_Care of Instruments_.--The endoscopist must either personally care for his instruments, or have an instrument nurse in his own employ, for if they are intrusted to the general operating room routine he will find that small parts will be lost; blades of forceps bent, broken, or rusted; tubes dinged; drainage canals choked with blood or secretions which have been coagulated by boiling, and electric attachments rendered unstable or unservicable, by boiling, etc. The tubes should be cleansed by forcing cold water through the drainage canals with the aspirating syringe, then dried by forcing pipe-cleaning worsted-covered wire through the light and drainage canals. Gauze on a sponge carrier is used to clean the main canal. Forceps stylets should be removed from their cannulae, and the cannulae cleansed with cold water, then dried and oiled with the pipe-cleaning material. The stylet should have any rough places smoothed with fine emery cloth and its blades carefully inspected; the parts are then oiled and reassembled. Nickle plating on the tubes is apt to peel and these scales have sharp, cutting edges which may injure the mucosa. All tubes, therefore, should be unplated. Rough places on the tubes should be smoothed with the finest emery cloth, or, better, on a buffing wheel. The dry cells in the battery should be renewed about every 4 months whether used or not. Lamps, light carriers, and cords, after cleansing, are wiped with 95 per cent alcohol, and the light-carriers with the lamps in place are kept in a continuous sterilization box containing formaldehyde pastilles. It is of the utmost importance that instruments be always put away in perfect order. Not only are cleaning and oiling imperative, but any needed repairs should be attended to at once. Otherwise it will be inevitable that when gotten out in an emergency they will fail. In general surgery, a spoon will serve for a retractor and good work can be done with makeshifts; but in endoscopy, especially in the small, delicate, natural passages of children, the handicap of a defective or insufficient armamentarium may make all the difference between a success and a fatal failure. A bronchoscopic clinic should at all times be in the same state of preparedness for emergency as is everywhere required of a fire-engine house.