In regard to the first of these, it is safe to say that our answer is much less alarming than it was in the earlier stage of our knowledge. Naturally enough, in the beginning, only the severest and most unmistakable forms of the disease and those which showed no tendency to localization, were recognized, or at least came under the eye of the surgeon; and as a large percentage of these resulted fatally, the conclusion was reached, both in the medical profession and by the laity, that appendicitis was an exceedingly dangerous disease, with a high fatality in all cases. As, however, physicians became more expert in the recognition of the disease, it was discovered to be vastly more common, while side by side came the consoling knowledge that a considerable percentage of cases got well of themselves, in the sense of the inflammation being limited to the lower right-hand corner of the abdominal cavity, though, of course, with the possibility of leaving a smouldering fuse which might light up another explosion under any stress in future. Further, as the attention of the post-mortem investigators at our large hospitals was directed to the subject, it was found that a very considerable percentage of all bodies, ranging from twenty to--according to some estimates--as high as sixty per cent, showed changes in the appendix and its neighborhood which were believed to be due to old inflammations; so that, while it is possible to speak only with great caution and reserve, the balance of opinion among clinicians and pathologists of wide experience and the more conservative surgeons appears to be that from one-half to two-thirds of all cases of appendicitis will recover of themselves, in the sense of subsiding more or less permanently, without causing death. On the other hand, it must be remembered that the appendix is an organ which, so far as any evidence has been adduced, is entirely without useful function; that it is in process of shriveling and disappearance, if left entirely alone, and that the best result which can be expected from a self-cured attack of appendicitis is the destruction of the appendix and its elimination as a further possible cause of mischief. By avoiding an operation in appendicitis, we may be practically certain that we save nothing that is worth saving--except the fee. Moreover, even though only from one-fourth to one-third of all cases develop serious complications, you never can be quite sure in which division your particular case will fall.