_Head._--The arachnoid thickened and opaque; there was very general congestion of pia mater with dark black blood, and when removed, convolutions studded over with innumerable dark points. The surface of the brain was apparently healthy, with an effusion of a light pink-like fluid into the lateral ventricles. The internal substance of the brain natural. This case is interesting, as showing the very rapid course, in some instances, of the disease to a fatal termination, and also how soon the strongest man can be brought under its destructive influence. This is the only case in which carbon was discovered in any of the other organs, as exhibited in the liver. The above case comes under the third division, showing extensive excavation of the pulmonary structure. CASE VII. James R. aged 54 at his death, 1836. He was a large muscular man, and wrought as a coal-miner in early life at Pencaitland, and, as far as could be ascertained, he had never been engaged at stone-mining. At the age of thirty he was obliged to desist work, on account of a difficulty in his breathing, which he considered to be asthma, and he was occupied above ground, as the engine-man, during the latter part of his life. The slightest exertion produced exhaustion and palpitation of the heart; his bowels were obstinate, and his urinary secretion small in quantity. His cough was particularly troublesome in the morning, and was relieved by a free expectoration of frothy mucus. In this condition he continued, with the cough gradually increasing, for nearly twenty years, as I understand, when he began to void black sputa, which daily augmented in quantity till his decease, August 1836. For some weeks previous to his death, his pulse had become slow and thready, 36 in the minute. The oedema of the upper and lower extremities was extensive; the dyspnoea increased considerably; the countenance was livid; and the body remarkably cold. Stimulants in considerable quantity were administered without the smallest effect. Drowsiness supervened; and he was for some days previous to dissolution in a torpid condition, while at the same time he was quite collected when roused.