The blood was pale, thin and watery, especially in protracted cases, formed a loose coagulum, or remained fluid with a grayish red color. There was marked leucocytosis (1:4 or 5).
The stomach and intestines were more or less icteric, and contained little ingesta.
The liver was congested, softened, shrunken in protracted cases, colored of a deep yellow especially in the interior, and with gorged biliary radicles so that the acini stood out very prominently. The gall bladder was usually well filled with a thick, flocculent bile, yellowish green, blackish green or chocolate color.
The spleen appeared shrunken, somewhat spherical, 2 to 3 ozs., firm, and with a dark, reddish brown pulp.
The kidneys were greatly enlarged, weighing 12 to 16 ozs., dark red or bluish black, friable, and on section exuding freely a bloody or chocolate-colored liquid. The capsule was easily detached. The bladder contained a bloody or chocolate-colored urine, but was sometimes empty.
The heart cavities were empty or contained small diffluent blood clots. Petechiæ were common on pericardium and endocardium.
Yellowish or yellowish green gelatinoid effusion was often present, not only on the head and neck, but also on the inner side of the thighs, and in one or other of the serous cavities.
Symptoms. The first indications noticed are dulness, listlessness, a dragging behind the flock, ceasing to graze, arched back, and stiff or unsteady movements. There is moderate fever, yellowness of the visible mucosæ and skin, and rosy, bloody, or reddish brown urine.
Puffy dropsical swellings are noticed, especially on the ears, sides of the face, on the neck or thighs, and the patient lies down most of the time.
The patient usually dies in a state of collapse which has lasted for several hours, yet in certain cases it is preceded by a convulsive agony.