Having treated of such feverish Distempers, as arise from an Inflammation of the Blood, I shall here treat of those produced by corrupt Humours, which stagnate in the Stomach, the Guts, or other Bowels of the lower Cavity, the Belly; or which have already passed from them into the Blood. These are called putrid Fevers, or sometimes bilious Fevers, when a certain Degeneracy or Corruption of the Bile seems chiefly to prevail in the Disease. Sec. 237. This Distemper frequently gives Notice of its Approach, several Days before its manifest Attack; by a great Dejection, a Heaviness of the Head; Pains of the Loins and Knees; a Foulness of the Mouth in the Morning; little Appetite; broken Slumber; and sometimes by an excessive Head-ach for many Days, without any other Symptom. After this, or these Disorders, a Shivering comes on, followed by a sharp and dry Heat: the Pulse, which was small and quick during the Shivering, is raised during the Heat, and is often very strong, though it is not attended with the same Hardness, as in the preceding Fever; except the putrid Fever be combined with an inflammatory one, which it sometimes is. During this Time, that is the Duration of the Heat, the Head-ach is commonly extremely violent; the Patient is almost constantly affected with Loathings, and sometimes even with Vomiting; with Thirst, disagreeable Risings, a Bitterness in the Mouth; and very little Urine. This Heat continues for many Hours, frequently the whole Night; it abates a little in the Morning, and the Pulse, though always feverish, is then something less so, while the Patient suffers less, though still greatly dejected. The Tongue is white and furred, the Teeth are foul, and the Breath smells very disagreeably. The Colour, Quantity and Consistence of the Urine, are very various and changeable. Some Patients are costive, others frequently have small Stools, without the least Relief accruing from them. The Skin is sometimes dry, and at other Times there is some sensible Perspiration, but without any Benefit attending it. The Fever augments every Day, and frequently at unexpected irregular Periods. Besides that _great_ Paroxysm or Increase, which is perceivable in all the Subjects of this Fever, some have also other _less_ intervening ones.