Geometric Model, L. Brill No. 75. Ser. 9 No. 6, Fourth Order Surface

Geometric Model, L. Brill No. 75. Ser. 9 No. 6, Fourth Order Surface

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The design of this plaster model follows one built Edward Kummer (1810-1893), a mathematics professor in Berlin. Examples were first published by Brill in 1883.
In its complete form, the model has four congruent parts which are arranged with tetrahedral symmetry. This example has only three of those parts and they are presently disjoint. The three pieces present each have the dimensions given. Identical curves are drawn on them. A paper tag reads: Fl. 4. Ord. mit 4 Doppelebenen. [/] Verl. v. L. Brill. 9. Ser. Nr. 6.
This example was exhibited at the Columbian Exposition, a world’s fair held in Chicago in 1893.
L. Brill, Catalog mathematischer Modelle..., Darmstadt: L. Brill, 1892, p. 19, 67
Fischer, Gerd, ed., Mathematical Models, vol. 1, Braunschweig / Wiesbaden: Vieweg, 1986, p. 47.
Fischer, Gerd, ed., Mathematical Models, vol. 2, Braunschweig / Wiesbaden: Vieweg, 1986, pp. `17-19.
Groeningen University website, accessed September 2, 2019.
Currently not on view
Object Name
geometric model
geometric model
date made
L. Brill
place made
Germany: Hesse, Darmstadt
Physical Description
plaster (overall material)
paper (overall material)
overall: 4.5 cm x 9 cm x 8.5 cm; 1 25/32 in x 3 17/32 in x 3 11/32 in
ID Number
catalog number
accession number
Credit Line
Gift of Wesleyan University
See more items in
Medicine and Science: Mathematics
Science & Mathematics
Data Source
National Museum of American History
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