The reference that prompts my question is from this passage regarding
Medieval trade in southern Europe:
"In the later period the compass, astrolabe, _martelojo_ and other
nautical inventions facilitated long-distance navigation, while the
French _pave' du Roi_ with its rectangular slabs and the Lombard
circular stones improved the surface of roads in muddy regions."
- _Cambridge Economic History of Europe_, Vol. 2, p. 362.
Thank you for any assistance.
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Randy K. Schwartz email rschwart@schoolcraft.cc.mi.us
Department of Mathematics voice 734/462-4400 extn. 5290
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Schoolcraft College
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USA
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