Microscope
date: label: date made
content: 1855-1860
name: label: maker
content: J & W Grunow
notes: label: Description
content: This is a “best student’s microscope” made by Julius and William Grunow, brothers from Prussia who arrived in New York in 1849, and lived in New Haven from 1854 to 1860. It is a compound monocular with coarse and fine focus, square stage, trunnion, sub-stage apparatus, sub-stage mirror, tri-leg base of japanned cast iron, and wooden box with extra lenses. The inscription reads “J. & W. Grunow New Haven, CT 207.” New it cost $75.
label: Description
content: One notable feature is a lever arm that moves the stage smoothly from right to left, and forward and back. This arm, coming up from the stage, is of the form introduced by Alfred White in London in 1844; in the form introduced by Cornelius Varley, also of London and also in 1844, the lever hung below.
label: Description
content: This microscope may once have belonged to George Frederick Barker (1835-1910), a scientist who graduated from the Sheffield Scientific School at Yale in 1858, and taught chemistry at Yale in the mid-1860s. Barker later taught at the University of Pennsylvania, and was an active member of the National Academy of Sciences, the American Philosophical Society, and other organizations.
label: Description
content: Ref: J. & W. Grunow, <i>Catalogue of Achromatic Microscopes, &c.</i> (New Haven, 1854), p. 4.
label: Description
content: Alfred White, “On a Lever Movement to the Stage of the Microscope,”<i> Transactions of the Microscopical Society of London</i> 1 (1844): 165-166.
label: Description
content: D. J. Warner, “Julius & William Grunow,” <i>Rittenhouse</i> 3 (1989): 41-48.
label: Description
content: Elihu Thomson, “George Frederick Barker, M.D., Sc.D., LL.D.,” Proceedings of the American Philosophical Society 50 (1911): xiii-xxix.
label: Location
content: Currently not on view
place: label: place made
content: United States: Connecticut, New Haven
label: associated place
content: United States: Maryland, Silver Spring
topic: label: Subject
content: Science & Scientific Instruments
setName: label: See more items in
content: Medicine and Science: Medicine
label: See more items in
content: Microscopes
label: See more items in
content: Science & Mathematics
creditLine: label: Credit Line
content: Mrs. Russell Munroe
dataSource: label: Data Source
content: National Museum of American History
identifier: label: ID Number
content: MG.M-09790.01
label: accession number
content: 212171
label: catalog number
content: M-09790
label: catalog number
content: 212171.01
objectType: label: Object Name
content: microscope
physicalDescription: label: Physical Description
content: brass (microscope material)
label: Physical Description
content: iron (microscope material)
label: Physical Description
content: glass (microscope material)
label: Physical Description
content: black (microscope color)
label: Physical Description
content: wood (case material)
label: Physical Description
content: metal (case material)
label: Measurements
content: case: 50.6 cm x 21.3 cm x 23.3 cm; 19 15/16 in x 8 3/8 in x 9 3/16 in
label: Measurements
content: microscope: 38.9 cm x 15.2 cm x 17.6 cm; 15 5/16 in x 6 in x 6 15/16 in