[93] for they themselves have contributed but a small part of what was necessary for the cultivation of their lands, but the greater number and the most important of the means to render the land fertile and productive have been supplied by nature, such as seasonable rains, a proper temperature of the atmosphere, those nurses of the seeds sown and springing up—heavy and continual dews, vivifying breezes, the beneficial bestowal of the seasons of the year, so that the summer shall not scorch the crops nor the frost chill them, nor the revolutions of spring and autumn deteriorate or diminish what is produced.