ELIZABETH GASSET, æt. 32, married, admitted on the 8th day of fever. Attack commenced, in addition to the common symptoms, with violent pain of the bowels. Epigastre still extremely tender; tongue red, clean, moist; no stool for six days; no pain of head or chest; pulse 99. 9th. Tenderness of epigastrium continues; tongue red and dry; no stool; pulse 84; no cerebral nor pectoral symptoms. 10th. Died. _Head._ Membranes and substance of the brain highly vascular; no effusion. _Thorax._ Viscera healthy. _Abdomen._ [Eight inches of the jejunum intussuscepted within a portion of the same intestine of equal length; the farthest extremity of the intussuscepted part mortified; the mucous membrane of the containing portion highly vascular and in a state of ecchymosis; the intestinal canal, between the constricted portion and the stomach, contracted, and its valvulæ conniventes enlarged and œdematous; the size of the tube beyond the disease much diminished, and the colon, especially, contracted into a mere cord.] CASE XX. JOSEPH DANBURY, æt. 20, stone-cutter. Admitted on the 15th day of fever; pain of head, which has never been great, is now very slight; much vertigo; eyes sallow; no uneasiness in chest; some cough; abdomen tender; tongue brown; teeth sordid; much thirst; pulse 108. 26th. Since last report, pain of head never entirely absent; vertigo constant and distressing; pain in the right side of the head much increased to-day, while the vertigo is now gone; delirium; eyes suffused; tongue dry; pulse 120. 36th. The pain of the head and the giddiness have continued to alternate; both are now quite gone; mind confused and dull; expression of countenance wild; muscular tremor; respiration hurried. 37th. Died. _Head._ Pia mater vascular; substance of brain vascular; slight effusion between the membranes and into the ventricles. _Thorax._ No prominent disease. _Abdomen._ Peritoneal coat of intestines vascular; other viscera healthy. CASE XXI. EDWARD FORRESTER, æt. 46, cabinet-maker. Admitted on 6th day of fever. Complaint commenced with severe pain of back, loins, and epigastrium, with sense of ardent heat. At present, pain of head slight; that of epigastrium continues; tongue white, moist; no uneasiness of chest; pulse 90. 7th. Pain of head, limbs and epigastrium; tongue white, dry; pulse 96, full and strong. V.S. ad ℥xij. 8th. Pain of head gone; that of epigastrium diminished; pulse 110; blood not sizy. 10th. Pain of head returned; that of epigastrium diminished; no sleep; delirium; pulse 126. 12th. Pain of head again gone; delirium continues; pulse 110. 13th. No sleep; mind confused; delirium; subsultus tendinum. 15th. Cerebral symptoms undiminished; tongue dry and quite black; lips and teeth covered with black sordes.