Notes:1. Absonderungsorgane. The term Absonderung is applied in these lectures to the process whereby various organs take out a portion of the nutritive matter and hold this for use (=secretion) and at the same time reject the rest of the matter (=excretion), either discharging this portion out of the body or passing it on to be discharged. The important aspect of the process, from the point of view of these lectures, is that of separation, implying resistance, through which alone man can become conscious of himself. Hence the term excretion is used for Absonderung except where secretion is obviously required.