For the benefit of the lay reader I will say that the blood-vessels represented in the cut are the arteries; there are also veins, nerves, and lymphatics imbedded in the folds of the peritoneum, accompanying and paralleling the arteries, but they are not shown in the cut.

The peritoneum is the lining membrane of the peritoneal cavity. It is well to remember that there is nothing in the peritoneal cavity except a little serum. The layman will say that the bowels are in this cavity, but they are not; they project into the cavity, and their outside covering is the lining membrane of the peritoneal cavity, but they are truly on the outside of the cavity, and to enable the layman to understand the anatomy so that he can apply it when reading of the disease, I shall describe the course of an ulcer: If an ulcer starts in the bowel it first eats through the mucous coat which is the lining membrane of the bowel then through the submucous coat, which is the second layer or coat of the bowel, then through the muscular coat, which is the third layer of the bowel; this brings the ulcer to the serous coat or peritoneum. When the peritoneum is eaten through it is called perforation, for it means that there is an opening into the peritoneal cavity, and, unless the cavity is cut into, cleaned and properly drained death will take place in a very short time. I say death is inevitable without surgical treatment. In this I appear to be more radical than the most radical, for the best authors have much to say about perforation, diffuse peritonitis, and of patients who live after perforation, as though it were a common occurrence; I say they are mistaken.

CHAPTER II

_History: _Appendicitis did not become popularly known until about twenty years ago—not till it was christened and baptized in the blood of the surgical art. Of course the appendix has always been subject to inflammation, just as it is now, but in former years the disease we call appendicitis bore various names, depending upon the diagnostic skill of the attending physician. Typhlitis and perityphlitis were the names used to designate the disease now covered by the word appendicitis.

The diseases that appendicitis may be confounded with and must be differentiated from are obstruction, renal colic, hepatic colic, gastritis, enteritis, salpingitis, peritonitis due to gastric or intestinal ulcer, enterolith, obstipation, invagination or intussusception, hernia, external or internal, volvulus, stricture and typhoid fever.

The old text-book description of typhlitis and perityphlitis is so similar to the description of the present day appendicitis that it is not necessary to reproduce it. The symptoms given show conclusively that they are really one and the same.

In the surgical treatment of appendicitis the American profession has taken the lead, and the mention of this disease brings to mind such names as McBurney, whose name is given to an anatomical point—McBurney's Point—midway between the right anterior superior spine of the ileum and the umbilicus, Deaver of Philadelphia, and Ochsner and Murphy of Chicago. Those who are interested in the surgical treatment of the disease can look into the methods of these men, and many others. The medical literature of the day abounds in exhaustive treatises on the subject of appendicitis and its surgical treatment.

We are living in an age that will not be properly recorded unless it be entered as The Age of Fads.

Following immediately on the announcement of Lord Lister's antiseptic surgical dressing which rendered the invasion of the peritoneal cavity comparatively safe, came the laparotomy or celiotomy mania. When it was discovered that opening the abdomen was really a minor operation, it was soon legitimatized by professional opinion, and rapidly became standardized as a necessary procedure in all questionable cases—in all obscure cases of abdominal disease—where the diagnosis was in doubt. The result of popularizing and legitimatizing the exploratory incision, was to cause those who failed to resort to it, in doubtful eases, to be in contempt of the court of higher medical opinion, and to license those of a reckless, selfish, savage nature to play with human life in a manner and with a freedom that would make a barbarian envious.

The wave of abdominal operations that swept the country in the last quarter of the nineteenth century was appalling. The slightest pain during menstruation, or in the lower abdomen, in fact every pain that a woman had from head to toes was put under arrest and forced to bear false witness against the ovaries. It was a very easy matter to trump up testimony, when real evidence was embarrassing, to foregone conclusions; hence pains in obscure and foreign parts took on great importance when analyzed by minds drilled in the science of nervous reflexes, sympathies and metastases.