Herman Francis Mark Quote

The concept of "free radicals" was not known in 1920 — well perhaps in politics, but not in chemistry.


From Small Organic Molecules to Large: A Century of Progress, Chemistry Study in Vienna (p. 15), American Chemical Society, Washington, D.C. 1993


The concept of free radicals was not known in 1920 — well perhaps in politics, but not in chemistry.

The concept of free radicals was not known in 1920 — well perhaps in politics, but not in chemistry.

The concept of free radicals was not known in 1920 — well perhaps in politics, but not in chemistry.

The concept of free radicals was not known in 1920 — well perhaps in politics, but not in chemistry.