Hence, from the autopsy of those who have fallen victims to its baneful influence in the first stage, or within forty-eight hours of the attack, no alteration of structure in any organ or tissue has been discovered. But in those cases where death has occurred at a later period, some lesions and slight changes in the appearance of some tissues have been traced. The more important of these, illustrative of the characteristic effects of the disease, are, in brief, the following: The follicular structure of the intestinal canal has been found slightly swollen, and the intestine partially filled with a turbid, inodorous, semi-diaphanous fluid, resembling thin starch, or rice-water, and is supposed to be the remains of that peculiar secretion which had taken place during life. This fluid is sometimes acid, and sometimes alkaline. In the small intestines it is found in an unmixed condition. It consists of two liquids of different consistency; the one thick, the other thin. The latter constitutes the rice-water stools, and may be passed off without admixture with the thicker substance. The colon has been found generally much contracted, and the mucous membrane and the sub-mucous cellular tissue of the digestive canal presenting evident marks of congestion, in some cases approaching to a sub-inflammatory state, generally in spots or patches of various sizes, the color of these varying from a very dark congestion to a more roseate hue. The glands of Brunner and Peyer, as well as the solitary glands, are greatly enlarged. The stomach and bowels are frequently of a paler color than natural, both in their inner and outer surfaces. The liver, the spleen, and the kidneys have been found engorged with blood. The urinary bladder is always contracted, and empty. The gall-ducts are sometimes contracted, at other times not. The vena porta and all the other abdominal veins are loaded with black blood, resembling tar in its color and consistency. The membranes of the brain and cord are generally found congested, and the substance of the brain more or less dotted with small points or specks of blood than usual. "The most common appearances in the lungs," says an eminent pathologist, "are the presence of blood in the large vessels, chiefly or solely; the collapse and the deficient crepitation arising from the more or less complete absence of air and blood, and from the approximation of the molecular parts of the pulmonary substance. In other cases there is more blood in the minute structure, a corresponding dark color of the lung, and a variable amount of frothy serum. The right side of the heart and the pulmonary arteries were generally filled, and in some cases distended with blood; the left side and aorta were generally empty, or contained only a very small quantity of dark blood; the left side evidently had received little or no blood, but had continued to contract, in some cases even violently, on the last drop of blood which had entered it."