Recurrence of cancer is far more common during the first year after operation than in any other single year, but, as we shall see shortly, there is no time limit when the disease may not manifest itself anew. It is understood, of course, that recurrence depends also largely on the previous duration, extent, and malignancy of the tumor, and exact statistics are very few and imperfect in regard to these matters. It is well known that not long ago three years was considered as the time at which, if there had been no recurrence, the cancer could be considered as cured, and very many statistics have been based on this period. But with further experience and closer observation, and with more diligent following up cases, it was found that recurrences did take place more or less frequently at subsequent periods, and now the time limit has been arbitrarily extended to five years. This is because the very large proportion of recurrences are in the first year, varying for different locations and conditions from as high as 50 to 80 per cent in different statistics. But as the patients who have lived out the five-year limit are followed up more carefully, it is found that recurrences do happen all along the following years, so that they are recorded as occurring 6, 8, 9, 20, and 25 years after operation; I have met with many after 3 or 5 years, and even as late as 15 years after operation. The vast majority of cases, however, are not thus accurately followed out, much less reported, and thus far we have few data on which to make accurate statements as to the actual permanent cure of cancer by the knife. Recurrent cancer, as one constantly observes it, is most deplorable, and many who have had much to do with these cases realize that the distress is often far greater than in other cases in which the disease has run a natural course, without operation and under good medical guidance. The pain attending growths in scar tissue is generally intense and commonly requires anodynes continually and increasingly; these in turn, by disturbing digestion and locking up the secretions, seem to augment the disease. Even with these patients, however, very much may be done to relieve their suffering by proper dietary and medicinal means, with suitable local medication, as I have constantly seen, so that opiates need be but little used.