| |
Announcement of an "Extraordinary Chemical and Optical Discovery" in the British newspaper Morning Herald (London). Saturday 12 January 1839
1839, 12 January
Newspaper article
Internet - Original source ill-defined
LL/121114
(Alan Griffiths, 5 July 2022) I'm indebted to Ira Stein for locating the details on this announcement.
| |
LuminousLint 
@LuminousLint