In 1851 Otto Funke was the first scientist to successfully crystallize hemoglobin ((German): "Hämoglobinkrystallen"), which he first called "Blutfarbstoffes". This work was a precursor to Felix Hoppe-Seyler's important studies of hemoglobin. Funke also performed research of blood formation in the spleen, and investigations into the effects of curare.
Selected publications
Lehrbuch der Physiologie (7. Aufl. von Grünhagen, Hamburg 1884)
Atlas der physiologischen Chemie (Leipzig 1853, 2. Aufl. 1858), Supplement to Carl Lehmann's Lehrbuch der physiologischen Chemie
Kapitel über den Tastsinn und die Gemeingefühle. In: Ludimar Hermann's Handbuch der Physiologie (Bd. 3, Leipzig 1880)
References
This article is based on a January 2008 translation of an article from the German Wikipedia.