The presence of such a body in this position, and with such attachments, it was evident, must have so interfered with the passage of the blood from the auricle to the ventricle, as, upon the contraction of the former cavity, to have caused a backward pressure into the veins, and thus have produced the _first_ of the double pulsations of the jugulars. Again, the position of this clot, preventing the closure of the valves upon the contraction of the ventricle, there would have been a regurgitation into the auricle, and the same backward flow into the veins, thus producing the _second_ pulsation of the jugulars seen during life. CASE II.—_Death from Heart Clot in Pregnancy._ A lady, 28 or 30 years old, also very anæmic, and three months pregnant, had been suffering occasional fainting spells. For some days before her decease she had suffered from dyspnœa, and on that day, after ascending a flight of stairs, fell upon the floor, and before a physician could be obtained breathed her last. A post-mortem showed all the thoracic and abdominal viscera in a healthy condition, while the right side of the heart contained a large fibrinous clot, with attachments similar to those found in Case I. CASE III.—_Death from Heart Clot in Diphtheria._ A boy, 3 years old, had an attack of diphtheria. The case presented no unfavorable symptoms until about the fourth day, when he was taken with great restlessness and oppression in breathing, and while sitting on the chamber at stool, suddenly died. The autopsy here again revealed the heart clot, as in the other cases. CASE IV.—_Death from Heart Clot in Consumption._ A man, 30 years of age, a furrier by trade, was suffering from tubercular disease of the lungs. He had never given up his work, though he was much reduced in flesh, had a bad cough, diarrhœa, and night sweats. While at his employment, he was one day taken with great oppression, increased cough, etc., and in twenty-four hours expired. The post-mortem showed that, while the upper portion of both lungs contained large deposits of tubercles, there were no abscesses, and the lower portions presented sufficient sound lung tissue to have maintained life. Upon opening the heart the usual fibrinous clot was found in the right ventricle, extending upwards into the auricle. CASE V.—_Death from Heart Clot in Rheumatism._ A strong colored man, of 25 years, had an attack of inflammatory rheumatism. The disease presented the usual characters, the inflammation wandering from joint to joint. During the second week he was suddenly attacked with great difficulty in breathing, violent and irregular action of the heart, and great distress, followed by rapid prostration and death. The post-mortem examination revealed thickened tricuspid valves, with a firm clot of large size adhering to the same.