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    • 1822

    The title page is digitized from the fourth edition of this seminal work responsible for exposing dangerous adulterations to foods and beverages. Food and drug purity legislation followed later in the nineteenth…

    • 1909

    Figure illustrates crystals from a fused alloy of copper and tin under magnification.

    This plate is found within The Romance of Modern Chemistry, which is a layman's introduction to topics in chemistry. Includes a…

    • 1909

    Figure illustrates salammoniac under magnification after being dissolved in water, causing the crystals to separate out from the solution.

    This plate is found within The Romance of Modern Chemistry, which is a layman's…

    • 1909

    Entitled "A Striking Feature of Modern Aluminum Works," photographic reproduction depicts water pipelines traversing a hillside in Kinlochleven in Argyllshire, Scotland. Accompanying text states how water power is used…

    • 1909

    Entitled "The Rubbish Heap of a Chemical Industry," photographic reproduction depicts mounds of alkali waste at the United Alkali Company Limited plant in St. Rollox, Glasgow, Scotland. Smoke stacks can be seen in the…

    • 1909

    Entitled "How the Microscope Reveals Adulteration," photographic reproduction depicts arrowroot adulterated with rice starch. Both under magnification, the left image illustrates rice starch with the right side showing…

    • 1909

    Entitled "Candle Moulding on a Large Scale," photographic reproduction depicts men working in a candle molding factory. Accompanying text describes the candle making process, consisting of wax being poured into molds…

    • 1909

    The top photographic reproduction is entitled "The Results of Assisting Nature" and depicts Swedish turnips grown with varying amounts of mineral manure and nitrogenous fertilizers. The bottom illustration is titled "An…

    • 1909

    Photographic reproduction depicts bundles of wheat grown on an experimental farm at Rothamsted, England with varying amounts of manure and chemical fertilizers. The first column shows the year 1878 with the second…

    • 1909

    This illustration depicts the visible solar spectrum compared to the visible spectrums of sodium, barium, strontium and hydrogen. Explanatory text states that the illustration is purely an example as the actual solar…

    • 1909

    Entitled "A Dangerous Area," photographic reproduction depicts a dynamite factory located in Cornwall, England. Accompanying text states how mounds help to localize damage in the case of an explosion. Pipes transport…

    • 1909

    Entitled "Working Under Cover," photographic reproduction depicts a man guarded by a rope screen as he operates a guncotton press. Guncotton, or nitrocellulose, is used in explosives.

    This plate is found within The…

    • 1909

    Entitled "One Stage in the Manufacture of an Explosive," photographic reproduction depicts women in a factory picking cotton waste. The cotton waste will be converted into guncotton, or nitrocellulose, which is used in…

    • 1909

    Entitled "What Modern High Explosives Can Do," photographic reproduction depicts the explosion of a wood boom located in a natural body of water. Debris, fire, smoke and water emanate from the explosion.

    This plate is…

    • 1909

    Entitled "Natural Gas in England," photographic reproduction depicts a source of natural gas found in Heathfield, Sussex, England. An onlooker observes the ignited source of natural gas.

    This plate is found within The…

    • 1909

    Entitled "Capping a Burning Oil Well," illustration depicts workers leading a crane with a cap to a petroleum fire. Explanatory text states how cap will be lowered upon the source of the petroleum leakage to extinguish…

    • 1909

    Entitled "Where it Rains Petroleum," illustration depicts oil wells in Baku, Azerbaijan. One oil well spews petroleum with workers and onlookers seen throughout the landscape.

    This plate is found within The Romance of…

    • 1909

    Entitled "A Big Blaze at Baku," photographic reproduction depicts a petroleum fire at the petroleum fields in Baku, Azerbaijan, formerly under Russian rule. The natural stores of oil gush from the earth's surface; when…

    • 1909

    Entitled "A Wonderful Ceiling," photographic reproduction depicts the Ballroom of stalactites found within the Luray Caverns in Luray, Virginia. Accompanying text describes how stalactites are formed by chalk-filled…

    • 1909

    Entitled "Where Stalactites Abound," illustration depicts two men exploring inside the stalactite caverns in Padirac, France. Rays of light emit from the opening at the top of the cavern. A stairwell descends into the…

    • 1909

    Entitled "A Wonderful Result of Prolonged Chemical Action," photographic reproduction depicts stalactites and stalagmites in the caves at Cheddar, Somerset, England. Accompanying text describes how the growths are a…

    • 1909

    Entitled "A Simple Chemical Change," photographic reproduction depicts a lump of quicklime in the top photograph with the middle photograph exhibiting steam emitting from the lump as a result of the addition of water. …

    • 1909

    Entitled "How a Man may Breath Safely in a Poisonous Atmosphere," photographic reproduction of the front and backside view of a man wearing a breathing apparatus. The caption states how the breathing bag delivers oxygen…

    • 1909

    Entitled "A Chemical Fire-Engine," photographic reproduction depicts firemen standing on a chemical fire engine truck. The caption states how a carbonate acid mixture results in carbon dioxide, which provides water…

    • 1886

    Illustrations printed in color of two varieties of cinchona bark. No. 109 is Cinchona Flavae cortex or yellow cinchona bark and No. 111 is Cinchonae Carthagenae cortex or Carthagena bark.

    This manual identifies plants…