There is no point in life when organisms can be said to stand still, for when growing stops decline begins. The tendency to disorder is never absent from organizations, and the organisms are no exception. Senescence begins at birth, but there is still some residue of growth in the outlook from age 76 and over, from which life can be seen steadily and as a whole. Not everyone of the same ripe age is senescent, for senescence is a state which an individual of a certain age may reach, and in which if he does then there is a full measure of it awaiting him. It has its own pattern and its own conditions.