Search Results
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Portrait of Milton Whitney (1860-1927)
- 1910s
Portrait of Milton Whitney (1860-1927), Chief of the Division of Agricultural Soil (later alternately known as the Division of Soils and/or Bureau of Soils), a partner in the National Cooperative Soil Survey (NCSS).…
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Portrait of James Wilson (1835-1920)
- 1910s
Portrait of James Wilson (1835-1920), who served as Secretary of Agriculture from 1897 to 1913. Wilson's tenure as Secretary is regarded as a period distinguished by the modernization of agricultural methods, as well as…
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James Wilson (Secretary of Agriculture 1897-1913)
- 1910s
Photograph of James Wilson, Secretary of Agriculture from 1897 to 1913, seated in a horse-drawn carriage with an unidentified African American driver. Wilson's tenure as Secretary is regarded as a period distinguished…
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Mexican Brand Insect Fluid Label
- Circa 1910 – circa 1915
Printed bottle label for Mexican Brand Insect Fluid, depicting a woman using the product in a bedroom, with the tagline "What is Home without a Clean Bed."
- Subject Public health, DDT (Insecticide), Insecticides, Toxins
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Postcard and French postage stamp commemorating Louis Pasteur
- After 1885 – before 1953
Postcard image is a reproduction of Finnish painter Albert Edelfelt's famed portrait "Pasteur Dans Son Laboratoire" [Pasteur In His Laboratory]. The portrait depicts Pasteur in his laboratory at the rue d'Ulm,…
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Vacuum distillation apparatuses
- 1913
Two vacuum distillation apparatuses with various components, including distillation flasks, thermometers, heating baths, vacuum tubes, as well as stands and clamps.
Vacuum distillation is a method of distilling at…
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Apparatuses for determining osmotic pressure and freezing point depression
- 1913
B 2040. Differential tensimeter.
B 2041. Storage rack with circular section for tensimeter.
B 2052. Stirring device, mechanically operated by clockwork.
B 2057. Reading device for thermometer.
B 2060. Complete apparatus… -
Apparatuses for water collection and extraction
- 1913
B 4919. Water sampling apparatus, with bottles and tube for chemical, gas, and bacteriological analysis.
B 4921. For removing river or seawater.
B 4922. Flow-through water sampler suitable for all depths.
B 4923. Winch… -
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Microtomes
- 1913
Microtomes are used for cutting tissues into extremely thin sections, for preparation of samples in microscopy.
B 5255. Sledge microtome for anatomical and bacteriological work.
B 5261. Microtome with crank for all… -
R. Jung sledge microtomes
- 1913
Microtomes are used for cutting tissues into extremely thin sections, for preparation of samples in microscopy.
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R. Winkel Göttingen microscope
- 1913
Microscope with achromatic objectives and Huygens eyepieces. Assembled with the "No. 2b" stand, for medium microscopes with lighting unit.
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R. Winkel Göttingen microscope
- 1913
Microscope with achromatic objectives. Assembled with the "No. 1" stand, for large microscopes.
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Ernst Leitz Wetzlar microscopes
- 1913
Oil immersion microscopes with various components and of different sizes.
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Carl Zeiss Jena microscopes
- 1913
Two microscopes with choices of various components for complete assembly.
B 5095. Sufficient for most bacteriological, histological, botanical, and zoological investigations.
B 5099. For bacteriological work (equipment… -
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Franz Schmidt & Haensch polarimeters
- 1913
Polarimeters are used to measure the angle of rotation of a beam of light passing through an optically active substance.
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Instruments for measuring radioactivity
- 1913
B 2282. Electrometer for radioactive measurements.
B 2285. Fontactoscope, an electroscope for measuring the radioactivity of water and gases.
B 2300. Electrometer with internal amber insulation. -
Apparatuses for determining boiling point elevation and freezing point depression
- 1913
B 2106. Precision apparatus for determining freezing point depression.
B 2107. For determining freezing point depression for clinical purposes.
B 2108. For determining freezing point depression for very small… -
Equipment for water distillation and general laboratory work
- 1913
B 185. Combination water distillation unit with drying cabinet and sand bath for gas heating.
Also pictured are evaporating flask and dishes made of glass and metal.
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Respiration apparatus
- 1913
Portable universal respiration apparatus, according to specifications from Professor Francis Gano Benedict.
- Creator Of Work Vereinigte Fabriken für Laboratoriumsbedarf (Berlin)
- Subject Benedict, Francis Gano, 1870-1957, Chemical laboratories--Equipment and supplies, Scientific apparatus and instruments, Biological laboratories--Equipment and supplies, Artificial respiration--Equipment and supplies, Chemical apparatus
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Water distillation apparatuses
- 1913
B 181. Automatic, for gas heating, coal or wood firing.
B 183. Fully automatic, with copper interior and steam heating.- Creator Of Work Vereinigte Fabriken für Laboratoriumsbedarf (Berlin)
- Subject Distillation apparatus, Chemical laboratories--Equipment and supplies, Scientific apparatus and instruments, Biological laboratories--Equipment and supplies, Chemical apparatus, Water--Purification--Distillation process, Water
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Various potash bulbs
- 1910s – circa
Glass bulbs when filled with a potassium hydroxide solution are used for the absorption of carbon dioxide in chemical analysis. Types of potash bulbs depicted here include: Geissler's, Geissler-Wetzel's, Alvergnat's,…
- Creator Of Work Emil Greiner Company
- Subject Scientific apparatus and instruments, Chemical apparatus
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Lecture apparatus
- 1910s – circa
Image 5594: "Apparatus for the simultaneous electrolytical decomposition of water, hydrochloric acid and ammonia."
- Creator Of Work Emil Greiner Company
- Subject Scientific apparatus and instruments, Chemical apparatus
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Absorption apparatus
- 1910s – circa
Various apparatus and pipettes for absorption and determination of gases.
5273. For estimation of methane, with platinum spiral.
5274. For determination of oxygen by the exact method.
5280. Palladium Tube.
5282.…- Creator Of Work Emil Greiner Company
- Subject Scientific apparatus and instruments, Pipettes, Chemical apparatus
