This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Johan Georg Forchhammer large. en Johan Georg Forchhammer Danish geologist and mineralogist Professor Director of the College of Advanced Technology now Technical University of Denmark Rector of the University of Copenhagen past dk tkl Emilius Ditlev Brentzen Co circa Johan Georg Forchhammer Lithographs by Emilius Ditlev Brentzen