Barb, I do not know if Hahnemann used any raw substance for provings, but all were low potencies, Argentum being as low as a 1c triturate.

As for the Cham situation, I agree with Lisa's analysis and suggestion 100%. The most rational way to proceed.

Also I think there is a lot to be said for the idea that national/regional diet affects the locals en masse - in addition I would say the water quality and composition has an influence as well.