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86 out when a torrent or some other force of Nature has laid open a vena dilatata in a valley, so that it appears either on the slope of a mountain or hill or on a plain. Elsewhere the Bergmeister doubles the width of the head-meer and it is made fourteen fathoms wide, while the width of each of the other meers remains single, that is seven fathoms, but the length is not defined by boundaries. In some places the head-meer consists of three double measures, but has a width of fourteen fathoms and a length of twenty-one.



In the same way, every other meer is composed of two measures, doubled in the same fashion, so that it is fourteen fathoms in width and of the same length.