Bryan Valence Blocks

Bryan Valence Blocks

<< >>
Usage conditions apply
Downloads
Description
Arthur Herbert Bryan, a science department teacher at Baltimore City College, designed these Valence Blocks for use in chemistry classes. This set was made by the Porter Chemical Co. of Hagerstown, Md.
Ref: Arthur Herbert Bryan, “Valence Block for Illustrating Chemical Reactions,” U.S. Patent 2,140,103 (Dec. 13, 1938).
Arthur H. Bryan, “Valence Blocks Visualize High School Chemistry Fundamentals,” School Science and Mathematics (Nov. 1940): 758-760.
Location
Currently not on view
Object Name
Molecular Model Kit
maker
Porter Chemical Company
place made
United States: Maryland, Hagerstown
Associated Place
United States: New Jersey
Measurements
overall: 3 in x 8 1/2 in x 5 1/2 in; 7.62 cm x 21.59 cm x 13.97 cm
overall: 3 1/8 in x 8 1/2 in x 5 1/2 in; 7.9375 cm x 21.59 cm x 13.97 cm
ID Number
1994.0019.33
accession number
1994.0019
catalog number
1994.0019.33
See more items in
Medicine and Science: Chemistry
Data Source
National Museum of American History
Nominate this object for photography.   

Our collection database is a work in progress. We may update this record based on further research and review. Learn more about our approach to sharing our collection online.

If you would like to know how you can use content on this page, see the Smithsonian's Terms of Use. If you need to request an image for publication or other use, please visit Rights and Reproductions.

Comments

Add a comment about this object