In the eighth section of “The Belfast Address” the physicist, Professor John Tyndall, wrote: “But there is in the true man of science a desire stronger than the wish to have his beliefs upheld—namely, the desire to have them true. And this stronger wish causes him to reject the most plausible support if he has reason to suspect that it is vitiated by error.” That is the writer’s position to-day. Six years ago he stated publicly that, in the secretion of that important digestive gland, the pancreas, Nature had furnished a potent means of coping with cancer. Even though there had been no other successes at the hands of Captain Lambelle, R.A.M.C., or of others, the successful issue of the case of the York ex-drummer, described in Chapter VIII., demonstrates for all time the scientific truth of the foregoing conclusion. The army surgeon who treated the patient, and the writer of these lines, both invite the fullest investigation of this case. The tumour was recurrent immediately after two operations upon it, and it had become inoperable. The diagnosis was confirmed by microscopical examination of a portion of the tumour-mass removed at the second operation by a pathologist of the Royal Army Medical College. A section which he made is in the writer’s possession, and from an examination of it he is able to say that the diagnosis given is not open to the slightest question. The patient is alive and well, free from recurrence, and his address is written across the copy of the ten charts of the case, all certified and signed by the surgeon, and which, like the photographic negatives, copies of the official documents, and all other particulars, I owe to my friend, Captain F. W. Lambelle, M.D., R.A.M.C., now stationed in Central India. All the evidences are open to the most searching investigation, and this in the interests of scientific truth as well as in those of humanity, is invited.