From Wikipedia
Maurice Cass (1884–1954) was a character actor in numerous
films and television shows. Born in Lithuania, he came to the US to pursue an
acting career.
His slight build, frizzy hair and pince-nez glasses cast him
as the "absent minded professor" or eccentric scientist type in many
of his films, such as the character who discovers the element kryptonite in
Adventures of Superman.
He is best remembered for his role as Professor Newton in
the 1954 TV science fiction show Rocky Jones, Space Ranger.