CASE VI.—_Death from Heart Clot in Debility._ A gentleman, 55 years old, who had been for some time in feeble health, was taken, upon rising in the morning, with oppression and distress in the region of the heart, dying in twelve hours. The heart clot was found here, as in the other cases, upon the right side of the heart. CASE VII.—_Heart Clot in Death from Over-dose of Morphia._ A gentleman, of about 50 years, a physician, was found one morning dead in his bed. His health had been previously good, excepting that he was troubled with neuralgia which gave him sleepless nights, and for which he sometimes took morphia. On the night previous to his death he came home and retired at a late hour. An open bottle of morphia and small spatula were found on his desk next morning, the spatula showing evidence of having been thrust deeply into the morphia, and probably a large and over-dose carelessly removed and taken. The autopsy here again revealed a large and firm fibrinous heart clot. CASE VIII.—_Death from Heart Clot in Acute Gastritis._ A lady of about 60 years, had an attack of acute gastritis, but was considered convalescing, and her physician (Dr. Martin) made his last visit in the evening. The next morning she was found dead in her bed. The post-mortem showed the spleen somewhat enlarged, and its capsule greatly thickened.[15] Other organs healthy, while the heart contained an unusually large fibrinous clot, which has been preserved in the College Museum.[16] The above include the more marked cases of death that have come under my notice, where that result could, in my mind, be fairly attributed to the formation of fibrinous clots in the heart. The following inferences may, we think, be fairly deduced from the several cases reported: _First._ In some instances the fibrinous clots are apparently the _sole cause_ of death. (Cases 1, 2, and 3.) _Second._ In other, and a larger number of diseases, as in acute rheumatism, pneumonia, croup, etc., which otherwise would recover, a fatal termination results from the formation of heart clots. (Cases 3 and 5.) _Third._ In still other diseases, which are of themselves necessarily fatal, as in phthisis, cholera, etc., death is often hastened by these formations. (Case 4.) Section VI. THE AORTA AND ARTERIES GENERALLY. [=Notice=: 1. _Before Opening Vessel_—size; course; condition of external coat and surrounding tissues. 2. _After Opening Vessel_—character of blood within; coagulated or not; size, color, consistence, etc., of clot; size of canal; thickness of walls; rigid or flexible. _Lining Membrane_—smoothness; transparency, etc.; readiness of detachment; thickness, etc.; if rough, the apparent cause; fibrinous, atheromatous or calcareous deposits. _Middle Coat_—its thickness; color; deposits within, and their character. _External Coat_—general condition.