The best place for vaccination is on the upper arm over the region of, or just above, the insertion of the del toid The outer side of the thigh or the calf of the log may be used, but on account of the swelling of the inguinal glands and the disability caused, the leg should rarely be used.

The skin of the part selected should be thoroughly cleansed, but no antiseptic used, except alcohol, and then the vaccination should not take place until the part is thoroughly dry. Next scarify a small area of five millimeters (1/4 inch) square. If the vaccine-coated ivory is used, its point may serve as a scarifier, or as well a small scalpel or lance. The scarifications are made about a millimeter apart and at right angles to each other in a sort of basket design, and in no case should be deep enough to draw blood. Into this scarified area is now gently rubbed the vaccine from the slightly water-moistened tip of the dry ivory-point, or the liquid vaccine ejected from the capillary tube upon the scarified area is rubbed in with the flat of the scarifier. In a few minutes the moistened surface has dried. If it is slow to dry, gentle fanning, not blowing upon it with the breath, may aid the evaporation. The vaccinated part may then be temporarily protected by a shield so constructed that it permits of free ventilation.

After a few days, as soon as inflammation has developed, the shield had host be removed and the part protected by a simple linen binder, as a handkerchief.

If there is much exudate cover with linen or gauze moistened with some bland oil, and change the dressing several times a day. The final scab should, if possible, not be detached until it falls of itself.