The iconic Phrenologist's head. Phrenology was a Victorian pseudo-science which studied the relationship between a person's character and the bumps on their skull. Lorenzo Niles Fowler (1811-1887) was the famous American phrenologist. Before Fowler set up his own premises at 107, Fleet Street, London in 1863, he used the address of his publisher, William Tweedie, at No. 337, Strand as a centre for his business.
Please don't confuse this genuine antique bust with the numerous reproductions on the market. This is an early example which pre-dates 1863.