it was then that paula came on to the bit about borrallos wife , cecilia de stives , and how wonderful were this couple of self-taught peasant doctors who practised their techniques in a largely barter society and who were paid for their work not in money but in kind ; how cecilia worked patiently to restore the potency of a local farmer and received a big fat goose as a reward ; what a wonderful example of the symmetry of nature it was that the two dwarves that she had treated for infertility should pay her in free range eggs ; and how it restored ones faith in human nature that the borrallos had organised a sponsored goat riding marathon to help raise money for the treatment of the case they couldnt solve themselves , that of the little boy whose leg had been badly chewed during a school trip to the crocodile farm on the outskirts of orense .