On the 11th day a remarkable change took place: for two or three hours he was chilly; to this succeeded heat of skin and flushing of the face; what was very alarming, the colour of the flash was purple, while that of the whole face was dusky; there was no cough, but the respiration was short and hurried; the mind was confused and dull, though a coherent answer might still be obtained to any question that was asked; the pulse now rose to 120, there was little or no sleep, but great restlessness during the night, in the course of which delirium appeared, and the next morning there came on muscular tremor. As the day advanced the flushing and heat disappeared; the mind became quite distinct, and the pulse fell to 96. Towards evening he again became restless, the pulse rose to 104, and about one o’clock, a.m. the increased heat, the flushing of the face, the purple colour of the cheek, the dusky appearance of the skin, the short and hurried respiration, and the convulsive action of the muscles all returned, and in a greater degree, while the pulse again rose to 120. From this state he never recovered in the least degree, but became more and more dull, and at length nearly insensible; his debility rapidly increased until it became extreme; he lay quite prostrate on the back, with his arms extended, as if lifeless; the muscular tremor increased; the respiration became extremely short and hurried; the tongue became dry, red, glazed, and sticky; the bowels torpid; the pulse 130; and with these symptoms he expired on the 13th day of fever. _Head._ Dura mater healthy; arachnoid thickened and opake; much gelatinous effusion between it and the pia mater; substance of brain highly vascular and firm; lateral ventricles distended with fluid, much also at the base. _Thorax._ Mucous membrane of bronchi universally of a dark red colour and lined with a tenacious fluid, which was slightly sticky; bronchial tubes filled with frothy mucus; substance of lungs perfectly healthy. _Abdomen._ Mucous membrane of small intestines generally inflamed; lower part of ilium and commencement of colon filled with large and raised ulcers, some of which were just forming, while others had penetrated through a thick mass of adventitious deposit to the muscular coat of the intestine. Before closing these illustrations of the pathology of fever, it may be proper to give an example of the modifications which take place when this disease proves fatal in the state of gestation. If fever attack during pregnancy, there is the greatest possible danger of miscarriage, and the great majority of those who miscarry die. There is no complication which requires a more delicate and cautious management; and the management which experience shews to be the best will be stated in the proper place: in the mean time, the following case is given as an illustration of the morbid appearances which are found (and the appearances are very uniform) when abortion is the precursor of death.