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| #7170 | American 18th century thermometer | |
| SOLD | American thermometer, hand engraved silvered brass scale with Reaumur-mercury-thermometer, in french language.
Signed: Donagan & Co, Philadelphia. Donegan is mentioned in 'Early American Scientific Instruments and their Makers' by Silvio Bedini. http://www.gutenberg.org/files/39141/39141-h/39141-h.htm Information about French speaking in the Philadelphia area can be found here: http://philadelphiaencyclopedia.org/archive/french-revolution/ |
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