With her hind-legs she holds the white pill bulging with germs lifted above the entrance; gently she turns and turns it, so as to present every side to the life-giving rays.

And this goes on for half the day, so long as the temperature is high; and it is repeated daily, with exquisite patience, during three or four weeks.

To hatch its eggs, the bird covers them with the quilt of its breast; it strains them to the furnace of its heart.

The Lycosa turns hers in front of the hearth of hearths: she gives them the sun as an incubator.
In the early days of September the young ones, who have been some time hatched, are ready to come out.
The whole family emerges from the bag straightway.

Then and there, the youngsters climb to the mother's back.