Editing 1804 in science (section)

==Chemistry==
* June 21 – [[Smithson Tennant]] announces the discovery of the elements [[iridium]] and [[osmium]]; three days later, [[William Hyde Wollaston]] reveals to the Royal Society that he is the formerly anonymous discoverer of [[palladium]].<ref>{{cite journal|title=The Eighth Group of the Periodic System and Some of its Problems|first=James Lewis|last=Howe|journal=The Chemical News and Journal of Physical Science|date=1900-07-20|page=31}}</ref>
* German pharmacist [[Friedrich Sertürner]] first isolates [[morphine]] from [[opium]],<ref>Serturner, F. W. A. (1806) ''J. Pharm. f. Arzte. Apoth. Chem''. '''14''' 47–93.</ref><ref>{{cite web|first=Klaus|last=Meyer|year=2004 |title=Dem Morphin auf der Spur|language=German|url=http://www.pharmazeutische-zeitung.de/index.php?id=26551|accessdate=2012-06-12|work=Pharmazeutischen Zeitung|publisher=GOVI-Verlag}}</ref> probably the first ever isolation of a natural plant [[alkaloid]].