CHAPTER X

RAPID AND TEMPORARY IMMUNITY AGAINST MICRO-ORGANISMS, CONFERRED BY SPECIFIC AND NORMAL SERUMS, OR BY OTHER SUBSTANCES, OR BY MICRO-ORGANISMS OTHER THAN THOSE AGAINST WHICH IT IS DESIRED TO PROTECT AN ANIMAL 300 Immunity conferred by specific serums.—Analogy of the mechanism of this immunity with that observed in immunity obtained with pathogenic micro-organisms and their products.—Part played by phagocytosis in the immunity conferred by specific serums.—Influence of opium on the course of immunisation by these serums.—Stimulant action of specific serums.—Protective and stimulant action of normal serums.—Influence of fluids, other than serums: broth, urine, physiological saline solution, etc. Antagonism between anthrax and certain bacteria.