"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…

In the gold extraction process, finely crushed ores are leached in vats with a very diluted solution of Potassuim Cyanide (KCN), containing 0.05 to 0.3 percent KCN (or its equivalent, Sodium Cyanide, NaCN) which is allowed to remain for twelve to twenty-four hours to dissolve the gold.

Cyanide Leaching Tank (Gold Extraction)

In the gold extraction process, finely crushed ores are leached in vats with a very diluted solution…

"The Danglish apparatus consists of the following parts: 1st, a generator A, in which carbonic acid is evolved from chalk by sulphuric or hydrochloric acid; 2nd, a gas-holder, in which the carbonic acid is stored for use after being purified in passing through water; 3rd, an air pump, for pumping carbonic acid from the gas-holder, and forcing it into the water vessel and mixer; 4th, another air-pump, for withdrawing atmospheric air from the mixer before the aerated water is admitted; 5th, a water vessel B, a strong cylinder of copper capable of withstanding a pressure of 100 lbs on the square inch, and of sufficient size to contain water for a full charge of the mixer; attached to this water vessel there are a gauge-glass C, and a pressure gauge D, for indicating the pressure of gas as it is pumped in; 6th, the mixer E, a globular vessel of cast-iron, capable of bearing high pressure, through the center of which an axle runs, fitted with iron kneating arms extending to the circumference of the vessel." — Encyclopedia Britanica, 1893

Danglish Apparatus

"The Danglish apparatus consists of the following parts: 1st, a generator A, in which carbonic acid…

This is a diagram of the digestive tract. Notice how the food is submitted to the action of alkaline, acid, and then alkaline fluids.

Digestive Tract

This is a diagram of the digestive tract. Notice how the food is submitted to the action of alkaline,…

"...shows two crystals of tartaric acid, a a right-handed crystal of dextro-tartaric acid, and b a left-handed crystal of laevo-tartaric acid. The two crystals are enantimorphous." -The Encyclopedia Britannica 1910

Enantimorphous Crystals of Tartaric Acid

"...shows two crystals of tartaric acid, a a right-handed crystal of dextro-tartaric acid, and b a left-handed…

"The Fibula tied into a Knot after the Mineral Matter has been dissolved by Acid." — Blaisedell, 1904

Softened fibula

"The Fibula tied into a Knot after the Mineral Matter has been dissolved by Acid." — Blaisedell,…

This illustration shows the first stage in the manufacturing of glue. The material used for making the glue (either animal bone or hide) is soaked in a milk of lime (or in some cases, Hydrochloric or Sulfurous acid) to purify and loosen particles.

First Stage in Glue Manufacturing

This illustration shows the first stage in the manufacturing of glue. The material used for making the…

A woman mixing milk with acid to test it, using a rotary motion with the bottle not pointed towards her face.

Mixing milk

A woman mixing milk with acid to test it, using a rotary motion with the bottle not pointed towards…

"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…