To return to the question of what observation is for:—It would really seem as if some had considered it as its own end, as if detection, not cure, was their business; nay more, in a recent celebrated trial, three medical men, according to their own account, suspected poison, prescribed for dysentery, and left the patient to the poisoner. This is an extreme case. But in a small way, the same manner of acting falls under the cognizance of us all. How often the attendants of a case have stated that they knew perfectly well that the patient could not get well in such an air, in such a room, or under such circumstances, yet have gone on dosing him with medicine, and making no effort to remove the poison from him, or him from the poison which they knew was killing him; nay, more, have sometimes not so much as mentioned their conviction in the right quarter—that is, to the only person who could act in the matter.