The same varieties of the cabbage do not yield abundant and nutritious foliage and a copious supply of oil-bearing seeds.

When the seeds in our fruits become atrophied, the fruit itself gains largely in size and quality.

In our poultry, a large tuft of feathers on the head is generally accompanied by a diminished comb, and a large beard by diminished wattles.

With species in a state of nature it can hardly be maintained that the law is of universal application; but many good observers, more especially botanists, believe in its truth.