And so we arrive back in Montmor's library on the night of 19 December 1667. To the pleasure of some, and the extreme consternation of others, the two physicians, Denis and Emmerey, announced that as far as they could see, Mauroy, their prospective patient, was stable and in good basic health. He was a perfect candidate for their revolutionary therapy. Yes, he would be the next patient to receive some transfused blood. To avoid any possible deterioration, the operation should be carried out at the earliest possible time. This, they stated, was a trial of an idea. They weren't about to look too confident in claiming any sense of certainty that the procedure would cure the poor man's condition, though they certainly hoped to perform a wonder. Looking cautious and then claiming stunning success in a few days' time was definitely their preferred course of action.
Their hesitation was justified on practical grounds. They had never performed the operation on a man who was physically well, but had deranged behaviour. Their best guess was that they should use blood from a calf as'its mildness and strengths might possibly allay the heat and ebullition of his blood'. A time was set for the operation — 6 o'clock that evening — and with much fuss and elaborate bowing the assembly dissipated.
Soon the room was empty save for the two scientists, their host and patron Montmor, and the unfortunate Mauroy. His continued presence was less than voluntary as he was still tied to his chair, and he had once again started to complain bitterly. As usual, Montmor was in charge. He summoned a troupe of servants and began to make arrangements to have the'patient' transferred to another house, as the thought of listening to his shouting for the rest of the day was too much to be contemplated. Besides, his residence was in a fashionable part of Paris, and