Letter 53

CassiodorusApronianus, of Private Estates|c. 522 AD|cassiodorus
From: Theoderic (through Cassiodorus), King of the Ostrogoths
To: Apronianus, Count of the Private Estates
Date: ~522 AD
Context: Theoderic reports that a water diviner has arrived in Rome from North Africa and orders that he be supported, with a fascinating digression on the ancient art of finding underground water.

Your greatness's report has informed us that a water diviner has come to Rome from the regions of Africa, where this art is always cultivated with great zeal because of the dryness of the land. He is one who can provide water to arid places, making habitable through his skill areas desiccated by extreme barrenness. Know that this pleases us greatly, since the ancient skill described in the books of our predecessors has come in our times to be tested.

By the signs of green plants and the height of trees, he skillfully deduces the proximity of underground water. For lands where sweet moisture lies not far below, a luxuriance of certain plants always smiles -- the aquatic rush, the light reed, the sturdy bramble, the flourishing willow, the green poplar, and other kinds of trees that grow with a blessed height beyond their usual nature.

There are other indications of this art as well. When night falls, dry wool is placed upon ground already surveyed and covered with a crude clay pot. If water is near, the wool is found damp in the morning. When the sun has risen, the masters carefully observe the site, and where they see a cloud of the tiniest flies hovering above the ground, they confidently promise that the longed-for water will be found. They also say that a certain very fine smoke can be seen rising like a column, and however high it extends, that is how deep the water lies below -- making it remarkable that through these and other diverse signs, the exact depth at which the water will be found is predicted. They even predict the taste of the water, so that neither bitter water is sought at fruitless expense nor sweet, essential water scorned and neglected.

This science was beautifully passed down by its practitioners -- among the Greeks by one authority, among the Latins by Marcellus -- who treated not only underground streams but also the very mouths of springs with careful attention. They say that waters springing toward the east and south are sweet, clear, and healthiest for their lightness, while any that flow toward the north and west prove extremely cold but unwholesome due to the heaviness of their density.

Therefore, if your wisdom determines that the said man possesses both bookish learning and practical experience in these matters, support his journey and need with appropriate rations from the public treasury. He shall receive his pay when he has delivered the gifts of his art. For although the city of Rome abounds in flowing waters and rejoices in its springs and is richest in the flood of its aqueducts, there are nevertheless many suburban areas that appear to need this expertise. A man who proves useful even in part deserves to be retained. He should also be paired with a mechanic [hydraulic engineer], so that the waters he discovers can be raised by the other man's art, making climb by skill what nature cannot lift on its own. Let this man therefore be maintained among the masters of the other arts, so that nothing desirable may be said to have been lacking from the city of Rome under our rule.

Modern English rendering for readability. See the 19th-century translation or original Latin/Greek for scholarly use.

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