VI. Diphtheria and Influenza—Crossed Eyes

This is also connected with a factor that affects people's offspring. Take a mother or father whose skin is too sluggish and doesn't slough off easily enough. This is most difficult to determine and takes a very sensitive insight into human peculiarities. The average layman cannot easily judge whether or not a person has callous skin, but some people do possess a much tougher skin than others. This is difficult to determine, because the skin is actually transparent. As it sloughs off, it appears to be colored differently because of what is underneath. Our skin is really transparent. If the father has a skin that is much tougher than it should be, the activity of the bones is also influenced thereby. As you know from what I have recently explained, the production of the blood depends on the activity of the bones. If the father has such callous skin that it reminds you of hippopotamus hide, he will produce white corpuscles that are too weak. This, in turn, influences his sperm, and his children will be weak from the beginning. So, one can say that if the father is a “hippopotamus,” it is possible for his children to be born with rickets—an English illness—for the children to be born weak and to be susceptible to tuberculosis. This is how these things are related.