Peritoneum
one of the most difone being inside, the other outside a teacher to explain intelligibly to his pupils, and the last that the student is able thoroughly to understand. From birth till death, the bowels are constantly moving and gliding over each other, in a worm-like perpetual motion, called peristaltic motion. It will be self-evident that this day and night friction of such delicate textures as those composing the integuments would, in the 70 years of man's life, wear out, or at least in time most seriously injure them. To prevent this friction, nature has provided the peritoneum, an immense shut-bag. The inside that portion out of sight-presents, when cut open, a smooth, glairy surface, studded with innumerable vessels, always pouring out a thin, in, smooth of peritoneum accompanies it, so that is always the two glairy sides rubbing betwee against each other, and allowing the intestines to glide about without let or hindrance, the bowels being always or between the bowel above or below there ing over the two inner sides. The peri the outside of the bag, but always glid and invests every organ in the abdominal toneum is a serous membrane, and, in the same way as it covers the bowels, lines and pelvic cavities. peritoneum; it is exceedingly painful and dangerous, from its extent and connection with important organs. Peritonitis may exist either as an acute or chronie