George Henry Lewes was an English philosopher and critic of literature and theatre. He was also an amateur physiologist. He became part of the mid-Victorian ferment of ideas which encouraged discussion of Darwinism, positivism, and religious skepticism. source
Dad was a chemistry professor at Saint Olaf College in Minnesota, then Oxford College in Minnesota, and a very active member of the American Chemical Society education committee, where he sat on the committee with Linus Pauling, who had authored a very phenomenally important textbook of chemistry.