The stroma, of a fibrous character, of a dull, whitish, grayish, or pale-yellowish color, and great density, is so arranged as to form numerous alveoli of various sizes and shapes, communicating with each other. Within these cavities is contained the gelatinous or colloid material, which is a glistening, whitish, greenish, or yellowish color, and of the consistence of thin mucilage or ordinary jelly. In the older cells it becomes more firm and opaque. “In the main, it is perfectly structureless; within it, however, are imbedded a varying number of spherical cells, which also contain the same gelatinous substance. These cells present a peculiar appearance; they are large and spherical in shape, and are distended with drops of the same gelatinous material as that in which they are imbedded. Many of them display a lamellar surface, their boundary consisting of concentric lines.” (_e._) _Epithelioma._ Epithelioma, cancroid, or epithelial cancer, grows in connection with cutaneous and mucous surfaces. The cells, usually containing a single nucleus, resemble very closely those met with in the cutaneous surfaces, and in the mucous membrane of the mouth, only that they are larger, their average being about ¹⁄₇₀₀ of an inch. In shape they are either rounded, oval, angular, or elongated, according to the pressure to which, in their growth, they are subjected. They are closely packed together into nests, assuming a concentric arrangement, like the layers of an onion. Mixed up with the cells, especially if the growth have made much progress, are great numbers of free nuclei and granules, and sometimes also crystals of cholesterine, pigment cells and blood corpuscles. “The tumor itself is firm in consistence, more or less friable, and on section presents a grayish-white granular surface, intersected with lines of fibrous tissue. The cut surface yields on pressure, a small quantity of turbid fluid, and in most cases also a peculiar thick, crumbling, curdy material, can be expressed, which comes out in a worm-like shape, like the sebaceous matter from the glands of the skin.” The ulcer formed has a foul, fungating appearance, with irregular granulated edges, and a hard rough base. The disease is more common in men than women, and seldom occurs before the age of thirty-five or forty. It is most frequently met with in the lower lip, in the tongue, prepuce, scrotum, (“chimney-sweep’s cancer,”) labia, eyelids, cheeks, in the uterus and bladder. As it extends it may involve any tissue. CHAPTER IV. POST-MORTEM APPEARANCES IN DEATH FROM UNNATURAL CAUSES. 1. Death from Poisoning. In speaking of the lesions produced by poisoning, we will confine our attention to the more common poisonous substances which are given, or taken, either intentionally or by accident, and which may result in death.