This is William Perkin, one of many old-time scientists who had a beard.
He lived from 1838 to 1907 and is perhaps best-known for discovering the dye mauveine.
He patented the discovery and, because purple was a colour in demand, Perkin became rich.
In our latest periodic video about crystallization, we discuss Perkin's beard.
The Professor suggests that substantial beard may have been a secret weapon in Perkin's success as a chemist!
Find out why...