Search Results
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2 items
Bausch & Lomb Abbe Refractometer
- 1937 – 1941
A: Refractometer
Instrument has round base with black finish; on the base is a double-sided circular glass mirror mounted to allow full rotation; a black pillar supports the prism alidade, the black brass cylindrical…- Manufacturer Bausch & Lomb Optical Company
- Subject Bausch & Lomb Optical Company, Refractometers, Optics
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18 items
Early Beckman facilities, Pasadena and South Pasadena
- Undated
- 1934 – 1935
- 1940
- 1946
- 1949
- 1950
A Pasadena garage was the first home of the National Postal Meter Company, founded by Arnold Beckman in 1934. The company soon became National Technical Laboratories, with a focus on pH meters. In 1935, the company…
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36 items
Arnold and Mabel Beckman photo album
- Circa 1915
- Circa 1935
Photographs of images from an album containing pictures of chemist Arnold O. Beckman and his wife, and Mabel Meinzer Beckman, taken during their courtship and the early years of their marriage. Images include Arnold O.…
- Subject World War (1914-1918), Beckman, Arnold O.
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Portrait of Paul Ehrlich (1854-1915)
- Circa 1920
Portrait of Paul Erhlich, recipient of the 1908 Nobel Prize in Physiology or Medicine for his contributions to immunology. Ehrlich was a German Jewish physician and scientist who worked in the fields of hematology,…
- Artist Voigt, Franz Wilhelm, 1867-1949
- Subject Ehrlich, Paul, 1854-1915
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Alchemist in Green Using Bellows
- Circa 1928 – 1965
An alchemist wearing a green robe uses a pair of bellows to control the heat of the fire beneath his crucible. Other vessels sit on the furnace at his side, and to his left a large still-head for distillation rests over…
- After Teniers, David, 1610-1690
- Subject Teniers, David, 1610-1690, Alchemy, Alchemy in art
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Choose... For the Bride
- 1936-Jun-20
Color print magazine advertisement for Community Plate silverware. This ad appeared in The Saturday Evening Post, June 20, 1936.
- Subject Silver-plated ware, Silverware, Electroplating, Oneida, ltd.
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The Quest for Beauty Goes On
- 1931-Jan-17
Color print magazine advertisement for Community Plate silverware. Illustration depicts a woman in a red dress holding a silver spoon, as well as fine silver of the "Noblesse Design." This ad appeared in The Saturday…
- Subject Silver-plated ware, Silverware, Electroplating, Oneida, ltd.
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2 items
Letter from Arnold Beckman to Thomas Herring
- 1937-Dec-07
Arnold Beckman offers a scathing critique of Herring's performance as a salesman of pH meters.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who…
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2 items
Letter from I. H. Lyons to Arnold Beckman
- 1937-Aug-25
This letter, written while Arnold Beckman was on a multi-city trip promoting his pH meter, concerns strategies for marketing the instruments and concern about the friction between a salesman and distributor.
Arnold…
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Fixed Nitrogen Research Laboratory personnel
- 1925-Nov-06
Group photograph of Fixed Nitrogen Research Laboratory personnel posed outside an unidentified facility. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in 1919 under the…
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L. Testa, glassblower, at work at U.S. Department of Agriculture
- 1931
General view of a glassblower, identified as L. Testa, working in an unidentified U.S. Department of Agriculture facility. Per a 1931 list of technical workers in the Department of Agriculture, Testa worked as a…
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Portrait of Henry G. Knight
- 1930s
Portrait of Dr. Henry G. Knight, Chief of the U.S. Department of Agriculture's Bureau of Chemistry & Soils.
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2 items
Experimental blast furnace on burden of phosphate
- 1930s
Two views of the experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed Nitrogen Research…
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Interior of Engine Room at the Fixed Nitrogen Research Laboratory
- 1932-Jan-19
General view of the Engine Room at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. showing assorted machinery and apparatus.
The Fixed Nitrogen Research Laboratory…
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3 items
Experimental blast furnace on burden of phosphate
- 1930s
Three views of the experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant.
The Fixed Nitrogen Research…
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Employees opening cinder-notch on No. 2 experimental blast furnace
- 1932-Oct-12
General view of unidentified employees opening the cinder-notch on the No. 2 experimental blast furnace on a burden (a load, especially a heavy one) of phosphate at the U.S. Department of Agriculture's Fixed Nitrogen…
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Experimental blast furnace at Fixed Nitrogen Research Laboratory plant
- 1930s
General view of an experimental blast furnace at a U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory plant. The Fixed Nitrogen Research Laboratory (F.N.R.L.) was established at American University in…
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Blowing out experimental blast furnace
- 1934-Jan
General view of the blowing out process for the experimental blast furnace at a Fixed Nitrogen Research Laboratory facility. The process of blowing out, also known as "raking out," is undertaken when production from a…
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2 items
Aerial view of U.S. Department of Agriculture facilities
- Circa 1930
Two aerial views of facilities believed to be associated with the U.S. Department of Agriculture.
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Technician with Fixed Nitrogen Research Laboratory apparatus
- 1920s
General view of an unidentified analytical apparatus and technician at the U.S. Department of Agriculture's Fixed Nitrogen Research Laboratory located in Washington, D.C. The Fixed Nitrogen Research Laboratory…
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3 items
U.S. Department of Agriculture buildings
- 1920s
Three exterior views of unidentified buildings believed to be associated with the U.S. Department of Agriculture.
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2 items
Aerial view of U.S. Department of Agriculture facilities
- 1936
Two aerial views of the U.S. Department of Agriculture complex located in Washington, DC. The second photograph was taken during the construction of the Administration Building and East and West Wings. The in-progress…
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Exhibit concerning fertilizer values
- Circa 1926
U.S. Department of Agriculture exhibition display concerning fertilizer values as determined by per cent of plant food. The display includes several photographs of a range of agricultural crops, including wheat, cotton,…
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Mr. Merz using apparatus to determine the hygroscopicity of fertilizer materials
- Circa 1928
General view of Mr. Merz using an apparatus to determine the hygroscopicity of fertilizer materials and mixtures at the the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in April…
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Dick Adams using apparatus to determine the hygroscopicity of fertilizer materials
- Circa 1928
General view of Dick Adams using an apparatus to determine the hygroscopicity of fertilizer materials and mixtures at the the Arlington Experimental Farm in Arlington, Virginia. Established by an act of Congress in…
