As he ascertained, in re-reading Dr. Vernois's report on "The Application of Photography to Medical Jurisprudence," the savant himself, even while denying the results of which Dr. Bourion spoke in his communication, devoted himself to the general consideration upon the rôle which photography ought to play in medical jurisprudence. Yes, in 1869, he asked that in the researches on poisonous substances, where the microscope alone had been used, photography should be applied. He advocated what in our day is so common, the photographing of the features of criminals, their deformities, their scars, their tattooings. He demanded that pictures should be taken of an accused person in many ways, without wigs and with them, with and without beards, in diverse costumes. "These propositions," thought Bernardet, "seem hardly new; it is twenty-six years since they were discovered, and now they seem as natural as that two and two make four. In twenty-six years from now, who knows what science will have done? "Vernois demanded that wounds be reproduced, their size, the instruments with which the crime was committed, the leaves of plants in certain cases of poisoning, the shape of the victim's garments, the prints of their hands and feet, the interior view of their rooms, the signature of certain accused affected with nervous disorders, parts of bodies and of bones, and, in fact, everything in any way connected with the crime. It was said that he asked too much. Did he expect judges to make photographs? To-day, everything that Vernois demanded in 1869, has been done, and, in truth, the instantaneous photograph has almost superseded the minutes of an investigation. "We photograph a spurious bank note. It is magnified, and, by the absence of a tiny dot the proof of the alteration is found. On account of the lack of a dot the forger is detected. The savant, Helmholtz, was the discoverer of this method of detecting these faults. Two bank notes, one authentic, the other a forgery, were placed side by side in a stereoscope of strong magnifying power, when the faults were at once detected. Helmholtz's experiment probably seemed fantastic to the forger condemned by a stereoscope. Oh, well, to-day ought not a like experiment on the retina of a dead man's eye give a like result? "Instruments have been highly perfected since the time when Dr. Bourion made his experiments, and if the law of human physiology has not changed the seekers of invisible causes must have rapidly advanced in their mysterious pursuits. Who knows whether, at the instant of the last agony, that the dying person does not put all the intensity of life into the retina, giving a hundredfold power to that last supreme look?"