Zanaboni Theory and Saint-Venant's Principle: Updated

Zanaboni Theory is mathematically analyzed in this paper. The conclusion is that Zanaboni Theorem is invalid and  not a proof of  Saint-Venant's Principle;  Discrete Zanaboni Theorem and Zanaboni's energy decay are inconsistent with Saint-Venant's decay; the inconsistency, discussed here, between Zanaboni Theory   and Saint-Venant's Principle  provides more proofs that Saint-Venant's Principle is not generally true.