When the attack is violent, the process is rapid; when mild, it is slow; and even in the collapse stage progresses tardily. In either case it is the direct resulting consequent of the primary cause. How else can the violent attacks, suddenly terminating in death, be accounted for? To what other principle can this altered condition and stagnation of the blood be attributed? The evidence confirmatory of this position is abundant and conclusive. Many instances of the apparently rapid action of the cholera poison are related by Dr. Milroy, in a historical sketch of the epidemic of 1817; and at Kurrachee in 1855 and 6, it is said, that within little more than five minutes, hale and hearty men are seized, cramped, collapsed, and dead!! When the disease broke out at Teheran, in May, 1846, Dr. Milroy states that those who were attacked dropped suddenly down in a state of lethargy, and at the end of two or three hours expired, without any convulsions or vomitings, but from a complete stagnation of the blood. In the paper before us, it is stated, that "in a great majority of cases in which death has occurred during the stage of collapse, the right side of the heart and the pulmonary arteries are filled, and sometimes distended with blood; the auricle being partially, and the ventricle completely and firmly contracted. The tissue of the lungs is, in most cases, of pale color, dense in texture, and contains less than the usual amount of blood and air. There is something surprising in the contrast between the almost constant occurrence of this extremely anæmic condition of the lung, from which scarcely even a few drops of blood flow when the tissue is cut, and the hyperæmia of most of the other viscera." This impeded flow of the blood through the lungs, resulting, as it must, in a very scanty supply of blood to the arteries, in connection with the corresponding fact of the increased expansion of the veins, filled with black, and thick, and stagnant blood which, by the action of a powerful poison, or malignant disease, has become disorganized and unfitted for circulation, furnishes indubitable evidence of one prominent and characteristic feature of cholera which we term congestion, and to which we alluded in our remarks when the question under consideration was first introduced; in this view we are happy to find ourselves, on a more thorough examination of the subject, ably sustained by eminent pathologists and authors, who have arisen during the half century last past, and whose works are said to embrace all that is known and reliable on the character and treatment of Epidemic Cholera.