I. General facts with regard to Infection, Infective, and Infectious diseases, (a) Local infection. (b) General toxic effects. (r) Infection of the blood. II. Susceptibility to infection. Immunity. (1) Natural Immunity. Phagocytosis; (2) Acquired Immunity; (3) Induced Immunity, Vaccination, Antitoxines, Serumtherapy; (4) Explanation of acquired and induced immunity; (5) Duration of induced and acquired immunity. III. Septic Infection. Definition. Mode of induction. Suppuration a feature of most septic infections. Purulent infiltration. Abscess. Septic infection of cutaneous and mucous surfaces. Septic infection in serous cavities. General symptoms resulting from septic infection. IV. Infective Tumours. Specific Inflammations. New-formations due to specific morbid poisons, which in most have been determined, i. Syphilis. - The primary lesion, or Hunterian chancre; affection of lymphatic glands. The secondary lesion, the virus in the blood. The tertiary lesion, gummata; amyloid disease; affection of arteries. Hereditary and congenital syphilis. II. Tuberculosis. - Causation, the bacillus; tuberculosis by inoculation; contagiousness; inheritance. Character of the lesion, the miliary tubercle; how produced; caseous necrosis; fibrous transformation; softening and ulceration. Local tuberculosis; mode of access of bacillus; extension of local process, by lymphatics and along surfaces; effects of local tuberculosis, emaciation, fever, etc. General tuberculosis, or acute miliary tuberculosis. Tuberculosis in animals. III. Leprosy; the bacillus; character of lesions in tubercular and anaesthetic forms. IV. Elephantiasis; causation from unknown morbid poison; character of lesion. v. Glanders; causation and character of lesion, vi. Actinomycosis; causation; character of lesion and locality, vii. Malignant Lymphoma or Hodgkin's disease; character of lesion, viii. Acute Specific Fevers. (1) Smallpox. (2) Scarlet fever. (3) Measles. (4) Typhus fever. (5) Yellow fever. (6) Rheumatic fever. (7) Whooping cough.