Search Results

• 
  Photographs

  Apparatus for oxidation of ammonia

  • 1927-Jul-26

  General view of an apparatus used to oxidize ammonia at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.

  The Fixed Nitrogen Research Laboratory (F.N.R.L.) was…

  • Subject Nitrogen fertilizer industry, Nitrogen--Fixation, United States. Bureau of Chemistry and Soils, Chemical reactions, United States. Department of Agriculture, Scientific apparatus and instruments
• 
  Photographs

  Experimental apparatus for production of hydrogen

  • 1927-Jul-26

  General view of an experimental apparatus to test the production of hydrogen from methane and steam at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.

  The Fixed…

  • Subject Nitrogen fertilizer industry, Nitrogen--Fixation, United States. Bureau of Chemistry and Soils, United States. Department of Agriculture, Scientific apparatus and instruments
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  Photographs

  Ammonia-carbon dioxide pump and Urea autoclave

  • 1927-Jul-26

  General view of the ammonia-carbon dioxide pump and Urea autoclave used at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C.

  The Fixed Nitrogen Research Laboratory…

  • Subject Nitrogen fertilizer industry, Nitrogen--Fixation, United States. Bureau of Chemistry and Soils, Autoclaves, United States. Department of Agriculture, Scientific apparatus and instruments, Machinery
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  Photographs

  V.L. Gaddy with constant-temperature bath at Fixed Nitrogen Research Laboratory

  • Circa 1927

  General view of V.L. Gaddy demonstrating an apparatus used to create a constant-temperature bath to determine the equilibrium of Urea, a water-soluble powder form of carbonic acid frequently used as a fertilizer and…

  • Subject Nitrogen fertilizer industry, Nitrogen--Fixation, United States. Bureau of Chemistry and Soils, United States. Department of Agriculture, Employees, Scientific apparatus and instruments, Gaddy, V.L.
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  Photographs, Portraits

  Portrait of Herbert Freundlich (1880-1941)

  • 1920s – circa

  Portrait of Herbert Freundlich (1880-1941). A student of Wilhelm Ostwald, Freundlich received his doctorate from the University of Leipzig in 1903 following his dissertation on the precipitation (coagulation) of colloid…

  • Subject Kaiser Wilhelm-Gesellschaft zur Förderung der Wissenschaften, Chemists, Portraits, Freundlich, Herbert, 1880-1941
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  Photographs, Portraits

  Portrait of Marston Taylor Bogert (1868-1954)

  • 1920s

  Portrait of Marston Taylor Bogert (1868-1954), American Chemical Society President (1907-1908) known for his work on the synthesis of heterocyclic compounds, dyes, pharmaceuticals, and perfumes.

  Marston Taylor Bogert…

  • Subject International Union of Pure and Applied Chemistry, Chemists, Chemistry, Organic, Portraits, American Chemical Society, Columbia University, Bogert, Marston Taylor, 1868-1954
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  Photographs, Portraits

  Portrait of Leo Hendrik Baekeland (1863-1944)

  • After 1920 – 1944

  Portrait of Leo Hendrik Baekeland (1863-1944), inventor of Bakelite, the first fully synthetic plastic.

  • Manufacturer Underwood & Underwood
  • Subject Portrait photography, Inventors, Bakelite, Baekeland, L. H. (Leo Hendrik), 1863-1944, Plastics
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  Engravings, Prints, Portraits

  Professor Wohler

  • After 1840 – before 1940

  A half-length portrait of Friedrich Wöhler (1800–1882), a German chemist.

  • Artist Cook, Conrad
  • After L'Allemand, Conrad, 1809-1880
  • Subject Wöhler, Friedrich, 1800-1882