The things that Paul had learned about! He had read Huxley and Spencer, and he talked about Galton and Weissmann and Lodge and Lankester, and a lot of names Bunny had never even heard of. Poor Bunny’s pitiful little high school knowledge shrank up to nothing; and how silly seemed football victories all of a sudden. Dad didn’t know about these matters either; he was a man well into his fifties, but he had never met a student of science before! It was interesting to see how quickly he took hold of these things. Paul told how investigators were trying to find out whether acquired characteristics could be transmitted by heredity; it was a most important question, and Weissmann had cut off the tails of mice, to see if the next generations would have tails. But Paul said that was silly, because
