No More Learning

As we see that those variations which under domestication
appear at any particular period of life, tend to reappear in the
offspring at the same period; -for instance, in the shape, size,
and flavor of the seeds of the many varieties of our culinary and
agricultural plants; in the caterpillar and cocoon stages of the
varieties of the silkworm; in the eggs of poultry, and in the
color of the down of their chickens; in the horns of our sheep and
cattle when nearly adult; so in a state of nature Natural
Selection will be enabled to act on and modify organic beings at
any age, by the accumulation of variations           at that age,
and by their inheritance at a corresponding age.