File:Stephen Hale - pneumatic trough.jpg
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Summary
| Description | English natural philosopher Stephen Hales' pneumatic trough. A similar device was used by Joseph Priestley for the production of novel "airs", and for performing the "nitrous air test". |
| Date | |
| Source | Hale's 1727 work, as reproduced in: Joseph S. Fruton, Methods and Styles in the Development of Chemistry, Philadelphia: American Philosophical Society, 2002, p. 20. |
| Author | Stephen Hales |
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This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or fewer.  You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 20:52, 19 September 2007 | | 856 × 985 (201 KB) | wikimediacommons>Ragesoss | {{Information |Description= English natural philosopher Stephen Hale's pneumatic trough. A similar device was used by Joseph Priestley for the production of novel "airs", and for performing the "nitrous air test". |Source= Hale's 1727 work, as reproduced |
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