden bed by a heavy hand roller, or on the platform of one of the numerous forms of machines designed for that purpose." —The Encyclopedia Britannica, 1910

Hand Roller

"Finally, the leather is rolled and compressed on a level zinc-lined wooden bed by a heavy hand roller,…

Hemimorphite is a sorosilicate mineral consisting of hydrous zinc silicate.

Hemimorphite

Hemimorphite is a sorosilicate mineral consisting of hydrous zinc silicate.

This illustration shows a beaker full of sulphuric acid and a stick of zinc, giving off hydrogen.

Hydrogen

This illustration shows a beaker full of sulphuric acid and a stick of zinc, giving off hydrogen.

"Partz acid gravity cell. In this form of cell, the electrolyte which surrounds the zinc is either magnesium sulphate or common salt. the depolarizer is a bichromate silution which surounds the perforated carbon plate located in the bottom of the jar. A vertical carbon rod fits snugly into the tapered hole in the carbon plate, and extends through the cover forming the positive pole." -Hawkins, 1917

Partz Cell

"Partz acid gravity cell. In this form of cell, the electrolyte which surrounds the zinc is either magnesium…

"Wheelock cell, the elements are carbon and zinc." -Hawkins, 1917

Wheelock Cell

"Wheelock cell, the elements are carbon and zinc." -Hawkins, 1917