The wind blows over it, and raises up a provision of subtle miasma, imperceptible to the smell, and yet destructive to life.

If all these plains were ploughed or dug up three or four times, so as to let the air and light penetrate into the depths of the soil, the fever which lies dormant under the rank vegetation would speedily evaporate, and return no more.

Hasten then to bring ploughs, and your first crop will be one of health." A third replies to the two first, "You are both right.

The country is unhealthy because it is uncultivated, and uncultivated because it is unhealthy.

The question lies in a vicious circle, from which there is no escape.