_Head._ Arachnoid vascular; substance of brain and especially medulla oblongata highly vascular; between the arachnoid and the dura mater much limpid serum; all the ventricles distended with a similar fluid. _Thorax._ [Pleuræ adherent. Both lungs contained numerous tubercles in a state of suppuration. A large proportion of right lung hepatized.] _Abdomen._ Viscera healthy. CASE XXXVI. MARY SULLIVAN, æt. 26, married. Admitted on the 14th day of disease; pain of head severe from the beginning; continues unabated and even violent; no sleep; face pallid; expression depressed; pulse 81; abdomen tender; tongue foul and dry. V. S. ad ℥xij. 18th. Pain of head gone; delirium; pulse 70, soft; tongue more dry. 24th. Pain of head, which had returned slightly on some of the preceding days, was, from this period, finally lost in insensibility; no longer conscious; prostration; great restlessness; almost constant moaning; occasional retching; pulse 72. 26th. Continues perfectly insensible; all the stools passed in bed; pulse suddenly rose to 120, on the following day fell to 102; eyes half open and injected: no material change till 29th, died. _Head._ Membranes and substance of brain appeared pretty healthy; all the ventricles enlarged, and contained about three ounces of limpid serum; a considerable quantity, also, at base; some coagulable lymph effused on that part of the arachnoid which covers the tuber annulare. _Thorax._ [Pleuræ adherent; substance of lungs full of tubercles, in different stages of disease.] _Abdomen._ [Liver hard;] other viscera healthy. CASE XXXVII. ANN BOON, æt. 14, admitted on 10th day of fever. Attacked in the beginning with severe head-ache, which still continues; abdomen tender; lips and teeth sordid; tongue brown and dry; pulse 120. 11th. Pain of head undiminished; eyes heavy and suffused; delirium; tongue red, dry, and glazed; pulse 108. 13th. Pain of head quite gone; delirium; pulse 118. 19th. Much noise through the night; peevishness during the day; pulse 108. 20th. More insensible; can give no answer to any question; pulse 118. 22d. Constant rolling of the head; pupils dilated; all the stools passed in bed; pulse 108. 29th. Eyes vacant and staring; pupils contracted; head sunk in bed; legs drawn up; stools passed in bed; urine abundant; pulse 117, regular and of good power. 30th. Skin covered in several places with vesicles, which discharge a thin ichor. Died. _Head._ Membranes and substance of brain vascular; upwards of three ounces of serum in the ventricles and at base; much similar fluid in theca vertebralis. _Thorax._ Viscera healthy. _Abdomen._ Mesenteric glands greatly enlarged; some of them suppurating. CASE XXXVIII.