To saturated boric-acid solution Oj, add green soap to make a good suds. Boil half an hour. To this add iodoform ℥j, then boil 15 minutes. When cool add carbolic acid (95 per cent.) ʒj, stir solution, dip gauze, and roll in strips. Keep in sterile glass jars. Castile soap is a good substitute for green soap. IODOFORM EMULSION. I. Nine parts sterile glycerin in 1 part of iodoform. Dissolve powder for eight hours in bichlorid solution (1: 500). Pour off solution and break up the iodoform after having rinsed it thoroughly in sterile water. Then mix with glycerin. II. Iodoform, ℥j; sterile glycerin, ℥ix. Put the iodoform in a sterile basin. With a sterile spoon stir in glycerin, a few drops at a time, until a smooth paste has been made. Then add remainder of glycerin. TO PREPARE PROTECTIVE STRIPS. Scrub with green soap and rinse well in sterile water. Cut into strips. Disinfect in bichlorid (1: 500) for twenty-four hours. Keep in sterile water three hours. Then place in boric-acid solution. Put in normal salt solution when preparing for immediate use. TO PREPARE TINCTURE OF GREEN SOAP. Green soap, 3 parts; Alcohol, 95 per cent., 2 “ ; Ether, 1 part. To prepare by cold process: Mix ingredients in a pitcher and stir briskly for a few minutes every hour until a solution is formed. To prepare by warm process: Melt the soap over a slow fire; then remove it to a cool place and stir occasionally. Before it hardens add solutions and mix thoroughly. Caution: Prepare where there is no danger of the ether igniting. STERILIZING HAND-BRUSHES. 1. Clean with green soap and water; rinse thoroughly. 2. Place in saturated oxalic solution for 30 minutes. 3. Place in sterile water 30 minutes. 4. Change water twice. 5. Keep dry. TO PREPARE A PATIENT FOR A SURGICAL OPERATION. The preliminary preparations are of the _greatest importance_. The usual standing orders should be followed only when no directions have been given by the surgeon. When express directions for preparation are given by the surgeon, the usual standing orders must be disregarded. Caution in the use of cathartics can not be too strongly emphasized, for even a simple laxative at such a time may cost the patient’s life. The usual standing orders are: For the previous day, liquid diet only. Give a cathartic, a bath, and a hair-wash during the afternoon, and flush the bowels thoroughly a few hours later. Surgical preparations should be completed before retiring time for the night. Have room and all preparations ready before disturbing patient. Keep patient covered as much as possible. Protect table with a Kelly pad or a good substitute for same. Have at hand a drainage-pan and a bucket. Shave field of operation. Scrub with tincture of green soap and rinse with sterile water; then cleanse with ether, followed by alcohol, 70 per cent. Put on dry sterile dressing (a towel), apply a suitable bandage and fasten securely.