Figure 8 is a histological image of figure 6, and the part of the section approximately accords. Figure 7 is a converted linear image from the quadratic differential of the pitch presented on the skin surface of figure 8. Figure 9 is a converted linear image from the quadratic differential of the pitch presented under the basal layer of figure 8. There is a possibility that Theta image of figure 6 corresponds to the quadratic differential of the pitch of the skin surface. But the existence of the other factors cannot be denied ( Eruption is regarded as composition of diffused reflection and Tyndall phenomenon on the horny layer and epidermis).